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Table of Contents

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
___________________________________________
FORM 10-Q
______________________________________________________________________________________
☒ Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the quarterly period ended September 30, 2024
or
☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the transition period from _______ to _______
Commission File Number: 001-15811
_________________________________________
MARKEL GROUP INC.
(Exact name of registrant as specified in its charter)
___________________________________________________________________________________

Virginia |  | 54-1959284
(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)

4521 Highwoods Parkway, Glen Allen, Virginia 23060-6148
(Address of principal executive offices) (Zip Code)
(804) 747-0136
(Registrant's telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:

Title of each class |  | Trading Symbol(s) |  | Name of exchange on which registered
Common Stock, no par value |  | MKL |  | New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ☐
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes x No ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer | x | Accelerated filer | ☐ | Non-accelerated filer | ☐
Smaller reporting company | ☐ | Emerging growth company | ☐ |  |

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No x
Number of shares of the registrant's common stock outstanding at October 23, 2024: 12,862,300

Table of Contents
Markel Group Inc.
Form 10-Q
Index

|  | Page Number
PART I. FINANCIAL INFORMATION |
Item 1. | Financial Statements |
| Consolidated Balance Sheets—September 30, 2024 and December 31, 2023 | 3
| Consolidated Statements of Income and Comprehensive Income (Loss)—Quarters and Nine Months Ended September 30, 2024 and 2023 | 4
| Consolidated Statements of Changes in Equity—Quarters and Nine Months Ended September 30, 2024 and 2023 | 5
| Condensed Consolidated Statements of Cash Flows—Nine Months Ended Se ptember 30, 2024 and 2023 | 7
| Notes to Consolidated Financial Statements | 8
Item 2. | Management's Discussion and Analysis of Financial Condition and Results of Operations | 27
Item 3. | Quantitative and Qualitative Disclosures About Market Risk | 48
Item 4. | Controls and Procedures | 48
PART II. OTHER INFORMATION |
Item 1. | Legal Proceedings | 49
Item 2. | Unregistered Sales of Equity Securities and Use of Proceeds | 49
Item 5. | Other Information | 49
Item 6. | Exhibits | 50
Signatures | 52

2

Table of Contents
PART I. FINANCIAL INFORMATION
Item 1. Financial Statements
MARKEL GROUP INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS

| September 30, 2024 |  | December 31, 2023
(dollars in thousands) | (unaudited) |  |
ASSETS |  |  |
Investments, at estimated fair value: |  |  |
Fixed maturity securities, available-for-sale (amortized cost of $16,265,743 in 2024 and $14,932,286 in 2023) | $ | 16,067,848 |  |  | $ | 14,372,732 |
Equity securities (cost of $3,798,549 in 2024 and $3,497,071 in 2023) | 11,591,298 |  |  | 9,577,871 |
Short-term investments, available-for-sale (estimated fair value approximates cost) | 2,355,738 |  |  | 2,571,382 |
Total Investments | 30,014,884 |  |  | 26,521,985 |
Cash and cash equivalents | 3,873,041 |  |  | 3,747,060 |
Restricted cash and cash equivalents | 753,476 |  |  | 584,974 |
Receivables | 3,909,404 |  |  | 3,455,306 |
Reinsurance recoverables | 10,746,213 |  |  | 9,235,501 |
Deferred policy acquisition costs | 967,670 |  |  | 931,344 |
Prepaid reinsurance premiums | 3,413,314 |  |  | 2,365,243 |
Goodwill | 2,739,770 |  |  | 2,624,749 |
Intangible assets | 1,507,581 |  |  | 1,588,684 |
Other assets | 4,357,885 |  |  | 3,990,864 |
Total Assets | $ | 62,283,238 |  |  | $ | 55,045,710 |
LIABILITIES AND EQUITY |  |  |
Unpaid losses and loss adjustment expenses | $ | 25,877,478 |  |  | $ | 23,483,321 |
Life and annuity benefits | 623,445 |  |  | 649,054 |
Unearned premiums | 7,887,057 |  |  | 6,642,426 |
Payables to insurance and reinsurance companies | 1,448,951 |  |  | 1,037,722 |
Senior long-term debt and other debt (estimated fair value of $4,028,000 in 2024 and $3,353,000 in 2023) | 4,356,054 |  |  | 3,779,796 |
Other liabilities | 4,427,425 |  |  | 3,927,498 |
Total Liabilities | 44,620,410 |  |  | 39,519,817 |
Redeemable noncontrolling interests | 515,493 |  |  | 469,685 |
Commitments and contingencies |  |  |
Shareholders' equity: |  |  |
Preferred stock | 591,891 |  |  | 591,891 |
Common stock | 3,552,800 |  |  | 3,517,146 |
Retained earnings | 13,063,403 |  |  | 11,353,101 |
Accumulated other comprehensive loss | (193,855) |  |  | (478,210) |
Total Shareholders' Equity | 17,014,239 |  |  | 14,983,928 |
Noncontrolling interests | 133,096 |  |  | 72,280 |
Total Equity | 17,147,335 |  |  | 15,056,208 |
Total Liabilities and Equity | $ | 62,283,238 |  |  | $ | 55,045,710 |

See accompanying notes to consolidated financial statements.
3

Table of Contents
MARKEL GROUP INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (LOSS)
(Unaudited)

| Quarter Ended September 30, |  | Nine Months Ended September 30,
| 2024 |  | 2023 |  | 2024 |  | 2023
(dollars in thousands, except per share data) |  |  |  |  |  |  |
OPERATING REVENUES |  |  |  |  |  |  |
Earned premiums | $ | 2,110,108 |  |  | $ | 2,121,745 |  |  | $ | 6,314,834 |  |  | $ | 6,120,592 |
Net investment income | 235,477 |  |  | 192,207 |  |  | 676,807 |  |  | 521,235 |
Net investment gains (losses) | 917,530 |  |  | (265,917) |  |  | 1,689,794 |  |  | 591,173 |
Products revenues | 612,277 |  |  | 601,524 |  |  | 2,060,336 |  |  | 1,964,332 |
Services and other revenues | 735,872 |  |  | 725,627 |  |  | 2,037,991 |  |  | 1,963,779 |
Total Operating Revenues | 4,611,264 |  |  | 3,375,186 |  |  | 12,779,762 |  |  | 11,161,111 |
OPERATING EXPENSES |  |  |  |  |  |  |
Losses and loss adjustment expenses | 1,290,612 |  |  | 1,404,325 |  |  | 3,810,934 |  |  | 3,765,215 |
Underwriting, acquisition and insurance expenses | 743,556 |  |  | 698,129 |  |  | 2,192,603 |  |  | 2,071,721 |
Products expenses | 549,990 |  |  | 545,567 |  |  | 1,766,930 |  |  | 1,712,792 |
Services and other expenses | 609,321 |  |  | 606,810 |  |  | 1,757,222 |  |  | 1,678,246 |
Amortization of acquired intangible assets | 46,459 |  |  | 47,545 |  |  | 134,981 |  |  | 136,367 |
Total Operating Expenses | 3,239,938 |  |  | 3,302,376 |  |  | 9,662,670 |  |  | 9,364,341 |
Operating Income | 1,371,326 |  |  | 72,810 |  |  | 3,117,092 |  |  | 1,796,770 |
Interest expense | (53,361) |  |  | (44,553) |  |  | (151,506) |  |  | (141,212) |
Foreign exchange gains (losses) | (111,612) |  |  | 39,246 |  |  | (51,401) |  |  | (8,658) |
Income Before Income Taxes | 1,206,353 |  |  | 67,503 |  |  | 2,914,185 |  |  | 1,646,900 |
Income tax expense | (259,411) |  |  | (14,235) |  |  | (628,211) |  |  | (339,903) |
Net Income | 946,942 |  |  | 53,268 |  |  | 2,285,974 |  |  | 1,306,997 |
Net income attributable to noncontrolling interests | (41,983) |  |  | (10,677) |  |  | (88,130) |  |  | (80,243) |
Net Income to Shareholders | 904,959 |  |  | 42,591 |  |  | 2,197,844 |  |  | 1,226,754 |
Preferred stock dividends | — |  |  | — |  |  | (18,000) |  |  | (18,000) |
Net Income to Common Shareholders | $ | 904,959 |  |  | $ | 42,591 |  |  | $ | 2,179,844 |  |  | $ | 1,208,754 |
OTHER COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |
Change in net unrealized losses on available-for-sale investments, net of taxes: |  |  |  |  |  |  |
Net holding gains (losses) arising during the period | $ | 434,310 |  |  | $ | (187,330) |  |  | $ | 265,586 |  |  | $ | (161,115) |
Reclassification adjustments for net losses in net income | 254 |  |  | 22,869 |  |  | 17,406 |  |  | 26,268 |
Change in net unrealized losses on available-for-sale investments, net of taxes | 434,564 |  |  | (164,461) |  |  | 282,992 |  |  | (134,847) |
Change in discount rate for life and annuity benefits, net of taxes | (14,298) |  |  | 14,609 |  |  | (1,907) |  |  | 8,781 |
Change in foreign currency translation adjustments, net of taxes | 4,236 |  |  | (187) |  |  | 3,306 |  |  | 2,753 |
Change in net actuarial pension loss, net of taxes | 21 |  |  | 20 |  |  | 60 |  |  | 56 |
Total Other Comprehensive Income (Loss) | 424,523 |  |  | (150,019) |  |  | 284,451 |  |  | (123,257) |
Comprehensive Income (Loss) | 1,371,465 |  |  | (96,751) |  |  | 2,570,425 |  |  | 1,183,740 |
Comprehensive income attributable to noncontrolling interests | (42,007) |  |  | (10,749) |  |  | (88,226) |  |  | (80,326) |
Comprehensive Income (Loss) to Shareholders | $ | 1,329,458 |  |  | $ | (107,500) |  |  | $ | 2,482,199 |  |  | $ | 1,103,414 |
NET INCOME PER COMMON SHARE |  |  |  |  |  |  |
Basic | $ | 66.40 |  |  | $ | 3.15 |  |  | $ | 160.71 |  |  | $ | 90.86 |
Diluted | $ | 66.25 |  |  | $ | 3.14 |  |  | $ | 160.42 |  |  | $ | 90.69 |

See accompanying notes to consolidated financial statements.
4

Table of Contents
MARKEL GROUP INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
(Unaudited)

Quarter Ended September 30, 2024 | Preferred Stock |  | Common Stock |  | Retained Earnings |  | Accumulated Other Comprehensive Loss |  | Total Shareholders' Equity |  | Noncontrolling Interests |  | Total Equity |  | Redeemable Noncontrolling Interests
(dollars in thousands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
June 30, 2024 | $ | 591,891 |  |  | $ | 3,546,661 |  |  | $ | 12,329,827 |  |  | $ | (618,355) |  |  | $ | 15,850,024 |  |  | $ | 98,530 |  |  | $ | 15,948,554 |  |  | $ | 476,518 |
Net income |  |  |  |  | 904,959 |  |  | — |  |  | 904,959 |  |  | 32,566 |  |  | 937,525 |  |  | 9,417 |
Other comprehensive income |  |  |  |  | — |  |  | 424,499 |  |  | 424,499 |  |  | — |  |  | 424,499 |  |  | 24 |
Comprehensive income |  |  |  |  |  |  |  |  | 1,329,458 |  |  | 32,566 |  |  | 1,362,024 |  |  | 9,441 |
Repurchase of common stock | — |  |  | — |  |  | (128,897) |  |  | — |  |  | (128,897) |  |  | — |  |  | (128,897) |  |  | — |
Equity awards expensed | — |  |  | 7,164 |  |  | — |  |  | — |  |  | 7,164 |  |  | — |  |  | 7,164 |  |  | — |
Adjustment of redeemable noncontrolling interests | — |  |  | — |  |  | (42,565) |  |  | — |  |  | (42,565) |  |  | — |  |  | (42,565) |  |  | 42,565 |
Other | — |  |  | (1,025) |  |  | 79 |  |  | 1 |  |  | (945) |  |  | 2,000 |  |  | 1,055 |  |  | (13,031) |
September 30, 2024 | $ | 591,891 |  |  | $ | 3,552,800 |  |  | $ | 13,063,403 |  |  | $ | (193,855) |  |  | $ | 17,014,239 |  |  | $ | 133,096 |  |  | $ | 17,147,335 |  |  | $ | 515,493 |

Nine Months Ended September 30, 2024 | Preferred Stock |  | Common Stock |  | Retained Earnings |  | Accumulated Other Comprehensive Loss |  | Total Shareholders' Equity |  | Noncontrolling Interests |  | Total Equity |  | Redeemable Noncontrolling Interests
(dollars in thousands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2023 | $ | 591,891 |  |  | $ | 3,517,146 |  |  | $ | 11,353,101 |  |  | $ | (478,210) |  |  | $ | 14,983,928 |  |  | $ | 72,280 |  |  | $ | 15,056,208 |  |  | $ | 469,685 |
Net income |  |  |  |  | 2,197,844 |  |  | — |  |  | 2,197,844 |  |  | 55,993 |  |  | 2,253,837 |  |  | 32,137 |
Other comprehensive income |  |  |  |  | — |  |  | 284,355 |  |  | 284,355 |  |  | — |  |  | 284,355 |  |  | 96 |
Comprehensive income |  |  |  |  |  |  |  |  | 2,482,199 |  |  | 55,993 |  |  | 2,538,192 |  |  | 32,233 |
Repurchase of common stock | — |  |  | — |  |  | (389,089) |  |  | — |  |  | (389,089) |  |  | — |  |  | (389,089) |  |  | — |
Preferred stock dividends | — |  |  | — |  |  | (18,000) |  |  | — |  |  | (18,000) |  |  | — |  |  | (18,000) |  |  | — |
Equity awards expensed | — |  |  | 46,275 |  |  | — |  |  | — |  |  | 46,275 |  |  | — |  |  | 46,275 |  |  | — |
Adjustment of redeemable noncontrolling interests | — |  |  | — |  |  | (81,267) |  |  | — |  |  | (81,267) |  |  | — |  |  | (81,267) |  |  | 81,267 |
Purchase of noncontrolling interests | — |  |  | (9,596) |  |  | — |  |  | — |  |  | (9,596) |  |  | — |  |  | (9,596) |  |  | (36,896) |
Other | — |  |  | (1,025) |  |  | 814 |  |  | — |  |  | (211) |  |  | 4,823 |  |  | 4,612 |  |  | (30,796) |
September 30, 2024 | $ | 591,891 |  |  | $ | 3,552,800 |  |  | $ | 13,063,403 |  |  | $ | (193,855) |  |  | $ | 17,014,239 |  |  | $ | 133,096 |  |  | $ | 17,147,335 |  |  | $ | 515,493 |

See accompanying notes to consolidated financial statements.
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MARKEL GROUP INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
(Unaudited)

Quarter Ended September 30, 2023 | Preferred Stock |  | Common Stock |  | Retained Earnings |  | Accumulated Other Comprehensive Loss |  | Total Shareholders' Equity |  | Noncontrolling Interests |  | Total Equity |  | Redeemable Noncontrolling Interests
(dollars in thousands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
June 30, 2023 | $ | 591,891 |  |  | $ | 3,515,362 |  |  | $ | 10,818,989 |  |  | $ | (740,743) |  |  | $ | 14,185,499 |  |  | $ | 53,582 |  |  | $ | 14,239,081 |  |  | $ | 464,442 |
Net income |  |  |  |  | 42,591 |  |  | — |  |  | 42,591 |  |  | 2,502 |  |  | 45,093 |  |  | 8,175 |
Other comprehensive income (loss) |  |  |  |  | — |  |  | (150,091) |  |  | (150,091) |  |  | — |  |  | (150,091) |  |  | 72 |
Comprehensive income (loss) |  |  |  |  |  |  |  |  | (107,500) |  |  | 2,502 |  |  | (104,998) |  |  | 8,247 |
Repurchase of common stock | — |  |  | — |  |  | (82,432) |  |  | — |  |  | (82,432) |  |  | — |  |  | (82,432) |  |  | — |
Equity awards expensed | — |  |  | 4,949 |  |  | — |  |  | — |  |  | 4,949 |  |  | — |  |  | 4,949 |  |  | — |
Adjustment of redeemable noncontrolling interests | — |  |  | — |  |  | (628) |  |  | — |  |  | (628) |  |  | — |  |  | (628) |  |  | 628 |
Purchase of noncontrolling interest | — |  |  | (776) |  |  | — |  |  | — |  |  | (776) |  |  | — |  |  | (776) |  |  | 570 |
Other | — |  |  | (1) |  |  | 47 |  |  | 1 |  |  | 47 |  |  | — |  |  | 47 |  |  | (6,501) |
September 30, 2023 | $ | 591,891 |  |  | $ | 3,519,534 |  |  | $ | 10,778,567 |  |  | $ | (890,833) |  |  | $ | 13,999,159 |  |  | $ | 56,084 |  |  | $ | 14,055,243 |  |  | $ | 467,386 |

Nine Months Ended September 30, 2023 | Preferred Stock |  | Common Stock |  | Retained Earnings |  | Accumulated Other Comprehensive Loss |  | Total Shareholders' Equity |  | Noncontrolling Interests |  | Total Equity |  | Redeemable Noncontrolling Interests
(dollars in thousands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2022 | $ | 591,891 |  |  | $ | 3,493,893 |  |  | $ | 9,832,804 |  |  | $ | (767,494) |  |  | $ | 13,151,094 |  |  | $ | 62,791 |  |  | $ | 13,213,885 |  |  | $ | 523,154 |
Net income |  |  |  |  | 1,226,754 |  |  | — |  |  | 1,226,754 |  |  | 55,940 |  |  | 1,282,694 |  |  | 24,303 |
Other comprehensive income (loss) |  |  |  |  | — |  |  | (123,340) |  |  | (123,340) |  |  | — |  |  | (123,340) |  |  | 83 |
Comprehensive income |  |  |  |  |  |  |  |  | 1,103,414 |  |  | 55,940 |  |  | 1,159,354 |  |  | 24,386 |
Repurchase of common stock | — |  |  | — |  |  | (269,593) |  |  | — |  |  | (269,593) |  |  | — |  |  | (269,593) |  |  | — |
Preferred stock dividends | — |  |  | — |  |  | (18,000) |  |  | — |  |  | (18,000) |  |  | — |  |  | (18,000) |  |  | — |
Equity awards expensed | — |  |  | 31,477 |  |  | — |  |  | — |  |  | 31,477 |  |  | — |  |  | 31,477 |  |  | — |
Adjustment of redeemable noncontrolling interests | — |  |  | — |  |  | 7,087 |  |  | — |  |  | 7,087 |  |  | — |  |  | 7,087 |  |  | (7,087) |
Purchase of noncontrolling interest | — |  |  | (5,464) |  |  | — |  |  | — |  |  | (5,464) |  |  | — |  |  | (5,464) |  |  | (48,907) |
Redemption of Markel CATCo Re noncontrolling interests | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (62,646) |  |  | (62,646) |  |  | — |
Other | — |  |  | (372) |  |  | (485) |  |  | 1 |  |  | (856) |  |  | (1) |  |  | (857) |  |  | (24,160) |
September 30, 2023 | $ | 591,891 |  |  | $ | 3,519,534 |  |  | $ | 10,778,567 |  |  | $ | (890,833) |  |  | $ | 13,999,159 |  |  | $ | 56,084 |  |  | $ | 14,055,243 |  |  | $ | 467,386 |

See accompanying notes to consolidated financial statements.
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MARKEL GROUP INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited)

| Nine Months Ended September 30,
| 2024 |  | 2023
(dollars in thousands) |  |  |
OPERATING ACTIVITIES |  |  |
Net income | $ | 2,285,974 |  |  | $ | 1,306,997 |
Adjustments to reconcile net income to net cash provided by operating activities | (185,913) |  |  | 657,280 |
Net Cash Provided By Operating Activities | 2,100,061 |  |  | 1,964,277 |
INVESTING ACTIVITIES |  |  |
Proceeds from sales, maturities, calls and prepayments of fixed maturity securities | 1,623,112 |  |  | 1,359,948 |
Cost of fixed maturity securities purchased | (2,923,357) |  |  | (2,661,587) |
Proceeds from sales of equity securities | 117,006 |  |  | 179,665 |
Cost of equity securities purchased | (434,996) |  |  | (448,388) |
Net change in short-term investments | 305,207 |  |  | 487,839 |
Cost of other investments purchased | (204,338) |  |  | (159,591) |
Additions to property and equipment | (181,040) |  |  | (155,088) |
Acquisitions, net of cash acquired | (207,231) |  |  | (3,584) |
Proceeds from sales of subsidiaries, net | — |  |  | 41,302 |
Other | 21,276 |  |  | 16,851 |
Net Cash Used By Investing Activities | (1,884,361) |  |  | (1,342,633) |
FINANCING ACTIVITIES |  |  |
Additions to senior long-term debt and other debt | 1,278,485 |  |  | 475,964 |
Repayment of senior long-term debt and other debt | (716,543) |  |  | (811,857) |
Repurchases of common stock | (389,089) |  |  | (269,593) |
Dividends paid on preferred stock | (18,000) |  |  | (18,000) |
Redemption of Markel CATCo Re noncontrolling interests | — |  |  | (88,997) |
Purchase of noncontrolling interests | (46,492) |  |  | (54,371) |
Other | (42,629) |  |  | (32,434) |
Net Cash Provided (Used) By Financing Activities | 65,732 |  |  | (799,288) |
Effect of foreign currency rate changes on cash, cash equivalents, restricted cash and restricted cash equivalents | 13,051 |  |  | 993 |
Increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents | 294,483 |  |  | (176,651) |
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period | 4,332,034 |  |  | 5,221,513 |
CASH, CASH EQUIVALENTS, RESTRICTED CASH AND RESTRICTED CASH EQUIVALENTS AT END OF PERIOD | $ | 4,626,517 |  |  | $ | 5,044,862 |

See accompanying notes to consolidated financial statements.
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MARKEL GROUP INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
1. Summary of Significant Accounting Policies
Markel Group Inc. (Markel Group) is a holding company comprised of a diverse group of companies and investments with specialty insurance at its core. Through its wholly owned subsidiary, Markel Ventures, Inc. (Markel Ventures), Markel Group owns controlling interests in businesses that operate in a variety of industries. See note 2 for details regarding reportable segments.
a) Basis of Presentation. The consolidated balance sheet as of September 30, 2024 and the related consolidated statements of income and comprehensive income (loss) and changes in equity for the quarters and nine months ended September 30, 2024 and 2023, and the condensed consolidated statements of cash flows for the nine months ended September 30, 2024 and 2023 are unaudited. In the opinion of management, all adjustments necessary for fair presentation of such consolidated financial statements have been included. Such adjustments consist only of normal, recurring items. Interim results are not necessarily indicative of results of operations for the entire year. The consolidated balance sheet as of December 31, 2023 was derived from Markel Group's audited annual consolidated financial statements.
The accompanying consolidated financial statements have been prepared in accordance with United States (U.S.) generally accepted accounting principles (GAAP) and include the accounts of Markel Group and its consolidated subsidiaries, as well as variable interest entities (VIEs) that meet the requirements for consolidation (the Company). All significant intercompany balances and transactions have been eliminated in consolidation. The Company consolidates the results of its Markel Ventures subsidiaries on a one-month lag, with the exception of significant transactions or events that occur during the intervening period. Certain prior period amounts have been reclassified to conform to the current period presentation.
The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities. Actual results may differ materially from the estimates and assumptions used in preparing the consolidated financial statements.
The consolidated financial statements and notes are presented as permitted by Form 10-Q and do not contain certain information included in the Company's annual consolidated financial statements and notes. For a more complete description of the Company's business and accounting policies, readers are urged to review the Company's 2023 Annual Report on Form 10‑K.
b) Recent Accounting Pronouncements
Accounting Standards Not Yet Adopted
In November 2023, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The standard requires public companies to, among other things: (1) disclose, on an annual and interim basis, significant segment expenses that are regularly provided to the chief operating decision maker and included within each reported measure of segment profit or loss; (2) disclose, on an annual and interim basis, an amount for other segment expenses that are not separately disclosed as significant segment expenses and a description of its composition; (3) provide all annual disclosures about a reportable segment's profit or loss and assets currently required by Topic 280 in interim periods; and (4) disclose the title and position of the chief operating decision maker and an explanation of how the chief operating decision maker uses the reported measures of segment profit or loss in assessing segment performance and deciding how to allocate resources. ASU No. 2023-07 becomes effective for the Company in the fourth quarter of 2024 and will be applied using a retrospective approach that requires recasting of all prior periods presented. The standard only impacts required disclosures and will not impact the Company's financial position, results of operations or cash flows. The Company is still finalizing the impact of adopting ASU No. 2023-07 on its reportable segment disclosures, however, the ASU is not expected to result in significant changes to the Company's reportable segment disclosures.
In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The standard requires public companies, on an annual basis, to provide enhanced rate reconciliation disclosures, including disclosure of specific categories and additional information for reconciling items that meet a quantitative threshold. The standard also requires public companies to, among other things, disaggregate income taxes paid by federal, state and foreign taxes. ASU No. 2023-09 becomes effective for the Company's 2025 Annual Report on Form 10-K. The standard only impacts required disclosures and will not impact the Company's financial position, results of operations or cash flows.
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2. Segment Reporting Disclosures
The Company has four reportable segments: Insurance, Reinsurance, Investing and Markel Ventures.
The chief operating decision maker reviews the Company's ongoing underwriting operations on a global basis in the following two segments: Insurance and Reinsurance. The Insurance segment includes all direct business and facultative reinsurance placements written on a risk-bearing basis within the Company's underwriting operations. The Reinsurance segment includes all treaty reinsurance written on a risk-bearing basis within the Company's underwriting operations.
The Company's other insurance operations primarily consist of the results of the Company's program services and other fronting business and insurance-linked securities operations. Other insurance operations also include results for lines of business discontinued prior to, or in conjunction with, acquisitions, including development on asbestos and environmental loss reserves and results attributable to the run-off of life and annuity reinsurance business, which are monitored separately from the Company's ongoing underwriting operations. For purposes of segment reporting, none of these other insurance operations are considered to be reportable segments.
The Company's Investing segment includes all investing activities related to the Company's insurance operations, as well as investing activities at Markel Group. Invested assets managed through the Investing segment include the Company's portfolio of publicly traded fixed maturity and equity securities, as well as cash and short-term investments.
The Markel Ventures segment primarily consists of controlling interests in a diverse portfolio of businesses that operate in various industries. The Company's chief operating decision maker reviews and assesses Markel Ventures' performance in the aggregate, as a single operating segment.
Segment profit for all of the Company's segments is measured by operating income. Segment operating income excludes amortization of intangible assets arising from purchase accounting for acquisitions, which the chief operating decision maker does not consider in assessing the financial performance of, or allocating resources to, operating segments. Amortization of acquired intangible assets is considered a corporate expense because it is not a cost of operating the underlying businesses. For the Insurance and Reinsurance segments, segment operating income is typically consistent with underwriting profit, which the property and casualty insurance industry commonly defines as earned premiums net of losses and loss adjustment expenses and underwriting, acquisition and insurance expenses. Segment operating income for these two segments may also include other revenues and expenses that are not captured in underwriting profit.
Prior to 2024, the segment profitability metric for the Markel Ventures segment included amortization of acquired intangible assets. The new metric, as previously described, better aligns with how the chief operating decision maker reviews and assesses the performance of the Markel Ventures segment. Prior periods have been recast to conform to the current presentation. Management continues to evaluate the Company's segments as its business evolves and may further refine its segments and segment profitability metric.
For management reporting purposes, the Company allocates assets to its underwriting operations and to its Investing and Markel Ventures segments and certain of its other insurance operations, including its program services and other fronting business and insurance-linked securities business. Underwriting assets include assets attributed to the Company's Insurance and Reinsurance segments, discontinued underwriting lines of business, as well as assets that are not specifically allocated to the Company's other insurance operations. Generally, the Company manages its underwriting assets in the aggregate and therefore does not allocate assets to individual underwriting segments.
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a) The following tables summarize the Company's segment disclosures.

| Quarter Ended September 30, 2024
(dollars in thousands) | Insurance |  | Reinsurance |  | Investing |  | Markel Ventures |  | Other insurance operations |  | Corporate |  | Consolidated
Earned premiums | $ | 1,859,934 |  |  | $ | 250,680 |  |  | $ | — |  |  | $ | — |  |  | $ | (506) |  |  | $ | — |  |  | $ | 2,110,108 |
Net investment income | — |  |  | — |  |  | 233,384 |  |  | 2,093 |  |  | — |  |  | — |  |  | 235,477 |
Net investment gains | — |  |  | — |  |  | 917,530 |  |  | — |  |  | — |  |  | — |  |  | 917,530 |
Products revenues | — |  |  | — |  |  | — |  |  | 612,277 |  |  | — |  |  | — |  |  | 612,277 |
Services and other revenues | — |  |  | — |  |  | 14,971 |  |  | 645,251 |  |  | 75,650 |  |  | — |  |  | 735,872 |
Total operating revenues | 1,859,934 |  |  | 250,680 |  |  | 1,165,885 |  |  | 1,259,621 |  |  | 75,144 |  |  | — |  |  | 4,611,264 |
Losses and loss adjustment expenses: |  |  |  |  |  |  |  |  |  |  |  |  |
Current accident year | (1,215,469) |  |  | (198,057) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (1,413,526) |
Prior accident years | 130,431 |  |  | (7,937) |  |  | — |  |  | — |  |  | 420 |  |  | — |  |  | 122,914 |
Underwriting, acquisition and insurance expenses: |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of policy acquisition costs | (369,320) |  |  | (62,354) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (431,674) |
Other underwriting expenses | (295,992) |  |  | (15,863) |  |  | — |  |  | — |  |  | (27) |  |  | — |  |  | (311,882) |
Products expenses | — |  |  | — |  |  | — |  |  | (549,990) |  |  | — |  |  | — |  |  | (549,990) |
Services and other expenses | — |  |  | — |  |  | — |  |  | (603,004) |  |  | (6,317) |  |  | — |  |  | (609,321) |
Amortization of acquired intangible assets |  |  |  |  |  |  |  |  |  |  | (46,459) |  |  | (46,459) |
Operating income (loss) | $ | 109,584 |  |  | $ | (33,531) |  |  | $ | 1,165,885 |  |  | $ | 106,627 |  |  | $ | 69,220 |  |  | $ | (46,459) |  |  | $ | 1,371,326 |
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  | (53,361) |
Net foreign exchange losses |  |  |  |  |  |  |  |  |  |  |  |  | (111,612) |
Income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  | $ | 1,206,353 |

| Quarter Ended September 30, 2023
(dollars in thousands) | Insurance |  | Reinsurance |  | Investing |  | Markel Ventures |  | Other insurance operations |  | Corporate |  | Consolidated
Earned premiums | $ | 1,848,267 |  |  | $ | 274,161 |  |  | $ | — |  |  | $ | — |  |  | $ | (683) |  |  | $ | — |  |  | $ | 2,121,745 |
Net investment income | — |  |  | — |  |  | 191,015 |  |  | 1,192 |  |  | — |  |  | — |  |  | 192,207 |
Net investment losses | — |  |  | — |  |  | (265,917) |  |  | — |  |  | — |  |  | — |  |  | (265,917) |
Products revenues | — |  |  | — |  |  | — |  |  | 601,524 |  |  | — |  |  | — |  |  | 601,524 |
Services and other revenues | — |  |  | — |  |  | (5,033) |  |  | 644,053 |  |  | 86,607 |  |  | — |  |  | 725,627 |
Total operating revenues | 1,848,267 |  |  | 274,161 |  |  | (79,935) |  |  | 1,246,769 |  |  | 85,924 |  |  | — |  |  | 3,375,186 |
Losses and loss adjustment expenses: |  |  |  |  |  |  |  |  |  |  |  |  |
Current accident year | (1,258,864) |  |  | (176,007) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (1,434,871) |
Prior accident years | 55,374 |  |  | (23,262) |  |  | — |  |  | — |  |  | (1,566) |  |  | — |  |  | 30,546 |
Underwriting, acquisition and insurance expenses: |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of policy acquisition costs | (369,001) |  |  | (68,919) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (437,920) |
Other underwriting expenses | (250,684) |  |  | (11,785) |  |  | — |  |  | — |  |  | 2,260 |  |  | — |  |  | (260,209) |
Products expenses | — |  |  | — |  |  | — |  |  | (545,567) |  |  | — |  |  | — |  |  | (545,567) |
Services and other expenses | — |  |  | — |  |  | — |  |  | (570,782) |  |  | (36,028) |  |  | — |  |  | (606,810) |
Amortization of acquired intangible assets |  |  |  |  |  |  |  |  |  |  | (47,545) |  |  | (47,545) |
Operating income (loss) | $ | 25,092 |  |  | $ | (5,812) |  |  | $ | (79,935) |  |  | $ | 130,420 |  |  | $ | 50,590 |  |  | $ | (47,545) |  |  | $ | 72,810 |
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  | (44,553) |
Net foreign exchange gains |  |  |  |  |  |  |  |  |  |  |  |  | 39,246 |
Income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  | $ | 67,503 |

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| Nine Months Ended September 30, 2024
(dollars in thousands) | Insurance |  | Reinsurance |  | Investing |  | Markel Ventures |  | Other insurance operations |  | Corporate |  | Consolidated
Earned premiums | $ | 5,547,398 |  |  | $ | 768,649 |  |  | $ | — |  |  | $ | — |  |  | $ | (1,213) |  |  | $ | — |  |  | $ | 6,314,834 |
Net investment income | — |  |  | — |  |  | 671,042 |  |  | 5,765 |  |  | — |  |  | — |  |  | 676,807 |
Net investment gains | — |  |  | — |  |  | 1,689,794 |  |  | — |  |  | — |  |  | — |  |  | 1,689,794 |
Products revenues | — |  |  | — |  |  | — |  |  | 2,060,336 |  |  | — |  |  | — |  |  | 2,060,336 |
Services and other revenues | — |  |  | — |  |  | 45,174 |  |  | 1,787,907 |  |  | 204,910 |  |  | — |  |  | 2,037,991 |
Total operating revenues | 5,547,398 |  |  | 768,649 |  |  | 2,406,010 |  |  | 3,854,008 |  |  | 203,697 |  |  | — |  |  | 12,779,762 |
Losses and loss adjustment expenses: |  |  |  |  |  |  |  |  |  |  |  |  |
Current accident year | (3,608,979) |  |  | (546,167) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (4,155,146) |
Prior accident years | 374,215 |  |  | (13,749) |  |  | — |  |  | — |  |  | (16,254) |  |  | — |  |  | 344,212 |
Underwriting, acquisition and insurance expenses: |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of policy acquisition costs | (1,101,256) |  |  | (186,644) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (1,287,900) |
Other underwriting expenses | (861,305) |  |  | (42,289) |  |  | — |  |  | — |  |  | (1,109) |  |  | — |  |  | (904,703) |
Products expenses | — |  |  | — |  |  | — |  |  | (1,766,930) |  |  | — |  |  | — |  |  | (1,766,930) |
Services and other expenses | — |  |  | — |  |  | — |  |  | (1,699,038) |  |  | (58,184) |  |  | — |  |  | (1,757,222) |
Amortization of acquired intangible assets |  |  |  |  |  |  |  |  |  |  | (134,981) |  |  | (134,981) |
Operating income (loss) | $ | 350,073 |  |  | $ | (20,200) |  |  | $ | 2,406,010 |  |  | $ | 388,040 |  |  | $ | 128,150 |  |  | $ | (134,981) |  |  | $ | 3,117,092 |
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  | (151,506) |
Net foreign exchange losses |  |  |  |  |  |  |  |  |  |  |  |  | (51,401) |
Income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  | $ | 2,914,185 |

| Nine Months Ended September 30, 2023
(dollars in thousands) | Insurance |  | Reinsurance |  | Investing |  | Markel Ventures |  | Other insurance operations |  | Corporate |  | Consolidated
Earned premiums | $ | 5,322,377 |  |  | $ | 799,683 |  |  | $ | — |  |  | $ | — |  |  | $ | (1,468) |  |  | $ | — |  |  | $ | 6,120,592 |
Net investment income | — |  |  | — |  |  | 518,536 |  |  | 2,699 |  |  | — |  |  | — |  |  | 521,235 |
Net investment gains | — |  |  | — |  |  | 591,173 |  |  | — |  |  | — |  |  | — |  |  | 591,173 |
Products revenues | — |  |  | — |  |  | — |  |  | 1,964,332 |  |  | — |  |  | — |  |  | 1,964,332 |
Services and other revenues | — |  |  | — |  |  | (13,791) |  |  | 1,770,997 |  |  | 206,573 |  |  | — |  |  | 1,963,779 |
Total operating revenues | 5,322,377 |  |  | 799,683 |  |  | 1,095,918 |  |  | 3,738,028 |  |  | 205,105 |  |  | — |  |  | 11,161,111 |
Losses and loss adjustment expenses: |  |  |  |  |  |  |  |  |  |  |  |  |
Current accident year | (3,415,860) |  |  | (519,109) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (3,934,969) |
Prior accident years | 179,564 |  |  | (6,584) |  |  | — |  |  | — |  |  | (3,226) |  |  | — |  |  | 169,754 |
Underwriting, acquisition and insurance expenses: |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of policy acquisition costs | (1,096,500) |  |  | (202,271) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (1,298,771) |
Other underwriting expenses | (733,334) |  |  | (38,113) |  |  | — |  |  | — |  |  | (1,503) |  |  | — |  |  | (772,950) |
Products expenses | — |  |  | — |  |  | — |  |  | (1,712,792) |  |  | — |  |  | — |  |  | (1,712,792) |
Services and other expenses | — |  |  | — |  |  | — |  |  | (1,632,588) |  |  | (45,658) |  |  | — |  |  | (1,678,246) |
Amortization of acquired intangible assets |  |  |  |  |  |  |  |  |  |  | (136,367) |  |  | (136,367) |
Operating income | $ | 256,247 |  |  | $ | 33,606 |  |  | $ | 1,095,918 |  |  | $ | 392,648 |  |  | $ | 154,718 |  |  | $ | (136,367) |  |  | $ | 1,796,770 |
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  | (141,212) |
Net foreign exchange losses |  |  |  |  |  |  |  |  |  |  |  |  | (8,658) |
Income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  | $ | 1,646,900 |

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b) The following table reconciles segment assets to the Company's consolidated balance sheets.

(dollars in thousands) | September 30, 2024 |  | December 31, 2023
Segment assets: |  |  |
Investing | $ | 34,442,388 |  |  | $ | 30,542,282 |
Underwriting | 10,818,395 |  |  | 9,897,689 |
Markel Ventures | 5,881,520 |  |  | 5,519,542 |
Total segment assets | 51,142,303 |  |  | 45,959,513 |
Other insurance operations | 11,140,935 |  |  | 9,086,197 |
Total assets | $ | 62,283,238 |  |  | $ | 55,045,710 |

3. Acquisition
Valor Environmental
In June 2024, the Company acquired 98% of Valor Environmental (Valor), an environmental services company providing erosion control and related services to commercial development sites and homebuilders throughout the United States. The Company has the option to acquire the remaining equity interests and the remaining equity holders have the option to sell their interests to the Company in the future. Total consideration for the transaction was $156.4 million, all of which was cash. The purchase price was preliminarily allocated to the acquired assets and liabilities of Valor based on estimated fair value at the acquisition date. The Company recognized goodwill of $107.5 million and intangible assets of $49.0 million. Goodwill is primarily attributable to expected future earnings and cash flow potential of Valor, and it is not expected to be deductible for income tax purposes. Results attributable to Valor are included in the Company's Markel Ventures segment beginning in the third quarter of 2024.
The Company has not completed the process of determining the fair value of the assets acquired and liabilities assumed. As a result, the fair value recorded for these items is a provisional estimate and is subject to adjustment. Once completed, any adjustments resulting from the valuations may impact the individual amounts recorded for assets acquired and liabilities assumed, as well as the residual goodwill.
4. Investments
a) The following tables summarize the Company's available-for-sale investments. Agency mortgage-backed securities include securities issued by U.S. government-sponsored enterprises and U.S. government agencies. The net unrealized holding gains (losses) in the tables below are presented before taxes.

| September 30, 2024
(dollars in thousands) | Amortized Cost |  | Gross Unrealized Holding Gains |  | Gross Unrealized Holding Losses |  |  |  | Estimated Fair Value
Fixed maturity securities: |  |  |  |  |  |  |  |  |
U.S. Treasury securities | $ | 4,946,495 |  |  | $ | 79,659 |  |  | $ | (31,894) |  |  |  |  | $ | 4,994,260 |
U.S. government-sponsored enterprises | 1,420,858 |  |  | 19,757 |  |  | (65,452) |  |  |  |  | 1,375,163 |
Obligations of states, municipalities and political subdivisions | 4,003,008 |  |  | 36,672 |  |  | (129,328) |  |  |  |  | 3,910,352 |
Foreign governments, agencies and supranationals | 2,783,826 |  |  | 77,781 |  |  | (103,644) |  |  |  |  | 2,757,963 |
Agency mortgage-backed securities | 2,738,131 |  |  | 25,754 |  |  | (86,205) |  |  |  |  | 2,677,680 |
Non-agency mortgage-backed securities | 122,640 |  |  | — |  |  | (3,416) |  |  |  |  | 119,224 |
Corporate and university bonds | 250,785 |  |  | 230 |  |  | (17,809) |  |  |  |  | 233,206 |
Total fixed maturity securities | 16,265,743 |  |  | 239,853 |  |  | (437,748) |  |  |  |  | 16,067,848 |
Short-term investments | 2,351,758 |  |  | 4,070 |  |  | (90) |  |  |  |  | 2,355,738 |
Investments, available-for-sale | $ | 18,617,501 |  |  | $ | 243,923 |  |  | $ | (437,838) |  |  |  |  | $ | 18,423,586 |

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| December 31, 2023
(dollars in thousands) | Amortized Cost |  | Gross Unrealized Holding Gains |  | Gross Unrealized Holding Losses |  | Estimated Fair Value
Fixed maturity securities: |  |  |  |  |  |  |
U.S. Treasury securities | $ | 3,811,293 |  |  | $ | 35,824 |  |  | $ | (62,404) |  |  | $ | 3,784,713 |
U.S. government-sponsored enterprises | 1,225,426 |  |  | 7,292 |  |  | (89,904) |  |  | 1,142,814 |
Obligations of states, municipalities and political subdivisions | 4,196,096 |  |  | 14,787 |  |  | (181,578) |  |  | 4,029,305 |
Foreign governments, agencies and supranationals | 2,554,874 |  |  | 34,352 |  |  | (142,008) |  |  | 2,447,218 |
Agency mortgage-backed securities | 2,507,682 |  |  | 8,939 |  |  | (135,611) |  |  | 2,381,010 |
Non-agency mortgage-backed securities | 355,673 |  |  | — |  |  | (22,603) |  |  | 333,070 |
Corporate and university bonds | 281,242 |  |  | 141 |  |  | (26,781) |  |  | 254,602 |
Total fixed maturity securities | 14,932,286 |  |  | 101,335 |  |  | (660,889) |  |  | 14,372,732 |
Short-term investments | 2,564,620 |  |  | 7,155 |  |  | (393) |  |  | 2,571,382 |
Investments, available-for-sale | $ | 17,496,906 |  |  | $ | 108,490 |  |  | $ | (661,282) |  |  | $ | 16,944,114 |

b) The following tables summarize gross unrealized investment losses on available-for-sale investments by the length of time that securities have continuously been in an unrealized loss position.

| September 30, 2024
| Less than 12 months |  | 12 months or longer |  | Total
(dollars in thousands) | Estimated Fair Value |  | Gross Unrealized Holding Losses |  | Estimated Fair Value |  | Gross Unrealized Holding Losses |  | Estimated Fair Value |  | Gross Unrealized Holding Losses
Fixed maturity securities: |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities | $ | 52,587 |  |  | $ | (85) |  |  | $ | 1,420,909 |  |  | $ | (31,809) |  |  | $ | 1,473,496 |  |  | $ | (31,894) |
U.S. government-sponsored enterprises | 18,881 |  |  | (584) |  |  | 723,075 |  |  | (64,868) |  |  | 741,956 |  |  | (65,452) |
Obligations of states, municipalities and political subdivisions | 153,371 |  |  | (518) |  |  | 2,249,754 |  |  | (128,810) |  |  | 2,403,125 |  |  | (129,328) |
Foreign governments, agencies and supranationals | 16,767 |  |  | (57) |  |  | 1,316,288 |  |  | (103,587) |  |  | 1,333,055 |  |  | (103,644) |
Agency mortgage-backed securities | 53,196 |  |  | (412) |  |  | 1,818,419 |  |  | (85,793) |  |  | 1,871,615 |  |  | (86,205) |
Non-agency mortgage-backed securities | — |  |  | — |  |  | 119,224 |  |  | (3,416) |  |  | 119,224 |  |  | (3,416) |
Corporate and university bonds | 2,203 |  |  | (48) |  |  | 227,773 |  |  | (17,761) |  |  | 229,976 |  |  | (17,809) |
Total fixed maturity securities | 297,005 |  |  | (1,704) |  |  | 7,875,442 |  |  | (436,044) |  |  | 8,172,447 |  |  | (437,748) |
Short-term investments | 327,973 |  |  | (90) |  |  | — |  |  | — |  |  | 327,973 |  |  | (90) |
Total | $ | 624,978 |  |  | $ | (1,794) |  |  | $ | 7,875,442 |  |  | $ | (436,044) |  |  | $ | 8,500,420 |  |  | $ | (437,838) |

At September 30, 2024, the Company held 1,079 available-for-sale securities in an unrealized loss position with a total estimated fair value of $8.5 billion and gross unrealized losses of $437.8 million. Of these 1,079 securities, 1,032 securities had been in a continuous unrealized loss position for one year or longer and had a total estimated fair value of $7.9 billion and gross unrealized losses of $436.0 million.
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| December 31, 2023
| Less than 12 months |  | 12 months or longer |  | Total
(dollars in thousands) | Estimated Fair Value |  | Gross Unrealized Holding Losses |  | Estimated Fair Value |  | Gross Unrealized Holding Losses |  | Estimated Fair Value |  | Gross Unrealized Holding Losses
Fixed maturity securities: |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities | $ | 317,027 |  |  | $ | (2,147) |  |  | $ | 1,507,784 |  |  | $ | (60,257) |  |  | $ | 1,824,811 |  |  | $ | (62,404) |
U.S. government-sponsored enterprises | 145,143 |  |  | (2,134) |  |  | 723,537 |  |  | (87,770) |  |  | 868,680 |  |  | (89,904) |
Obligations of states, municipalities and political subdivisions | 679,124 |  |  | (3,881) |  |  | 2,332,281 |  |  | (177,697) |  |  | 3,011,405 |  |  | (181,578) |
Foreign governments, agencies and supranationals | 83,396 |  |  | (395) |  |  | 1,492,912 |  |  | (141,613) |  |  | 1,576,308 |  |  | (142,008) |
Agency mortgage-backed securities | 189,977 |  |  | (1,871) |  |  | 1,889,272 |  |  | (133,740) |  |  | 2,079,249 |  |  | (135,611) |
Non-agency mortgage-backed securities | — |  |  | — |  |  | 333,070 |  |  | (22,603) |  |  | 333,070 |  |  | (22,603) |
Corporate and university bonds | — |  |  | — |  |  | 236,205 |  |  | (26,781) |  |  | 236,205 |  |  | (26,781) |
Total fixed maturity securities | 1,414,667 |  |  | (10,428) |  |  | 8,515,061 |  |  | (650,461) |  |  | 9,929,728 |  |  | (660,889) |
Short-term investments | 52,601 |  |  | (393) |  |  | — |  |  | — |  |  | 52,601 |  |  | (393) |
Total | $ | 1,467,268 |  |  | $ | (10,821) |  |  | $ | 8,515,061 |  |  | $ | (650,461) |  |  | $ | 9,982,329 |  |  | $ | (661,282) |

At December 31, 2023, the Company held 1,386 available-for-sale securities in an unrealized loss position with a total estimated fair value of $10.0 billion and gross unrealized losses of $661.3 million. Of these 1,386 securities, 1,131 securities had been in a continuous unrealized loss position for one year or longer and had a total estimated fair value of $8.5 billion and gross unrealized losses of $650.5 million.
The Company completes a detailed analysis each quarter to assess whether the decline in the fair value of any investment below its cost basis is the result of a credit loss. All available-for-sale securities with unrealized losses are reviewed. The Company considers many factors in completing its quarterly review of securities with unrealized losses for credit-related impairment to determine whether a credit loss exists, including the extent to which fair value is below cost, the implied yield to maturity, rating downgrades of the security and whether or not the issuer has failed to make scheduled principal or interest payments. The Company also takes into consideration information about the financial condition of the issuer and industry factors that could negatively impact the issuer.
If the decline in fair value of an available-for-sale security below its amortized cost is considered to be the result of a credit loss, the Company compares the estimated present value of the cash flows expected to be collected to the amortized cost of the security. The extent to which the estimated present value of the cash flows expected to be collected is less than the amortized cost of the security represents the credit loss, which is recorded as an allowance and recognized in net income. The allowance is limited to the difference between the fair value and the amortized cost of the security. Any remaining decline in fair value represents the non-credit portion of the impairment, which is recognized in other comprehensive income. The Company did not have an allowance for credit losses for any available-for-sale securities as of September 30, 2024 or December 31, 2023. As of September 30, 2024 or December 31, 2023, gross unrealized losses on available-for-sale securities were the result of declines in the fair value of the investments due to increases in interest rates, which are expected to reverse as the securities mature, and foreign currency movements related to available-for-sale securities denominated in a foreign currency.
Quarterly, the Company also considers whether it intends to sell an available-for-sale security or if it is more likely than not that it will be required to sell a security before recovery of its amortized cost. In these instances, a decline in fair value is recognized in net income based on the fair value of the security at the time of assessment, resulting in a new cost basis for the security.
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c) The amortized cost and estimated fair value of fixed maturity securities at September 30, 2024 are shown below by contractual maturity.

(dollars in thousands) | Amortized Cost |  | Estimated Fair Value
Due in one year or less | $ | 1,486,434 |  |  | $ | 1,478,425 |
Due after one year through five years | 5,577,381 |  |  | 5,559,647 |
Due after five years through ten years | 4,992,655 |  |  | 4,971,587 |
Due after ten years | 1,348,502 |  |  | 1,261,285 |
| 13,404,972 |  |  | 13,270,944 |
Agency mortgage-backed securities | 2,738,131 |  |  | 2,677,680 |
Non-agency mortgage-backed securities | 122,640 |  |  | 119,224 |
Total fixed maturity securities | $ | 16,265,743 |  |  | $ | 16,067,848 |

d) The following table presents the components of net investment income.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | 2024 |  | 2023
Interest: |  |  |  |  |  |  |
Fixed maturity securities | $ | 131,424 |  |  | $ | 98,891 |  |  | $ | 372,089 |  |  | $ | 269,438 |
Short-term investments | 30,971 |  |  | 26,768 |  |  | 94,809 |  |  | 77,099 |
Cash and cash equivalents and restricted cash and cash equivalents | 41,220 |  |  | 39,473 |  |  | 122,840 |  |  | 102,565 |
Dividends on equity securities | 36,739 |  |  | 31,134 |  |  | 101,263 |  |  | 84,968 |
| 240,354 |  |  | 196,266 |  |  | 691,001 |  |  | 534,070 |
Investment expenses | (4,877) |  |  | (4,059) |  |  | (14,194) |  |  | (12,835) |
Net investment income | $ | 235,477 |  |  | $ | 192,207 |  |  | $ | 676,807 |  |  | $ | 521,235 |

e) The following table presents the components of net investment gains (losses) included in net income and the change in net unrealized losses included in other comprehensive income (loss). Gross realized investment gains and losses on fixed maturity securities, short-term investments and other investments were not material to the consolidated financial statements and are presented on a net basis in the following table.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | 2024 |  | 2023
Fixed maturity securities, short-term investments and other investments: |  |  |  |  |  |  |
Net realized investment gains (losses) | $ | 13,891 |  |  | $ | (36,093) |  |  | $ | (4,604) |  |  | $ | (38,159) |
Equity securities: |  |  |  |  |  |  |
Change in fair value of securities sold during the period | (6,652) |  |  | 2,683 |  |  | (11,263) |  |  | 16,706 |
Change in fair value of securities held at the end of the period | 910,291 |  |  | (232,507) |  |  | 1,705,661 |  |  | 612,626 |
Total change in fair value | 903,639 |  |  | (229,824) |  |  | 1,694,398 |  |  | 629,332 |
Net investment gains (losses) | $ | 917,530 |  |  | $ | (265,917) |  |  | $ | 1,689,794 |  |  | $ | 591,173 |
Change in net unrealized losses on available-for-sale investments included in other comprehensive income (loss): |  |  |  |  |  |  |
Fixed maturity securities | $ | 546,386 |  |  | $ | (208,598) |  |  | $ | 361,659 |  |  | $ | (167,411) |
Short-term investments | 4,858 |  |  | 193 |  |  | (2,782) |  |  | (3,195) |
Net increase (decrease) | $ | 551,244 |  |  | $ | (208,405) |  |  | $ | 358,877 |  |  | $ | (170,606) |

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5. Fair Value Measurements
FASB ASC 820, Fair Value Measurements and Disclosures, establishes a three-level hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). If the inputs used to measure the assets or liabilities fall within different levels of the hierarchy, the classification is based on the lowest level input that is significant to the fair value measurement of the asset or liability.
Classification of assets and liabilities within the hierarchy considers the markets in which the assets and liabilities are traded and the reliability and transparency of the assumptions used to determine fair value. The hierarchy requires the use of observable market data when available. The levels of the hierarchy are defined as follows:
•Level 1 – Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities traded in active markets.
•Level 2 – Inputs to the valuation methodology include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and market-corroborated inputs.
•Level 3 – Inputs to the valuation methodology are unobservable for the asset or liability and are significant to the fair value measurement.
In accordance with ASC 820, the Company determines fair value based on the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. In determining fair value, the Company uses various methods, including the market, income and cost approaches. The Company uses valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs. The following section describes the valuation methodologies used by the Company to measure assets and liabilities at fair value, including an indication of the level within the fair value hierarchy in which each asset or liability is generally classified.
Available-for-sale investments and equity securities. Available-for-sale investments and equity securities are recorded at fair value on a recurring basis. Available-for-sale investments include fixed maturity securities and short-term investments. Fair value is determined by the Company after considering various sources of information, including information provided by a third-party pricing service. The pricing service provides prices for substantially all of the Company's fixed maturity securities and equity securities. In determining fair value, the Company generally does not adjust the prices obtained from the pricing service. The Company obtains an understanding of the pricing service's valuation methodologies and related inputs, which include, but are not limited to, reported trades, benchmark yields, issuer spreads, bids, offers, duration, credit ratings, estimated cash flows and prepayment speeds. The Company validates prices provided by the pricing service by reviewing prices from other pricing sources and analyzing pricing data in certain instances.
The Company has evaluated the various types of securities in its investment portfolio to determine an appropriate fair value hierarchy level based upon trading activity and the observability of market inputs. Level 1 investments include those traded on an active exchange, such as the New York Stock Exchange. Level 2 investments include U.S. Treasury securities, U.S. government-sponsored enterprises, municipal bonds, foreign government, agency, and supranational bonds, mortgage-backed securities and corporate and university debt securities. Level 3 investments include the Company's investments in insurance-linked securities funds that are in run-off, which are not traded on an active exchange and are valued using unobservable inputs.
Fair value for available-for-sale investments and equity securities is measured based upon quoted prices in active markets, if available. Due to variations in trading volumes and the lack of quoted market prices, fixed maturity securities are classified as Level 2 investments. The fair value of fixed maturity securities is normally derived through recent reported trades for identical or similar securities, making adjustments through the reporting date based upon available market observable data previously described. If there are no recent reported trades, the fair value of fixed maturity securities may be derived through the use of matrix pricing or model processes, where future cash flow expectations are developed based upon collateral performance and discounted at an estimated market rate. Significant inputs used to determine the fair value of obligations of states, municipalities and political subdivisions, corporate and university bonds and obligations of foreign governments, agencies and supranationals include reported trades, benchmark yields, issuer spreads, bids, offers, credit information and estimated cash flows. Significant inputs used to determine the fair value of mortgage-backed securities include the type of underlying assets, benchmark yields, prepayment speeds, collateral information, tranche type and volatility, estimated cash flows, credit information, default rates, recovery rates, issuer spreads and the year of issue.
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Senior long-term debt and other debt. Senior long-term debt and other debt is carried at amortized cost with the estimated fair value disclosed on the consolidated balance sheets. Senior long-term debt and other debt is classified as Level 2 within the fair value hierarchy due to variations in trading volumes and the lack of quoted market prices. Fair value is generally derived through recent reported trades, making adjustments through the reporting date, if necessary, based upon available market observable data including U.S. Treasury securities and implied credit spreads. Significant inputs used to determine the fair value of senior long-term debt and other debt include reported trades, benchmark yields, issuer spreads, bids and offers.
The following tables present the balances of assets measured at fair value on a recurring basis by level within the fair value hierarchy.

| September 30, 2024
(dollars in thousands) | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |
Investments: |  |  |  |  |  |  |
Fixed maturity securities, available-for-sale: |  |  |  |  |  |  |
U.S. Treasury securities | $ | — |  |  | $ | 4,994,260 |  |  | $ | — |  |  | $ | 4,994,260 |
U.S. government-sponsored enterprises | — |  |  | 1,375,163 |  |  | — |  |  | 1,375,163 |
Obligations of states, municipalities and political subdivisions | — |  |  | 3,910,352 |  |  | — |  |  | 3,910,352 |
Foreign governments, agencies and supranationals | — |  |  | 2,757,963 |  |  | — |  |  | 2,757,963 |
Agency mortgage-backed securities | — |  |  | 2,677,680 |  |  | — |  |  | 2,677,680 |
Non-agency mortgage-backed securities | — |  |  | 119,224 |  |  | — |  |  | 119,224 |
Corporate and university bonds | — |  |  | 233,206 |  |  | — |  |  | 233,206 |
Total fixed maturity securities, available-for-sale | — |  |  | 16,067,848 |  |  | — |  |  | 16,067,848 |
Equity securities: |  |  |  |  |  |  |
Insurance, banks and other financial institutions | 4,657,047 |  |  | — |  |  | 1,333 |  |  | 4,658,380 |
Industrial, consumer and all other | 6,932,918 |  |  | — |  |  | — |  |  | 6,932,918 |
Total equity securities | 11,589,965 |  |  | — |  |  | 1,333 |  |  | 11,591,298 |
Short-term investments, available-for-sale | 2,214,054 |  |  | 141,684 |  |  | — |  |  | 2,355,738 |
Total investments | $ | 13,804,019 |  |  | $ | 16,209,532 |  |  | $ | 1,333 |  |  | $ | 30,014,884 |

| December 31, 2023
(dollars in thousands) | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |
Investments: |  |  |  |  |  |  |
Fixed maturity securities, available-for-sale: |  |  |  |  |  |  |
U.S. Treasury securities | $ | — |  |  | $ | 3,784,713 |  |  | $ | — |  |  | $ | 3,784,713 |
U.S. government-sponsored enterprises | — |  |  | 1,142,814 |  |  | — |  |  | 1,142,814 |
Obligations of states, municipalities and political subdivisions | — |  |  | 4,029,305 |  |  | — |  |  | 4,029,305 |
Foreign governments, agencies and supranationals | — |  |  | 2,447,218 |  |  | — |  |  | 2,447,218 |
Agency mortgage-backed securities | — |  |  | 2,381,010 |  |  | — |  |  | 2,381,010 |
Non-agency mortgage-backed securities | — |  |  | 333,070 |  |  | — |  |  | 333,070 |
Corporate and university bonds | — |  |  | 254,602 |  |  | — |  |  | 254,602 |
Total fixed maturity securities, available-for-sale | — |  |  | 14,372,732 |  |  | — |  |  | 14,372,732 |
Equity securities: |  |  |  |  |  |  |
Insurance, banks and other financial institutions | 3,694,375 |  |  | — |  |  | 994 |  |  | 3,695,369 |
Industrial, consumer and all other | 5,882,502 |  |  | — |  |  | — |  |  | 5,882,502 |
Total equity securities | 9,576,877 |  |  | — |  |  | 994 |  |  | 9,577,871 |
Short-term investments, available-for-sale | 2,402,099 |  |  | 169,283 |  |  | — |  |  | 2,571,382 |
Total investments | $ | 11,978,976 |  |  | $ | 14,542,015 |  |  | $ | 994 |  |  | $ | 26,521,985 |

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Except as disclosed in note 3, the Company did not have any assets or liabilities measured at fair value on a non-recurring basis during the nine months ended September 30, 2024 and 2023.
6. Equity Method Investments
The Company's equity method investments, which are included in other assets on the consolidated balance sheets, totaled $849.9 million and $605.9 million as of September 30, 2024 and December 31, 2023, respectively. The Company's proportionate share of earnings in its equity method investments was income of $9.8 million and $45.4 million for the quarter and nine months ended September 30, 2024, respectively, and income of $4.2 million and losses of $0.4 million for the quarter and nine months ended September 30, 2023, respectively.
Hagerty, Inc.
The Company's most significant equity method investment is an investment in Hagerty, Inc. (Hagerty), which is accounted for on a quarter lag. Hagerty is an automotive enthusiast brand offering integrated membership products and programs as well as a specialty insurance provider focused on the global automobile enthusiast market. The Company's ownership interest in Hagerty was 23% as of September 30, 2024 and December 31, 2023. The Company's investment is comprised of Class A common shares, which are listed for trading on the New York Stock Exchange, as well as Class V common shares, associated with the Company's original investment, which have special voting rights and can be converted on a one-for-one basis into Class A common shares. The Company accounts for its investment under the equity method as it is deemed to have the ability to exercise significant influence over Hagerty's operating and financial policies through a combination of its voting interest, its right to designate a board member and business it conducts with Hagerty. As of September 30, 2024 and December 31, 2023, the carrying value of the Company's investment in Hagerty was $260.8 million and $237.4 million, respectively.
As of September 30, 2024 and December 31, 2023, the estimated value of the Company's investment, based on the closing stock price of Hagerty's Class A common shares, was $793.3 million and $608.4 million, respectively. See note 13 for further details regarding related party transactions with Hagerty.
Other
In September 2024, the Company acquired a 68% ownership interest in an educational services company. Total consideration for the Company's investment was $167.7 million. The Company's investment is accounted for under the equity method, as the Company does not have control over the business due to certain regulatory approvals that are still pending. The Company's proportionate share of earnings attributed to its investment will be included in the Markel Ventures segment beginning in the fourth quarter of 2024.
7. Products, Services, and Other Revenues
The following tables present revenues from contracts with customers by type, all of which are included in products revenues and services and other revenues, along with a reconciliation to total products revenues and services and other revenues.

| Quarter Ended September 30,
| 2024 |  | 2023
(dollars in thousands) | Markel Ventures |  | Other |  | Total |  | Markel Ventures |  | Other |  | Total
Products | $ | 605,471 |  |  | $ | — |  |  | $ | 605,471 |  |  | $ | 585,707 |  |  | $ | — |  |  | $ | 585,707 |
Services | 611,062 |  |  | 2,241 |  |  | 613,303 |  |  | 595,459 |  |  | 2,904 |  |  | 598,363 |
Investment management | — |  |  | 25,858 |  |  | 25,858 |  |  | — |  |  | 44,204 |  |  | 44,204 |
Total revenues from contracts with customers | 1,216,533 |  |  | 28,099 |  |  | 1,244,632 |  |  | 1,181,166 |  |  | 47,108 |  |  | 1,228,274 |
Leasing revenues | 45,726 |  |  | — |  |  | 45,726 |  |  | 50,994 |  |  | — |  |  | 50,994 |
Program services and other fronting fees | — |  |  | 47,613 |  |  | 47,613 |  |  | — |  |  | 39,499 |  |  | 39,499 |
Equity method and other investments income (loss) | (6,294) |  |  | 14,971 |  |  | 8,677 |  |  | (21) |  |  | (5,033) |  |  | (5,054) |
Other | 1,563 |  |  | (62) |  |  | 1,501 |  |  | 13,438 |  |  | — |  |  | 13,438 |
Total | $ | 1,257,528 |  |  | $ | 90,621 |  |  | $ | 1,348,149 |  |  | $ | 1,245,577 |  |  | $ | 81,574 |  |  | $ | 1,327,151 |

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| Nine Months Ended September 30,
| 2024 |  | 2023
(dollars in thousands) | Markel Ventures |  | Other |  | Total |  | Markel Ventures |  | Other |  | Total
Products | $ | 2,040,699 |  |  | $ | — |  |  | $ | 2,040,699 |  |  | $ | 1,921,773 |  |  | $ | — |  |  | $ | 1,921,773 |
Services | 1,679,671 |  |  | 6,789 |  |  | 1,686,460 |  |  | 1,651,339 |  |  | 7,542 |  |  | 1,658,881 |
Investment management | — |  |  | 68,340 |  |  | 68,340 |  |  | — |  |  | 76,108 |  |  | 76,108 |
Total revenues from contracts with customers | 3,720,370 |  |  | 75,129 |  |  | 3,795,499 |  |  | 3,573,112 |  |  | 83,650 |  |  | 3,656,762 |
Leasing revenues | 123,514 |  |  | — |  |  | 123,514 |  |  | 130,051 |  |  | — |  |  | 130,051 |
Program services and other fronting fees | — |  |  | 129,861 |  |  | 129,861 |  |  | — |  |  | 105,952 |  |  | 105,952 |
Equity method and other investments income (loss) | 292 |  |  | 45,174 |  |  | 45,466 |  |  | 1,087 |  |  | (13,791) |  |  | (12,704) |
Disposition gain | — |  |  | — |  |  | — |  |  | — |  |  | 16,923 |  |  | 16,923 |
Other | 4,067 |  |  | (80) |  |  | 3,987 |  |  | 31,079 |  |  | 48 |  |  | 31,127 |
Total | $ | 3,848,243 |  |  | $ | 250,084 |  |  | $ | 4,098,327 |  |  | $ | 3,735,329 |  |  | $ | 192,782 |  |  | $ | 3,928,111 |

In June 2023, the Company sold one of its licensed insurance subsidiaries, which resulted in a gain of $16.9 million. The gain was included in services and other revenues.
Receivables from contracts with customers were $615.8 million and $616.4 million as of September 30, 2024 and December 31, 2023, respectively.
8. Unpaid Losses and Loss Adjustment Expenses
The following table presents a reconciliation of consolidated beginning and ending reserves for losses and loss adjustment expenses.

| Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023
Gross reserves for losses and loss adjustment expenses, beginning of year | $ | 23,483,321 |  |  | $ | 20,947,898 |
Reinsurance recoverables on unpaid losses, beginning of year | 8,820,567 |  |  | 7,994,884 |
Net reserves for losses and loss adjustment expenses, beginning of year | 14,662,754 |  |  | 12,953,014 |
Effect of foreign currency rate changes on beginning of year balance | 45,503 |  |  | 16,246 |
Adjusted net reserves for losses and loss adjustment expenses, beginning of year | 14,708,257 |  |  | 12,969,260 |
Incurred losses and loss adjustment expenses: |  |  |
Current accident year | 4,155,146 |  |  | 3,934,969 |
Prior accident years | (344,212) |  |  | (169,754) |
Total incurred losses and loss adjustment expenses | 3,810,934 |  |  | 3,765,215 |
Payments: |  |  |
Current accident year | 444,221 |  |  | 419,998 |
Prior accident years | 2,415,104 |  |  | 2,018,199 |
Total payments | 2,859,325 |  |  | 2,438,197 |
Effect of foreign currency rate changes on current year activity | 1,861 |  |  | 416 |
Change in net reserves for losses and loss adjustment expenses of Markel CATCo Re (see note 12) | (78,091) |  |  | (146,895) |
Reinsurance recoverable for retroactive reinsurance transaction | — |  |  | (125,067) |
Net reserves for losses and loss adjustment expenses, end of period | 15,583,636 |  |  | 14,024,732 |
Reinsurance recoverables on unpaid losses | 10,293,842 |  |  | 8,119,634 |
Gross reserves for losses and loss adjustment expenses, end of period | $ | 25,877,478 |  |  | $ | 22,144,366 |

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For the nine months ended September 30, 2024, current accident year losses and loss adjustment expenses included $62.0 million of net losses and loss adjustment expenses attributed to Hurricane Helene. The net losses and loss adjustment expenses attributed to Hurricane Helene as of September 30, 2024 represent the Company's best estimate based upon information currently available. Due to limited claims activity, the estimate for these losses is based on preliminary industry loss estimates and output from industry, broker and proprietary models, as well as policy level reviews and analysis of ceded reinsurance contracts. This estimate is based on various assumptions about coverage and liability and is therefore subject to change. While the Company believes its net reserves for Hurricane Helene as of September 30, 2024 are adequate, it continues to closely monitor reported claims and may adjust the estimate of net losses as new information becomes available.
For the nine months ended September 30, 2024, prior accident years losses and loss adjustment expenses included $344.2 million of favorable development on prior years loss reserves. Favorable development in 2024 was most significant on the Insurance segment's international professional liability product lines, as well as its general liability, property and credit and surety product lines, totaling $322.1 million across these product lines.
In July 2024, the Company, through its program services operations, entered into a retroactive reinsurance contract on behalf of a third-party capacity provider under which it assumed a layer of loss reserves for a portfolio of casualty policies that were concurrently ceded to the third-party capacity provider. As a result of these transactions, the Company recorded $302.6 million of gross losses and loss adjustment expenses and $302.6 million of corresponding reinsurance recoverables. The transactions had no impact on the Company's net reserves for losses and loss adjustment expenses.
For the nine months ended September 30, 2023, current accident year losses and loss adjustment expenses included $46.2 million of net losses and loss adjustment expenses attributed to the Hawaiian wildfires and Hurricane Idalia.
For the nine months ended September 30, 2023, prior accident years losses and loss adjustment expenses included $169.8 million of favorable development on prior years loss reserves. Favorable development in 2023 was most significant on the Insurance segment's international professional liability product lines, as well as its property, marine and energy, workers' compensation and personal lines product lines and on the Reinsurance segment's professional liability and property product lines, totaling $276.6 million across these product lines. This favorable development was partially offset by $70.5 million of adverse development on the Insurance segment's general liability product lines and $60.9 million of adverse development on the Reinsurance segment's public entity and general liability product lines.
In March 2023, the Company completed a retroactive reinsurance transaction to cede its portfolio of policies comprised of liabilities for its run-off book of United Kingdom motor casualty business in exchange for payments totaling $125.1 million, which approximated the carrying value of the Company's reserves for losses and loss adjustment expenses on the ceded policies.
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9. Reinsurance
The following tables summarize the effect of reinsurance and retrocessional reinsurance on premiums written and earned.

| Quarter Ended September 30,
| 2024 |  | 2023
(dollars in thousands) | Direct |  | Assumed |  | Ceded |  | Net Premiums |  | Direct |  | Assumed |  | Ceded |  | Net Premiums
Underwriting: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Written | $ | 2,249,500 |  |  | $ | 282,089 |  |  | $ | (549,264) |  |  | $ | 1,982,325 |  |  | $ | 2,223,988 |  |  | $ | 282,070 |  |  | $ | (478,035) |  |  | $ | 2,028,023 |
Earned | $ | 2,206,453 |  |  | $ | 404,686 |  |  | $ | (500,842) |  |  | $ | 2,110,297 |  |  | $ | 2,127,244 |  |  | $ | 424,620 |  |  | $ | (429,901) |  |  | $ | 2,121,963 |
Program services and other fronting: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Written | 763,082 |  |  | 177,038 |  |  | (940,309) |  |  | (189) |  |  | 615,424 |  |  | 557,324 |  |  | (1,172,966) |  |  | (218) |
Earned | 721,786 |  |  | 530,688 |  |  | (1,252,663) |  |  | (189) |  |  | 669,544 |  |  | 313,079 |  |  | (982,841) |  |  | (218) |
Consolidated: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Written | $ | 3,012,582 |  |  | $ | 459,127 |  |  | $ | (1,489,573) |  |  | $ | 1,982,136 |  |  | $ | 2,839,412 |  |  | $ | 839,394 |  |  | $ | (1,651,001) |  |  | $ | 2,027,805 |
Earned | $ | 2,928,239 |  |  | $ | 935,374 |  |  | $ | (1,753,505) |  |  | $ | 2,110,108 |  |  | $ | 2,796,788 |  |  | $ | 737,699 |  |  | $ | (1,412,742) |  |  | $ | 2,121,745 |

| Nine Months Ended September 30,
| 2024 |  | 2023
(dollars in thousands) | Direct |  | Assumed |  | Ceded |  | Net Premiums |  | Direct |  | Assumed |  | Ceded |  | Net Premiums
Underwriting: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Written | $ | 6,713,503 |  |  | $ | 1,515,639 |  |  | $ | (1,735,668) |  |  | $ | 6,493,474 |  |  | $ | 6,479,090 |  |  | $ | 1,419,802 |  |  | $ | (1,444,626) |  |  | $ | 6,454,266 |
Earned | $ | 6,554,464 |  |  | $ | 1,212,116 |  |  | $ | (1,451,224) |  |  | $ | 6,315,356 |  |  | $ | 6,124,444 |  |  | $ | 1,247,743 |  |  | $ | (1,250,605) |  |  | $ | 6,121,582 |
Program services and other fronting: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Written | 2,451,180 |  |  | 1,443,916 |  |  | (3,895,618) |  |  | (522) |  |  | 2,012,806 |  |  | 991,305 |  |  | (3,005,101) |  |  | (990) |
Earned | 2,236,845 |  |  | 894,803 |  |  | (3,132,170) |  |  | (522) |  |  | 1,960,219 |  |  | 546,871 |  |  | (2,508,080) |  |  | (990) |
Consolidated: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Written | $ | 9,164,683 |  |  | $ | 2,959,555 |  |  | $ | (5,631,286) |  |  | $ | 6,492,952 |  |  | $ | 8,491,896 |  |  | $ | 2,411,107 |  |  | $ | (4,449,727) |  |  | $ | 6,453,276 |
Earned | $ | 8,791,309 |  |  | $ | 2,106,919 |  |  | $ | (4,583,394) |  |  | $ | 6,314,834 |  |  | $ | 8,084,663 |  |  | $ | 1,794,614 |  |  | $ | (3,758,685) |  |  | $ | 6,120,592 |

Substantially all of the premiums written and earned in the Company's program services and other fronting operations for the quarter and nine months ended September 30, 2024 and 2023 were ceded. The percentage of consolidated ceded earned premiums to gross earned premiums was 45% and 42% for the quarter and nine months ended September 30, 2024, respectively, and 40% and 38% for the quarter and nine months ended September 30, 2023, respectively. The percentage of consolidated assumed earned premiums to net earned premiums was 44% and 33% for the quarter and nine months ended September 30, 2024, respectively, and 35% and 29% for the quarter and nine months ended September 30, 2023, respectively.
Substantially all of the incurred losses and loss adjustment expenses in the Company's program services and other fronting operations were ceded. These gross losses totaled $975.0 million and $2.2 billion for the quarter and nine months ended September 30, 2024, respectively, and $743.8 million and $1.8 billion for the quarter and nine months ended September 30, 2023, respectively.
The following table summarizes the effect of reinsurance and retrocessional reinsurance on losses and loss adjustment expenses in the Company's underwriting operations.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | 2024 |  | 2023
Gross losses and loss adjustment expenses | $ | 1,710,637 |  |  | $ | 1,684,389 |  |  | $ | 4,982,304 |  |  | $ | 4,552,926 |
Ceded losses and loss adjustment expenses | (419,194) |  |  | (278,945) |  |  | (1,170,585) |  |  | (786,876) |
Net losses and loss adjustment expenses | $ | 1,291,443 |  |  | $ | 1,405,444 |  |  | $ | 3,811,719 |  |  | $ | 3,766,050 |

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10. Life and Annuity Benefits
The Company's run-off block of life and annuity reinsurance contracts consists primarily of Euro and U.S. Dollar denominated life-contingent payout annuities and traditional and universal life contracts. The following table presents the components of the Company's liabilities for life and annuity benefits.

(dollars in thousands) | September 30, 2024 |  | December 31, 2023
Liability for future policyholder benefits | $ | 533,395 |  |  | $ | 557,763 |
Deferred profit liability | 54,856 |  |  | 52,287 |
Other | 35,194 |  |  | 39,004 |
Total | $ | 623,445 |  |  | $ | 649,054 |

The primary component of the Company's liabilities for life and annuity benefits is the liability for future policyholder benefits. Life and annuity benefit reserves are calculated for aggregated cohorts of contracts, which are determined based on the attributes of the underlying contracts, and are discounted using standard actuarial techniques and cash flow models. Since the development of the life and annuity reinsurance reserves is based upon cash flow projection models, the Company makes estimates and assumptions based on cedent experience and industry mortality tables. The cash flow assumptions used to determine the Company's life and annuity benefit reserves are reviewed, and updated as necessary, at least annually. The discount rate assumptions are updated at each reporting date. There were no changes to the cash flow assumptions used to measure the Company's life and annuity benefit reserves as a result of the annual review of cash flow assumptions completed in the third quarter of 2024 and 2023. The following table presents a rollforward of the present value of the liability for future policyholder benefits.

| Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023
Liability for future policyholder benefits, beginning of year | $ | 557,763 |  |  | $ | 554,366 |
Liability for future policyholder benefits at original discount rate, beginning of year | 642,877 |  |  | 667,761 |
Effect of changes in cash flow assumptions | — |  |  | — |
Effect of actual variances from expected experience | (4,745) |  |  | (5,890) |
Adjusted liability for future policyholder benefits, beginning of year | 638,132 |  |  | 661,871 |
Interest accretion | 10,596 |  |  | 11,251 |
Benefit payments | (37,083) |  |  | (39,819) |
Effect of foreign currency rate changes | 4,450 |  |  | (356) |
Liability for future policyholder benefits at original discount rate, end of period | 616,095 |  |  | 632,947 |
Cumulative effect of changes in discount rate assumptions | (82,700) |  |  | (124,511) |
Liability for future policyholder benefits, end of period (1) | $ | 533,395 |  |  | $ | 508,436 |

(1) The undiscounted liability for future policyholder benefits was $787.6 million and $813.6 million as of September 30, 2024 and 2023, respectively.
The following table summarizes additional details for the Company's liability for future policyholder benefits.

| September 30, 2024 |  | December 31, 2023
Weighted-average interest rate: |  |  |
Interest accretion rate | 2.3 | % |  | 2.3 | %
Current discount rate | 3.8 | % |  | 3.8 | %
Weighted-average liability duration | 8.4 years |  | 8.6 years

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11. Senior Long-Term Debt and Other Debt
In May 2024, the Company issued $600 million of 6.0% unsecured senior notes due May 2054. Net proceeds to the Company were $592.6 million, before expenses. The Company intends to use these proceeds for general corporate purposes, which may include the redemption, in whole or in part, of the Company's outstanding preferred shares. As of September 30, 2024, the Company had 600,000 preferred shares issued and outstanding, which the Company has the option to redeem, in whole or in part, on June 1, 2025, at $1,000 per preferred share, plus accrued and unpaid dividends.
12. Variable Interest Entities
Markel CATCo Investment Management Ltd. (MCIM), a wholly owned consolidated subsidiary of the Company, is an insurance-linked securities investment fund manager and reinsurance manager headquartered in Bermuda. Results attributable to MCIM are not included in a reportable segment.
MCIM serves as the insurance manager for Markel CATCo Re Ltd. (Markel CATCo Re), a Bermuda Class 3 reinsurance company, and as the investment manager for Markel CATCo Reinsurance Fund Ltd., a Bermuda exempted mutual fund company comprised of multiple segregated accounts (Markel CATCo Funds). Voting shares in Markel CATCo Reinsurance Fund Ltd. and Markel CATCo Re are held by MCIM, which has the power to direct the activities that most significantly impact the economic performance of these entities. The Markel CATCo Funds issued multiple classes of nonvoting, redeemable preference shares to investors, and the Markel CATCo Funds are primarily invested in nonvoting preference shares of Markel CATCo Re. The underwriting results of Markel CATCo Re are attributed to investors through its nonvoting preference shares. Both Markel CATCo Re and the Markel CATCo Funds were placed into run-off in July 2019.
In 2022, the Company completed a buy-out transaction with Markel CATCo Re and the Markel CATCo Funds that provided for an accelerated return of all remaining capital to investors in the Markel CATCo Funds. Under the terms of the transaction, the Company provided cash funding of $45.1 million to purchase substantially all of the Markel CATCo Funds' interests in Markel CATCo Re. As part of the transaction, substantially all of the preference shares held by investors in the Markel CATCo Funds were redeemed, including preference shares previously held by the Company.
The Company has received a return of $24.9 million of the initial cash funding provided, and the related preference shares were redeemed. As of September 30, 2024 and December 31, 2023, the Company's investment in the remaining preference shares of Markel CATCo Re totaled $20.1 million, which comprised 13% and 23%, respectively, of the equity of Markel CATCo Re. Through that investment, the Company has exposure to adverse loss development on reinsurance contracts previously written by Markel CATCo Re for loss events that occurred from 2014 to 2020. If loss reserves held by Markel CATCo Re are sufficient to settle claims on the remaining open contracts, the Company will receive a full return of the remaining $20.1 million in capital. Favorable development on loss reserves held by Markel CATCo Re, less operating expenses, will be distributed to the Markel CATCo Funds, and ultimately to investors in the Markel CATCo Funds.
Markel CATCo Re is considered a VIE, as the equity at risk does not have the right to receive residual returns that exceed the capital provided by the Company in the buy-out transaction. As a result of the preference shares acquired by the Company in the buy-out transaction, and the voting shares held by its consolidated subsidiary, MCIM, the Company consolidates Markel CATCo Re as its primary beneficiary. Results attributed to the run-off of Markel CATCo Re are reported with the Company's other insurance operations, within services and other revenues and expenses, and are not included in a reportable segment. Favorable loss reserve development on the run-off of reinsurance contracts written by Markel CATCo Re was $33.4 million and $57.5 million for the quarter and nine months ended September 30, 2024, respectively, and $2.2 million and $55.7 million for the quarter and nine months ended September 30, 2023, respectively. For all periods, the favorable development was included in services and other expenses and attributable to noncontrolling interests. During the nine months ended September 30, 2023, $62.6 million of preference shares of Markel CATCo Re held by noncontrolling interests were redeemed.
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The Company's consolidated balance sheets include the following amounts attributable to Markel CATCo Re.

(dollars in thousands) | September 30, 2024 |  | December 31, 2023
Assets |  |  |
Cash and cash equivalents | $ | 125,700 |  |  | $ | 91,301 |
Restricted cash and cash equivalents | 123,431 |  |  | 173,800 |
Other assets and receivables due from cedents | 16,327 |  |  | 19,292 |
Total Assets | $ | 265,458 |  |  | $ | 284,393 |
Liabilities and Equity |  |  |
Unpaid losses and loss adjustment expenses | $ | 106,876 |  |  | $ | 184,967 |
Other liabilities | 1,076 |  |  | 1,842 |
Total Liabilities | 107,952 |  |  | 186,809 |
Shareholders' equity | 21,139 |  |  | 21,139 |
Noncontrolling interests | 136,367 |  |  | 76,445 |
Total Equity | 157,506 |  |  | 97,584 |
Total Liabilities and Equity | $ | 265,458 |  |  | $ | 284,393 |

In connection with the buy-out transaction, the Company also entered into a tail risk cover with Markel CATCo Re to allow for the release of collateral to investors. Through this contract, the Company has $95.0 million of uncollateralized exposure to adverse development on loss reserves held by Markel CATCo Re for loss exposures in excess of limits that the Company believes are unlikely to be exceeded.
13. Related Party Transactions
The Company engages in certain related party transactions in the normal course of business at arm's length.
Insurance-Linked Securities
Within the Company's insurance-linked securities operations, the Company provides investment and insurance management services through Nephila Holdings Ltd. (together with its subsidiaries, Nephila). Nephila serves as the investment manager to several Bermuda based private funds (the Nephila Funds). To provide access for the Nephila Funds to a variety of insurance-linked securities in the property catastrophe, climate and specialty markets, Nephila also acts as an insurance manager to certain Bermuda Class 3 and 3A reinsurance companies, Lloyd's Syndicate 2357 and Lloyd's Syndicate 2358 (collectively, the Nephila Reinsurers). The Nephila Funds and Nephila Reinsurers are not included in the Company's consolidated financial statements. Nephila receives management fees for investment and insurance management services provided to the Nephila Funds and the Nephila Reinsurers through its insurance-linked securities operations, and, for certain funds, incentive fees based on their annual performance. For the quarter and nine months ended September 30, 2024, total revenues attributed to unconsolidated entities managed by Nephila were $25.1 million and $66.2 million, respectively. For the quarter and nine months ended September 30, 2023, total revenues attributed to unconsolidated entities managed by Nephila were $43.6 million and $74.1 million, respectively.
Program Services and Other Fronting
Through the Company's program services and other fronting operations, the Company has programs with Nephila through which the Company writes insurance policies that are fully ceded to the Nephila Reinsurers. Through these programs, Nephila utilizes certain of the Company's licensed insurance companies to write a portion of its portfolio of U.S. catastrophe-exposed property and specialty risks that is then ceded to the Nephila Reinsurers. Gross premiums written through the Company's program services and other fronting platforms that were ceded to the Nephila Reinsurers were $94.3 million and $1.2 billion for the quarter and nine months ended September 30, 2024, respectively, and $501.8 million and $1.0 billion for the quarter and nine months ended September 30, 2023, respectively.
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As of September 30, 2024 and December 31, 2023, reinsurance recoverables on the consolidated balance sheets included $711.5 million and $794.3 million, respectively, due from the Nephila Reinsurers. Under its programs with the Nephila Reinsurers, the Company bears underwriting risk for annual aggregate agreement year losses in excess of a limit the Company believes is unlikely to be exceeded. To the extent losses under these programs exceed the prescribed limits, the Company is obligated to pay such losses to the cedents without recourse to the Nephila Reinsurers. While the Company believes losses under these programs are unlikely, those losses, if incurred, could be material to the Company's consolidated results of operations and financial condition.
Beginning in 2024, in order for the Nephila Reinsurers to obtain reinsurance protection for a portion of their exposures, the Company also fronted ceded reinsurance contracts, primarily in the form of industry loss warranties, for the Nephila Reinsurers. Through this arrangement, the underlying risk of the Nephila Reinsurers was retroceded back to the Company and then fully ceded to third-party reinsurers. For the nine months ended September 30, 2024, the Company's gross written premiums from the Nephila Reinsurers under this program were $168.0 million, all of which were ceded to third parties.
The Company has also entered into other assumed and ceded reinsurance transactions with the Nephila Reinsurers in the normal course of business, which are not material to the Company's consolidated financial statements.
Hagerty
The Company holds a minority ownership interest in Hagerty, which operates primarily as a managing general agent and also includes Hagerty Reinsurance Limited (Hagerty Re), a Bermuda Class 3 reinsurance company. Through the Company's underwriting operations, the Company underwrites insurance for Hagerty, a portion of which is ceded to Hagerty Re. The amounts attributed to these arrangements are summarized in the following table.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | 2024 |  | 2023
Gross written premiums attributable to Hagerty | $ | 253,071 |  |  | $ | 227,693 |  |  | $ | 726,995 |  |  | $ | 628,889 |
Premiums ceded to Hagerty Re | $ | 193,844 |  |  | $ | 174,455 |  |  | $ | 557,581 |  |  | $ | 480,924 |

As of September 30, 2024 and December 31, 2023, reinsurance recoverables on the consolidated balance sheets included $264.2 million and $214.8 million, respectively, due from Hagerty Re.
14. Shareholders' Equity
a) The Company has 50,000,000 shares of no par value common stock authorized. The following table presents a rollforward of changes in common shares issued and outstanding.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(shares in ones) | 2024 |  | 2023 |  | 2024 |  | 2023
Issued and outstanding common shares, beginning of period | 12,962,032 |  |  | 13,284,998 |  |  | 13,131,672 |  |  | 13,422,692 |
Issuance of common shares | 5,324 |  |  | 3,007 |  |  | 9,311 |  |  | 5,475 |
Repurchase of common shares | (80,379) |  |  | (56,483) |  |  | (254,006) |  |  | (196,645) |
Issued and outstanding common shares, end of period | 12,886,977 |  |  | 13,231,522 |  |  | 12,886,977 |  |  | 13,231,522 |

b) The Company also has 10,000,000 shares of no par value preferred stock authorized, of which 600,000 shares were issued and outstanding at September 30, 2024 and December 31, 2023. The Company declared and paid dividends on preferred shares of $18.0 million, or $30 per share, in the second quarters of both 2024 and 2023.
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c) Net income per common share was determined by dividing adjusted net income to common shareholders by the applicable weighted average common shares outstanding. Basic common shares outstanding include restricted stock units that are no longer subject to any contingencies for issuance, but for which corresponding shares have not been issued. Diluted net income per common share is computed by dividing adjusted net income to common shareholders by the weighted average number of common shares and dilutive potential common shares outstanding during the period. The following table presents basic net income per common share and diluted net income per common share.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(in thousands, except per share amounts) | 2024 |  | 2023 |  | 2024 |  | 2023
Net income to common shareholders | $ | 904,959 |  |  | $ | 42,591 |  |  | $ | 2,179,844 |  |  | $ | 1,208,754 |
Adjustment of redeemable noncontrolling interests | (42,565) |  |  | (628) |  |  | (81,267) |  |  | 7,087 |
Adjusted net income to common shareholders | $ | 862,394 |  |  | $ | 41,963 |  |  | $ | 2,098,577 |  |  | $ | 1,215,841 |
Basic common shares outstanding | 12,987 |  |  | 13,315 |  |  | 13,058 |  |  | 13,382 |
Dilutive potential common shares from restricted stock units and restricted stock | 30 |  |  | 30 |  |  | 24 |  |  | 24 |
Diluted common shares outstanding | 13,017 |  |  | 13,345 |  |  | 13,082 |  |  | 13,406 |
Basic net income per common share | $ | 66.40 |  |  | $ | 3.15 |  |  | $ | 160.71 |  |  | $ | 90.86 |
Diluted net income per common share | $ | 66.25 |  |  | $ | 3.14 |  |  | $ | 160.42 |  |  | $ | 90.69 |

15. Contingencies
Contingencies arise in the normal course of the Company's operations and are not expected to have a material impact on the Company's financial condition or results of operations.
16. Subsequent Event
In October 2024, Hurricane Milton made landfall in Florida. Based on information currently available, the Company estimates its range of net losses and loss adjustment expenses from this event to be between $40 million and $80 million, before income taxes. This estimated range of losses was derived based on preliminary industry loss estimates and a high-level review of in-force contracts, as well as an analysis of ceded reinsurance contracts. The Company will refine its estimate of net losses, which will be recorded in the fourth quarter of 2024, as more details about the event and actual level of claims emerge.
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Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations
The following discussion and analysis should be read in conjunction with the consolidated financial statements and related notes included under Item 1 Financial Statements and our 2023 Annual Report on Form 10-K. The accompanying consolidated financial statements and related notes have been prepared in accordance with United States (U.S.) generally accepted accounting principles (GAAP) and include the accounts of our holding company, Markel Group Inc. (Markel Group), and its consolidated subsidiaries, as well as any variable interest entities that meet the requirements for consolidation. This section is divided into the following sections:
•Our Business
•Results of Operations
•Financial Condition
•Critical Accounting Estimates
•Safe Harbor and Cautionary Statement
Our Business
Markel Group is a holding company comprised of a diverse family of businesses and investments. The leadership teams of our businesses operate with a high degree of independence, while at the same time living the values that we call the Markel Style. Our specialty insurance business, Markel, sits at the core of our company. Through decades of sound underwriting, Markel has provided the capital base from which we built a system of businesses and investments that collectively increase Markel Group's durability and adaptability. We aspire to build one of the world's great companies by creating win-win-win outcomes for our customers, associates and shareholders. We deploy three financial engines in pursuit of this goal.
Insurance - markets and underwrites specialty insurance products using our underwriting, fronting and insurance-linked securities platforms that enable us to best match risk and capital
Investments - invests premiums received by our underwriting operations and any available earnings provided by our operating businesses in fixed maturity and equity securities
Markel Ventures - owns controlling interests in a diverse portfolio of businesses that operate in a variety of industries
Our three interdependent engines form a system that provides diverse income streams, access to a wide range of investment opportunities and the ability to efficiently move capital to the best ideas across our three engines. We allocate capital using a process that we have consistently followed for years. We first look to invest in our existing businesses for organic growth opportunities. After funding internal growth opportunities, we look to acquire controlling interests in businesses, build our portfolio of equity securities or repurchase shares of our common stock. We believe our system is uniquely equipped for long-term growth. To mitigate the effects of short-term volatility and align with the long-term perspective that we apply to operating our businesses and making investments, we generally use five-year time periods to measure our performance. We measure financial success using both operating income and total shareholder return. Operating income provides a reasonable proxy for the performance of each engine in support of our overall financial goal of growing intrinsic value. Prior to 2024, we used growth in book value per share, rather than operating income, to measure our performance. As our businesses diversified beyond underwriting operations, book value became less indicative of intrinsic value because a significant portion of our operations is not recorded at fair value. We believe total operating income across the Markel Group system is a better measure of our performance.
Insurance
Our insurance engine is comprised of the following types of operations:
•Underwriting - our risk-bearing insurance and reinsurance operations.
•Program services and other fronting - fronting platform that provides other insurance entities and capacity providers access to the property and casualty insurance market.
•Insurance-linked securities (ILS) - provides investment management services to third-party capital providers for a variety of insurance-related investment products.
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Through our underwriting, program services and other fronting and ILS operations, we have a suite of capabilities through which we can access capital to support our customers' risks, which includes our own capital through our underwriting operations, as well as third-party capital through our program services and other fronting and ILS operations. Within each of these insurance platforms, we believe that our specialty product focus enables us to develop expertise and specialized market knowledge. We seek to differentiate ourselves from competitors by our expertise, service, continuity and other value-based considerations, including the multiple platforms through which we can manage risk and deploy capital. For example, through our program services and other fronting platform, we have programs through which we write insurance policies on behalf of our ILS operations that are supported by third-party capital. Additionally, we cede certain risks historically written through our underwriting operations to our ILS operations to the extent those risks are more aligned with the risk profile of our ILS investors than our own corporate tolerance. Our ability to access multiple insurance platforms allows us to achieve income streams from our insurance operations beyond the traditional underwriting model. We believe this multi-platform approach provides us with a unique advantage through which we have the ability to unlock additional value for our customers and business partners, which we refer to as "the power of the platform."
Underwriting
We monitor and assess the performance of our ongoing underwriting operations on a global basis in the following two segments: Insurance and Reinsurance. In determining how to allocate resources and assess the performance of our underwriting results, we consider many factors, including the nature of the insurance product sold, the type of account written and the type of customer served. The Insurance segment includes all direct business and facultative reinsurance placements written on a risk-bearing basis within our underwriting operations. The Reinsurance segment includes all treaty reinsurance written on a risk-bearing basis within our underwriting operations.
Our Insurance segment includes unique and hard-to-place risks written on a global basis. In the U.S., this includes business written on an excess and surplus lines basis and an admitted basis. The following products are included in this segment: general liability, professional liability, personal lines, marine and energy, primary and excess of loss property, workers' compensation, credit and surety coverages, specialty program insurance for well-defined markets and liability and other coverages tailored for unique exposures. Business in this segment is primarily written through our Markel Specialty and Markel International divisions.
Our Reinsurance segment includes casualty and specialty treaty reinsurance products offered to other insurance and reinsurance companies. We write quota share and excess of loss reinsurance on a local, national and global basis. Business in this segment is primarily written by our Global Reinsurance division. Principal lines of business include: general liability, professional liability, credit and surety, marine and energy and workers' compensation.
Program Services and Other Fronting
Our program services and other fronting business generates fee income in the form of ceding fees in exchange for fronting insurance and reinsurance business for other insurance carriers, including the Nephila Reinsurers, as defined below. Our program services business, which is provided through our State National division, and our other fronting business are managed separately from our underwriting operations. The results of our program services and other fronting operations are not included in a reportable segment.
Although we reinsure substantially all of the risks inherent in our program services and other fronting businesses, we have certain programs that contain limits on our reinsurers' obligations to us that expose us to underwriting risk, including loss ratio caps, aggregate reinsurance limits or exclusion of the credit risk of producers. Under certain programs, including programs and contracts with the Nephila Reinsurers, we also bear underwriting risk for annual aggregate agreement year losses in excess of a limit that we believe is unlikely to be exceeded. See note 13 of the notes to consolidated financial statements for further details regarding our programs with the Nephila Reinsurers.
Insurance-Linked Securities
Our insurance-linked securities operations are primarily comprised of our Nephila operations and are not included in a reportable segment. Nephila Holdings Ltd. (together with its subsidiaries, Nephila) provides investment and insurance management services through which we offer alternative capital to the insurance and reinsurance market while providing investors with investment strategies that typically are uncorrelated with traditional asset classes. We receive management fees for investment and insurance management services provided through these operations, and for certain funds, incentive fees based on their annual performance.
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Nephila serves as the investment manager to several Bermuda-based private funds (the Nephila Funds). To provide access for the Nephila Funds to a variety of insurance-linked securities, Nephila acts as an insurance manager to certain Bermuda Class 3, collateralized and special purpose reinsurance companies, Lloyd's Syndicate 2357 and Lloyd's Syndicate 2358 (collectively, the Nephila Reinsurers). The results of the Nephila Reinsurers are attributed to the Nephila Funds primarily through derivative transactions between these entities. Neither the Nephila Funds nor the Nephila Reinsurers are subsidiaries of Markel Group, and as such, these entities are not included in our consolidated financial statements.
The Nephila Reinsurers subscribe to various property, climate, and specialty reinsurance contracts based on their investors' risk profiles, including business ceded by our program services and other fronting platforms. See note 13 of the notes to consolidated financial statements for further details regarding transactions with entities managed through our Nephila operations.
Investments
Our investment operations manage the capital held within our underwriting operations, as well as capital allocated by Markel Group, and are reported as the Investing segment. Invested assets managed through our investment operations include our portfolio of publicly traded fixed maturity and equity securities, as well as cash and short-term investments. Substantially all of our investment portfolio is managed by company employees.
Our underwriting operations provide our investment operations with steady inflows of premiums. These funds are invested predominantly in high-quality government and municipal bonds and mortgage-backed securities that generally match the duration and currency of our loss reserves. We typically hold these investments until maturity. As a result, unrealized holding gains and losses on these securities are generally expected to reverse as the securities mature. Premiums collected through our underwriting operations may also be held as short-term investments or cash and cash equivalents to provide short-term liquidity for projected claims payments, reinsurance costs and operating expenses.
Our investments in equity securities are predominantly held within our regulated insurance subsidiaries to support capital requirements. Capital held by our insurance subsidiaries beyond that which we anticipate will be needed to cover claims payments and operating expenses is available to be invested in equity securities, along with additional capital allocated for investment purposes by Markel Group. We allocate a higher percentage of capital to equity securities than most other insurance companies. Over the long run, equity securities have produced higher returns relative to fixed maturity securities and short-term investments. When purchasing equity securities, we seek to invest in profitable companies with high returns on capital and low debt, with honest and talented management and significant reinvestment opportunities and capital discipline, all while paying reasonable prices for those securities. We intend to hold these equity investments over the long-term.
Markel Ventures
Through our wholly owned subsidiary, Markel Ventures, Inc. (Markel Ventures), we own controlling interests in high-quality businesses that operate in a variety of different industries with shared values and the shared goal of positively contributing to the long-term financial performance of Markel Group. Management teams for each business operate autonomously and are responsible for developing strategic initiatives, managing day-to-day operations and making investment and capital allocation decisions for their respective companies. Our Markel Ventures management team is responsible for decisions regarding allocation of capital for acquisitions and new investments. Our strategy in making these acquisitions is similar to our strategy for purchasing equity securities. We seek to invest in profitable companies, with honest and talented management, that exhibit reinvestment opportunities and capital discipline, at reasonable prices. We intend to own the businesses acquired for a long period of time.
We allocate resources to and assess the performance of these various businesses in the aggregate as the Markel Ventures segment. The following types of businesses are included in this segment: construction services, consumer and building products, transportation-related products, equipment manufacturing products and consulting services. These businesses offer various types of products and services to businesses and consumers across many markets. All of our businesses in this segment are headquartered in the U.S., with subsidiaries of certain businesses located outside of the U.S.
In June 2024, we acquired 98% of Valor Environmental (Valor), an environmental services company providing erosion control and related services to commercial development sites and homebuilders throughout the United States. Results attributable to Valor are included in our Markel Ventures segment. See note 3 of the notes to consolidated financial statements for additional details related to this acquisition. Additionally, our Markel Ventures businesses make strategic acquisitions from time to time that impact the results of the Markel Ventures segment but are not material to Markel Group.
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Results of Operations
The following table presents the components of operating revenues.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | 2024 |  | 2023
Insurance segment | $ | 1,859,934 |  |  | $ | 1,848,267 |  |  | $ | 5,547,398 |  |  | $ | 5,322,377 |
Reinsurance segment | 250,680 |  |  | 274,161 |  |  | 768,649 |  |  | 799,683 |
Other insurance operations | 75,144 |  |  | 85,924 |  |  | 203,697 |  |  | 205,105 |
Insurance operations | 2,185,758 |  |  | 2,208,352 |  |  | 6,519,744 |  |  | 6,327,165 |
Net investment income | 233,384 |  |  | 191,015 |  |  | 671,042 |  |  | 518,536 |
Net investment gains (losses) | 917,530 |  |  | (265,917) |  |  | 1,689,794 |  |  | 591,173 |
Other | 14,971 |  |  | (5,033) |  |  | 45,174 |  |  | (13,791) |
Investing segment | 1,165,885 |  |  | (79,935) |  |  | 2,406,010 |  |  | 1,095,918 |
Markel Ventures segment | 1,259,621 |  |  | 1,246,769 |  |  | 3,854,008 |  |  | 3,738,028 |
Total operating revenues | $ | 4,611,264 |  |  | $ | 3,375,186 |  |  | $ | 12,779,762 |  |  | $ | 11,161,111 |

The following table presents the components of operating income and comprehensive income (loss) to shareholders.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | 2024 |  | 2023
Operating income: |  |  |  |  |  |  |
Insurance segment | $ | 109,584 |  |  | $ | 25,092 |  |  | $ | 350,073 |  |  | $ | 256,247 |
Reinsurance segment | (33,531) |  |  | (5,812) |  |  | (20,200) |  |  | 33,606 |
Other insurance operations | 69,220 |  |  | 50,590 |  |  | 128,150 |  |  | 154,718 |
Insurance operations | 145,273 |  |  | 69,870 |  |  | 458,023 |  |  | 444,571 |
Investing segment | 1,165,885 |  |  | (79,935) |  |  | 2,406,010 |  |  | 1,095,918 |
Markel Ventures segment | 106,627 |  |  | 130,420 |  |  | 388,040 |  |  | 392,648 |
Amortization of acquired intangible assets | (46,459) |  |  | (47,545) |  |  | (134,981) |  |  | (136,367) |
Operating income | 1,371,326 |  |  | 72,810 |  |  | 3,117,092 |  |  | 1,796,770 |
Interest expense | (53,361) |  |  | (44,553) |  |  | (151,506) |  |  | (141,212) |
Net foreign exchange gains (losses) | (111,612) |  |  | 39,246 |  |  | (51,401) |  |  | (8,658) |
Income tax expense | (259,411) |  |  | (14,235) |  |  | (628,211) |  |  | (339,903) |
Net income attributable to noncontrolling interests | (41,983) |  |  | (10,677) |  |  | (88,130) |  |  | (80,243) |
Net income to shareholders | 904,959 |  |  | 42,591 |  |  | 2,197,844 |  |  | 1,226,754 |
Preferred stock dividends | — |  |  | — |  |  | (18,000) |  |  | (18,000) |
Net income to common shareholders | 904,959 |  |  | 42,591 |  |  | 2,179,844 |  |  | 1,208,754 |
Other comprehensive income (loss) to shareholders | 424,499 |  |  | (150,091) |  |  | 284,355 |  |  | (123,340) |
Comprehensive income (loss) to shareholders | $ | 1,329,458 |  |  | $ | (107,500) |  |  | $ | 2,482,199 |  |  | $ | 1,103,414 |

The increase in operating income and comprehensive income (loss) to shareholders for the quarter ended September 30, 2024 compared to the quarter ended September 30, 2023 was primarily due to pre-tax net investment gains of $903.6 million on our equity securities during the quarter compared to pre-tax net investment losses of $229.8 million in the same period of 2023. Additionally, comprehensive income to shareholders for the quarter ended September 30, 2024 included pre-tax unrealized gains on our fixed maturity securities of $546.4 million compared to pre-tax unrealized losses on fixed maturity securities of $208.6 million for the same period of 2023.
The increase in operating income and comprehensive income (loss) to shareholders for the nine months ended September 30, 2024 compared to the nine months ended September 30, 2023 was primarily due to pre-tax net investment gains of $1.7 billion on our equity securities during the quarter compared to $629.3 million in the same period of 2023.
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The components of comprehensive income (loss) to shareholders are discussed in further detail under "Insurance Results," "Investing Results," "Markel Ventures Results," "Other" and "Comprehensive Income (Loss) to Shareholders."
Insurance Results
Our Insurance engine includes our underwriting, program services and other fronting and insurance-linked securities operations. Our underwriting operations, which are primarily comprised of our Insurance and Reinsurance segments, produce revenues primarily by underwriting insurance contracts and earning premiums in the specialty insurance market. Our program services and other fronting and ILS operations, which are the primary components of our other insurance operations, produce revenues primarily through fees earned for fronting services and investment management services, respectively. Our other insurance operations also include the underwriting results of run-off lines of business that were discontinued prior to, or in conjunction with, insurance acquisitions, and the results of our run-off life and annuity reinsurance business. The following table presents the components of our Insurance engine gross premium volume, operating revenues and operating income.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | % Change |  | 2024 |  | 2023 |  | % Change
Gross premium volume: |  |  |  |  |  |  |  |  |  |  |
Underwriting | $ | 2,531,589 |  |  | $ | 2,506,058 |  |  | 1 | % |  | $ | 8,229,142 |  |  | $ | 7,898,892 |  |  | 4 | %
Program services and other fronting (1) | 940,120 |  |  | 1,172,748 |  |  | (20) | % |  | 3,895,096 |  |  | 3,004,111 |  |  | 30 | %
Insurance operations | $ | 3,471,709 |  |  | $ | 3,678,806 |  |  | (6) | % |  | $ | 12,124,238 |  |  | $ | 10,903,003 |  |  | 11 | %
Operating revenues: |  |  |  |  |  |  |  |  |  |  |
Insurance segment | $ | 1,859,934 |  |  | $ | 1,848,267 |  |  | 1 | % |  | $ | 5,547,398 |  |  | $ | 5,322,377 |  |  | 4 | %
Reinsurance segment | 250,680 |  |  | 274,161 |  |  | (9) | % |  | 768,649 |  |  | 799,683 |  |  | (4) | %
Other insurance operations | 75,144 |  |  | 85,924 |  |  | (13) | % |  | 203,697 |  |  | 205,105 |  |  | (1) | %
Insurance operations | $ | 2,185,758 |  |  | $ | 2,208,352 |  |  | (1) | % |  | $ | 6,519,744 |  |  | $ | 6,327,165 |  |  | 3 | %
Operating income: |  |  |  |  |  |  |  |  |  |  |
Insurance segment | $ | 109,584 |  |  | $ | 25,092 |  |  | 337 | % |  | $ | 350,073 |  |  | $ | 256,247 |  |  | 37 | %
Reinsurance segment | (33,531) |  |  | (5,812) |  |  | (477) | % |  | (20,200) |  |  | 33,606 |  |  | NM (2)
Other insurance operations | 69,220 |  |  | 50,590 |  |  | 37 | % |  | 128,150 |  |  | 154,718 |  |  | (17) | %
Insurance operations | $ | 145,273 |  |  | $ | 69,870 |  |  | 108 | % |  | $ | 458,023 |  |  | $ | 444,571 |  |  | 3 | %

(1) Substantially all gross premiums from our program services and other fronting operations were ceded to third parties for the quarter and nine months ended September 30, 2024 and 2023.
(2) NM - Ratio is not meaningful.
Underwriting Results
Underwriting profits are a key component of our strategy to build shareholder value. We believe that the ability to achieve consistent underwriting profits demonstrates knowledge and expertise, commitment to superior customer service and the ability to manage insurance risk. The property and casualty insurance industry commonly defines underwriting profit or loss as earned premiums net of losses and loss adjustment expenses and underwriting, acquisition and insurance expenses. We use underwriting profit or loss and the combined ratio as a basis for evaluating our underwriting performance. The U.S. GAAP combined ratio is a measure of underwriting performance and represents the relationship of incurred losses, loss adjustment expenses and underwriting, acquisition and insurance expenses to earned premiums. The combined ratio is the sum of the loss ratio and the expense ratio. The loss ratio represents the relationship of incurred losses and loss adjustment expenses to earned premiums. The expense ratio represents the relationship of underwriting, acquisition and insurance expenses to earned premiums. A combined ratio less than 100% indicates an underwriting profit, while a combined ratio greater than 100% reflects an underwriting loss.
In addition to the U.S. GAAP combined ratio, loss ratio and expense ratio, we also evaluate our underwriting performance using measures that exclude the impacts of certain items on these ratios. We believe these adjusted measures, which are non-GAAP measures, provide financial statement users with a better understanding of the significant factors that comprise our underwriting results and how management evaluates underwriting performance.
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When analyzing our combined ratio, we exclude current accident year losses and loss adjustment expenses attributed to natural catastrophes and certain other significant, infrequent loss events. Due to the unique characteristics of these events, there is inherent variability as to the timing or amount of the loss, which cannot be predicted in advance. We believe measures that exclude the effects of such events are meaningful to understand the underlying trends and variability in our underwriting results that may be obscured by these items.
When analyzing our loss ratio, we typically evaluate losses and loss adjustment expenses attributable to the current accident year separate from losses and loss adjustment expenses attributable to prior accident years. Prior accident year reserve development, which can either be favorable or unfavorable, represents changes in our estimates of losses and loss adjustment expenses related to loss events that occurred in prior years. We believe a discussion of current accident year loss ratios, which exclude prior accident year reserve development, is helpful in most cases since it provides more insight into estimates of current underwriting performance and excludes changes in estimates related to prior year loss reserves. We also analyze our current accident year loss ratio excluding losses and loss adjustment expenses attributable to catastrophes. The current accident year loss ratio excluding the impact of catastrophes and other significant, infrequent loss events is also commonly referred to as an attritional loss ratio within the property and casualty insurance industry.
The following table presents summary data for our consolidated underwriting operations, which are comprised predominantly of our Insurance and Reinsurance segments. Our consolidated underwriting results also include results from discontinued lines of business and the retained portion of our program services and other fronting operations.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | % Change |  | 2024 |  | 2023 |  | % Change
Gross premium volume | $ | 2,531,400 |  | $ | 2,505,840 |  | 1 | % |  | $ | 8,228,620 |  | $ | 7,897,902 |  | 4 | %
Net written premiums | $ | 1,982,136 |  | $ | 2,027,805 |  | (2) | % |  | $ | 6,492,952 |  | $ | 6,453,276 |  | 1 | %
Earned premiums | $ | 2,110,108 |  | $ | 2,121,745 |  | (1) | % |  | $ | 6,314,834 |  | $ | 6,120,592 |  | 3 | %
Underwriting profit | $ | 75,940 |  | $ | 19,291 |  | 294 | % |  | $ | 311,297 |  | $ | 283,656 |  | 10 | %
Underwriting Ratios (1) |  |  |  |  | Point Change |  |  |  |  |  | Point Change
Loss ratio |  |  |  |  |  |  |  |  |  |  |
Current accident year loss ratio | 67.0 | % |  | 67.6 | % |  | (0.6) |  |  | 65.8 | % |  | 64.3 | % |  | 1.5 |
Prior accident years loss ratio | (5.8) | % |  | (1.4) | % |  | (4.4) |  |  | (5.5) | % |  | (2.8) | % |  | (2.7) |
Loss ratio | 61.2 | % |  | 66.2 | % |  | (5.0) |  |  | 60.3 | % |  | 61.5 | % |  | (1.2) |
Expense ratio | 35.2 | % |  | 32.9 | % |  | 2.3 |  |  | 34.7 | % |  | 33.8 | % |  | 0.9 |
Combined ratio | 96.4 | % |  | 99.1 | % |  | (2.7) |  |  | 95.1 | % |  | 95.4 | % |  | (0.3) |
Current accident year loss ratio catastrophe impact (2) | 2.9 | % |  | 2.2 | % |  | 0.7 |  |  | 1.0 | % |  | 0.8 | % |  | 0.2 |
Current accident year loss ratio, excluding catastrophes impact | 64.1 | % |  | 65.5 | % |  | (1.4) |  |  | 64.8 | % |  | 63.5 | % |  | 1.3 |
Combined ratio, excluding current year catastrophes impact | 93.5 | % |  | 96.9 | % |  | (3.4) |  |  | 94.1 | % |  | 94.6 | % |  | (0.5) |

(1) Amounts may not reconcile due to rounding.
(2) The point impact of catastrophes is calculated as the associated net losses and loss adjustment expenses divided by total earned premiums.
Premiums
The modest increase in gross premium volume in our underwriting operations for the quarter ended September 30, 2024 was driven by growth within our Insurance segment. The increase in gross premium volume in our underwriting operations for the nine months ended September 30, 2024 was driven by growth within both of our underwriting segments. Our gross premium volume growth has moderated in recent quarters resulting from corrective underwriting actions taken and our focus on pursuing business that we feel is adequately priced. We remain cautious in our selection of risks and are allowing business to lapse where we believe rates are inadequate.
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Through the first three quarters of 2024, we continued to achieve modest rate increases across our diversified product portfolio. Similar to 2023, the primary exceptions where we are seeing modest rate decreases are within our workers' compensation, risk-managed professional liability and cyber portfolios, which is consistent with the broader market trends in these product classes. We examine each of our product classes regularly by evaluating pricing and exposure, underwriting terms and conditions, deal structure, including limits and attachment points, and our expectations around loss cost trends, among other things. We target premium growth only in product lines where we are confident in the levels of rate adequacy.
We continued to achieve rate increases within our personal lines and select marine and energy product lines, and we believe these product lines continue to be priced at a level that will earn appropriate returns on capital. As a result, we are continuing to increase our premium writings in these lines. Our property product lines achieved rate increases at the beginning of 2024 before softening during the year and turning slightly negative in the third quarter. Additionally, we achieved high single digit rate increases within many of our general liability product lines with U.S. exposures, and these rate increases are generally in line with, or better than, our assumptions on loss cost trends. We are being cautious in selecting which risks to pursue and how much limit to deploy within certain subclasses of our general liability portfolio as we rebalance our general liability portfolio and focus on growth in areas of the portfolio that we project will meet our profitability requirements.
Within our professional liability product lines, we saw modest rate decreases driven by the continued rate decreases within our risk-managed professional liability product lines. Within these lines, we are contracting our new premium writings and reducing limits deployed and are also allowing business to lapse when we believe rates are inadequate. In other professional liability product lines, particularly within our international portfolio and our U.S. commercial products, we are generally seeing small rate decreases; however, these pockets of the portfolio are adequately priced overall, and we are continuing to pursue growth opportunities.
Net retention of gross premium volume in our underwriting operations was 78% for the quarter ended September 30, 2024 compared to 81% for the same period of 2023, and 79% for the nine months ended September 30, 2024 compared to 82% for the same period of 2023. The decrease in net retention for the quarter and nine months ended September 30, 2024 was driven by lower retention within our Insurance segment. Within our underwriting operations, we purchase reinsurance and retrocessional reinsurance to manage our net retention on individual risks and overall exposure to losses and to enable us to write policies with sufficient limits to meet policyholder needs.
The modest decrease in earned premiums in our underwriting operations for the quarter ended September 30, 2024 was driven by our Reinsurance segment. The increase in earned premiums in our underwriting operations for the nine months ended September 30, 2024 was primarily attributable to higher gross premium volume within our Insurance segment in recent periods.
Combined Ratio
Excluding losses attributed to natural catastrophes, the decrease in our consolidated combined ratio for the quarter and nine months ended September 30, 2024 was primarily attributable to more favorable development on prior accident years loss reserves in 2024 compared to 2023 within our Insurance segment.
Natural Catastrophes
Underwriting results for the quarter and nine months ended September 30, 2024 included $62.0 million of net losses and loss adjustment expenses attributed to Hurricane Helene. Underwriting results for the quarter and nine months ended September 30, 2023 included $46.2 million of net losses and loss adjustment expenses attributed to the Hawaiian wildfires and Hurricane Idalia (2023 Catastrophes). The net losses and loss adjustment expenses attributed to Hurricane Helene as of September 30, 2024 represent our best estimate based upon information currently available. Due to limited claims activity, our estimate for these losses is based on preliminary industry loss estimates and output from industry, broker and proprietary models, as well as policy level reviews and analysis of ceded reinsurance contracts. This estimate is based on various assumptions about coverage and liability and is therefore subject to change. While we believe our net reserves for Hurricane Helene as of September 30, 2024 are adequate, we continue to closely monitor reported claims and may adjust our estimate of net losses as new information becomes available.
In October 2024, Hurricane Milton made landfall in Florida. Based on information currently available, we estimate our range of net losses and loss adjustment expenses from this event to be between $40.0 million and $80.0 million, before income taxes. This estimated range of losses was derived based on preliminary industry loss estimates and a high-level review of in-force contracts, as well as an analysis of ceded reinsurance contracts. We will refine our estimate of net losses, which will be recorded in the fourth quarter of 2024, as more details about the event and actual level of claims emerge.
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Intellectual Property Collateral Protection Insurance
During the quarter and nine months ended September 30, 2024 and 2023, we recognized losses on our recently discontinued intellectual property collateral protection insurance (IP CPI) product in our Insurance segment. The following table summarizes the losses recognized and their impact on our Insurance segment and consolidated combined ratios.

| Quarter Ended September 30,
| 2024 |  | 2023
| Losses and loss adjustment expenses |  | Point impact on combined ratio (1) |  | Losses and loss adjustment expenses |  | Point impact on combined ratio (1)
(dollars in thousands) |  | Insurance segment |  | Consolidated |  |  | Insurance segment |  | Consolidated
Current accident year (2) | $ | 39,821 |  |  | 2.1 | % |  | 1.9 | % |  | $ | 51,100 |  |  | 2.8 | % |  | 2.4 | %
Prior accident years | 2,067 |  |  | 0.1 | % |  | 0.1 | % |  | 12,865 |  |  | 0.7 | % |  | 0.6 | %
Total | $ | 41,888 |  |  | 2.3 | % |  | 2.0 | % |  | $ | 63,965 |  |  | 3.5 | % |  | 3.0 | %

(1) The impact on the combined ratio is calculated as associated net losses and loss adjustment expenses divided by total Insurance segment or consolidated earned premiums, as applicable. Earned premiums on our IP CPI product for the quarters ended September 30, 2024 and 2023 were not material.
(2) Current accident year losses and loss adjustment expenses for the quarter ended September 30, 2023 included $25.0 million of credit losses in connection with a fraudulent letter of credit that was provided by an affiliate of Vesttoo Ltd. as collateral for reinsurance purchased on one of the policies that resulted in a claim.

| Nine Months Ended September 30,
| 2024 |  | 2023
| Losses and loss adjustment expenses |  | Point impact on combined ratio (1) |  | Losses and loss adjustment expenses |  | Point impact on combined ratio (1)
(dollars in thousands) |  | Insurance segment |  | Consolidated |  |  | Insurance segment |  | Consolidated
Current accident year (2) | $ | 106,996 |  |  | 1.9 | % |  | 1.7 | % |  | $ | 55,624 |  |  | 1.0 | % |  | 0.9 | %
Prior accident years | 31,724 |  |  | 0.6 | % |  | 0.5 | % |  | 12,336 |  |  | 0.2 | % |  | 0.2 | %
Total | $ | 138,720 |  |  | 2.5 | % |  | 2.2 | % |  | $ | 67,960 |  |  | 1.3 | % |  | 1.1 | %

(1) The impact on the combined ratio is calculated as associated net losses and loss adjustment expenses divided by total Insurance segment or consolidated earned premiums, as applicable. Earned premiums on our IP CPI product for the nine months ended September 30, 2024 and 2023 were not material.
(2) Current accident year losses and loss adjustment expenses for the nine months ended September 30, 2023 included $25.0 million of credit losses in connection with a fraudulent letter of credit that was provided by an affiliate of Vesttoo Ltd. as collateral for reinsurance purchased on one of the policies that resulted in a claim.
Beginning in the third quarter of 2023, we began to observe higher than expected levels of defaults on loans collateralized by intellectual property, for which we provide coverage to the lenders through our IP CPI product line. Furthermore, for loans that are in default, the intellectual property that serves as security for the loans has proven to be less valuable than we initially anticipated.
In response to these adverse developments and the product's ultimate inability to meet our profitability targets, we discontinued writing this product at the beginning of 2024. However, we have continued to recognize losses on our IP CPI product line in 2024 as additional claim events occurred, which result from both a default on the loan and impairment of the underlying intellectual property. As of September 30, 2024, all losses on probable claims have been recognized, however, we believe the potential for additional claims over the next 12 to 18 months is reasonably possible, and such amounts could be material to our results of operations, financial condition and cash flows. However, we believe the impact of such losses in any future quarter is unlikely to be significantly more than what we recognized in each of the past three quarters.
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Insurance Segment

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | % Change |  | 2024 |  | 2023 |  | % Change
Gross premium volume | $ | 2,410,480 |  | $ | 2,372,941 |  | 2 | % |  | $ | 7,133,721 |  | $ | 6,926,282 |  | 3 | %
Net written premiums | $ | 1,872,923 |  | $ | 1,915,212 |  | (2) | % |  | $ | 5,507,342 |  | $ | 5,563,881 |  | (1) | %
Earned premiums | $ | 1,859,934 |  | $ | 1,848,267 |  | 1 | % |  | $ | 5,547,398 |  | $ | 5,322,377 |  | 4 | %
Underwriting profit | $ | 109,584 |  | $ | 25,092 |  | 337 | % |  | $ | 350,073 |  | $ | 256,247 |  | 37 | %
Underwriting Ratios (1) |  |  |  |  | Point Change |  |  |  |  |  | Point Change
Loss ratio |  |  |  |  |  |  |  |  |  |  |
Current accident year loss ratio | 65.4 | % |  | 68.1 | % |  | (2.7) |  |  | 65.1 | % |  | 64.2 | % |  | 0.9 |
Prior accident years loss ratio | (7.0) | % |  | (3.0) | % |  | (4.0) |  |  | (6.7) | % |  | (3.4) | % |  | (3.3) |
Loss ratio | 58.3 | % |  | 65.1 | % |  | (6.8) |  |  | 58.3 | % |  | 60.8 | % |  | (2.5) |
Expense ratio | 35.8 | % |  | 33.5 | % |  | 2.3 |  |  | 35.4 | % |  | 34.4 | % |  | 1.0 |
Combined ratio | 94.1 | % |  | 98.6 | % |  | (4.5) |  |  | 93.7 | % |  | 95.2 | % |  | (1.5) |
Current accident year loss ratio catastrophe impact (2) | 3.3 | % |  | 2.4 | % |  | 0.9 |  |  | 1.1 | % |  | 0.8 | % |  | 0.3 |
Current accident year loss ratio, excluding catastrophes impact | 62.1 | % |  | 65.7 | % |  | (3.6) |  |  | 64.0 | % |  | 63.3 | % |  | 0.7 |
Combined ratio, excluding current year catastrophes impact | 90.8 | % |  | 96.2 | % |  | (5.4) |  |  | 92.6 | % |  | 94.4 | % |  | (1.8) |

(1) Amounts may not reconcile due to rounding.
(2) The point impact of catastrophes is calculated as the associated net losses and loss adjustment expenses divided by total earned premiums.
Premiums
The increase in gross premium volume in our Insurance segment for the quarter and nine months ended September 30, 2024 was driven by new business growth and more favorable rates within our personal lines, programs, marine and energy and credit and surety product lines, partially offset by lower premium volume within select lines of our U.S. general liability and professional liability product lines. We have decreased writings within our risk-managed professional liability products and our brokerage contractors, brokerage excess and umbrella and risk-managed excess casualty general liability products in response to underwriting actions aimed at achieving greater profitability within these product lines.
Net retention of gross premium volume was 78% for the quarter ended September 30, 2024 compared to 81% for the same period of 2023, and 77% for the nine months ended September 30, 2024 compared to 80% for the same period of 2023. The decrease in net retention for the quarter and nine months ended September 30, 2024 was driven by higher cessions on our professional liability product lines in 2024 compared to 2023, as well as changes in mix of business as we decreased writings on select lines of our U.S. general liability and professional liability product lines, which have lower cession rates than most of the segment.
The increase in earned premiums for the nine months ended September 30, 2024 was primarily due to higher gross premium volume in recent periods.
Combined Ratio
The Insurance segment's combined ratio for the quarter and nine months ended September 30, 2024 included $61.0 million of net losses and loss adjustment expenses attributed to Hurricane Helene. For the quarter and nine months ended September 30, 2023, the combined ratio included $44.3 million of net losses and loss adjustment expenses attributed to the 2023 Catastrophes.
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Quarter-to-Date Variance
Excluding losses attributed to natural catastrophes, the decrease in the Insurance segment's current accident year loss ratio for the quarter ended September 30, 2024 compared to the same period of 2023 was primarily attributable to lower attritional loss ratios within our marine and energy product lines and higher ceded loss recovery assumptions on our general liability product lines, partially offset by higher attritional loss ratios within our U.S. professional liability product lines.
The Insurance segment's combined ratio for the quarter ended September 30, 2024 included $130.4 million of favorable development on prior accident years loss reserves compared to $55.4 million for the same period of 2023. The increase in favorable development was primarily due to more favorable development on our international product lines, most notably within our international professional liability product lines, as well as the impact of adverse development on our U.S. general liability product lines in the third quarter of 2023. These increases in favorable development were partially offset by more adverse development on our U.S. professional liability product lines in the third quarter of 2024 compared to the same period of 2023.
For the quarter ended September 30, 2024, favorable development was most significant on our general liability and international professional liability product lines, primarily in more recent accident years. We continue to approach reductions of prior year loss reserves on our long-tail U.S. professional liability and general liability product lines with caution given recent claims trends. The favorable development on prior years loss reserves in the third quarter of 2023 was attributable to favorable development across several product lines.
The increase in the Insurance segment's expense ratio for the quarter ended September 30, 2024 compared to the same period of 2023 was primarily attributable to higher personnel costs, including profit sharing expenses, and other general and administrative expenses.
Year-to-Date Variance
Excluding losses attributed to natural catastrophes, the increase in the Insurance segment's current accident year loss ratio for the nine months ended September 30, 2024 compared to the same period of 2023 was primarily attributable to higher attritional loss ratios within our U.S. professional liability product lines, including a two point impact of losses from our IP CPI product line in 2024 compared to a one point impact in 2023, as well as higher attritional loss ratios within our U.S. general liability product lines. We have increased our attritional loss ratios on certain product classes within our U.S. professional liability and general liability product lines in response to unfavorable loss development trends in recent periods.
The Insurance segment's combined ratio for the nine months ended September 30, 2024 included $374.2 million of favorable development on prior accident years loss reserves compared to $179.6 million for the same period of 2023. The increase in favorable development was primarily attributable to modest favorable development on our U.S. general liability product lines in 2024 compared to significant adverse development in 2023, as well as more favorable development on our international product lines, most notably within our international professional liability product lines. These increases in favorable development were partially offset by more adverse development on our U.S. professional liability product lines in 2024 compared to 2023.
For the nine months ended September 30, 2024, favorable development was most significant on our international professional liability product lines, as well as our general liability, property and credit and surety product lines, primarily in more recent accident years. The favorable development on prior years loss reserves in 2023 was most significant on our international professional liability product lines, as well as our property, marine and energy, workers' compensation and personal lines product lines.
The increase in the Insurance segment's expense ratio for the nine months ended September 30, 2024 compared to the same period of 2023 was due to the same factors as discussed on a quarter-to-date basis, however, these drivers had a less significant impact over the nine month period. Additionally, the expense ratio benefited from stronger earned premium growth in the year-to-date period.
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Reinsurance Segment

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | % Change |  | 2024 |  | 2023 |  | % Change
Gross premium volume | $ | 121,157 |  | $ | 126,037 |  | (4) | % |  | $ | 1,095,094 |  | $ | 959,198 |  | 14 | %
Net written premiums | $ | 109,700 |  | $ | 113,430 |  | (3) | % |  | $ | 986,769 |  | $ | 891,017 |  | 11 | %
Earned premiums | $ | 250,680 |  | $ | 274,161 |  | (9) | % |  | $ | 768,649 |  | $ | 799,683 |  | (4) | %
Underwriting profit (loss) | $ | (33,531) |  | $ | (5,812) |  | (477) | % |  | $ | (20,200) |  | $ | 33,606 |  | NM (1)
Underwriting Ratios (2) |  |  |  |  | Point Change |  |  |  |  |  | Point Change
Loss ratio |  |  |  |  |  |  |  |  |  |  |
Current accident year loss ratio | 79.0 | % |  | 64.2 | % |  | 14.8 |  |  | 71.1 | % |  | 64.9 | % |  | 6.2 |
Prior accident years loss ratio | 3.2 | % |  | 8.5 | % |  | (5.3) |  |  | 1.8 | % |  | 0.8 | % |  | 1.0 |
Loss ratio | 82.2 | % |  | 72.7 | % |  | 9.5 |  |  | 72.8 | % |  | 65.7 | % |  | 7.1 |
Expense ratio | 31.2 | % |  | 29.4 | % |  | 1.8 |  |  | 29.8 | % |  | 30.1 | % |  | (0.3) |
Combined ratio | 113.4 | % |  | 102.1 | % |  | 11.3 |  |  | 102.6 | % |  | 95.8 | % |  | 6.8 |
Current accident year loss ratio catastrophe impact (3) | 0.4 | % |  | 0.7 | % |  | (0.3) |  |  | 0.1 | % |  | 0.2 | % |  | (0.1) |
Current accident year loss ratio, excluding catastrophe impact | 78.6 | % |  | 63.5 | % |  | 15.1 |  |  | 70.9 | % |  | 64.7 | % |  | 6.2 |
Combined ratio, excluding current year catastrophe impact | 113.0 | % |  | 101.4 | % |  | 11.6 |  |  | 102.5 | % |  | 95.6 | % |  | 6.9 |

(1) NM - Ratio is not meaningful.
(2) Amounts may not reconcile due to rounding.
(3) The point impact of catastrophes is calculated as the associated net losses and loss adjustment expenses divided by total earned premiums.
Premiums
The decrease in gross premium volume in our Reinsurance segment for the quarter ended September 30, 2024 was driven by the impact of unfavorable premium adjustments within our credit and surety and general liability product lines in 2024 compared to favorable premium adjustments in 2023, partially offset by new business within our professional liability product lines. For the nine months ended September 30, 2024, the increase in gross premium volume was driven by increases on renewals and new business within our professional liability, marine and energy and general liability product lines. For the nine months ended September 30, 2024, these increases were partially offset by the impact of non-renewals of certain significant contracts within our professional liability product lines as a result of our continued focus on rate adequacy and only writing business that meets our underwriting profit targets. Significant variability in gross premium volume can be expected in our Reinsurance segment due to individually significant contracts and multi-year contracts.
Net retention of gross premium volume for the quarter ended September 30, 2024 was 91% compared to 90% for the same period of 2023. The increase of net retention for the quarter ended September 30, 2024 was driven by changes in mix of business, as our professional liability business is fully retained. Net retention of gross premium volume for the nine months ended September 30, 2024 was 90% compared to 93% for the same period of 2023. The decrease in net retention for the nine months ended September 30, 2024 was driven by the increased premium volume in our marine and energy business, which carries a higher cession rate than the segment.
For the quarter ended September 30, 2024, the decrease in earned premiums was primarily due to unfavorable premium adjustments within our general liability and credit and surety product lines in the third quarter of 2024 compared to favorable premium adjustments in same period of 2023. For the nine months ended September 30, 2024, the decrease in earned premiums was primarily attributable to lower gross premium volume within our professional liability product lines in recent periods and less favorable premium adjustments within our general liability product lines in 2024 compared to 2023, partially offset by the impact of higher gross premium volume within our general liability product lines in recent periods.
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Combined Ratio
Within our Reinsurance segment, we estimate and record assumed reinsurance premiums at the inception of each contract based upon contract terms and information received from cedents and brokers. Changes in assumed reinsurance premium estimates are expected as additional information regarding changes in underlying exposures is obtained. A change in our assumed reinsurance premium estimates also results in a change to loss reserves, as a result of the corresponding change in our exposure recognized, which frequently relates to prior accident years. When we have significant variability in the direction and level of premium adjustments on prior accident years between comparable periods, we believe it is more meaningful to evaluate our loss ratio in total than to evaluate our current accident year loss ratio and prior accident year loss ratio separately, due to the significant and offsetting impact that premium adjustments have on these individual ratios.
Quarter-to-Date
Premium adjustments had a three point unfavorable impact on our current accident year loss ratio and an offsetting favorable impact on our prior accident year loss ratio for the quarter ended September 30, 2024 compared to a two point favorable impact on our current accident year loss ratio and an offsetting unfavorable impact on our prior accident year loss ratio for the same period of 2023.
The increase in the Reinsurance segment's loss ratio for the quarter ended September 30, 2024 compared to the same period of 2023 was primarily due to the impact of large losses on our credit and surety product line, as well as higher current accident year attritional loss ratios within our professional liability, general liability and public entity product lines, and assumed reinstatement premiums recognized in 2023 within our property product lines, which did not recur in 2024. Additionally, our loss ratio included $30.8 million, or 12 points, of adverse development on our public entity product line for the quarter ended September 30, 2024 and $30.0 million, or 11 points, for the quarter ended September 30, 2023.
Adverse development on our public entity product line in 2023 was due to increased frequency of large claims over several quarters. This adverse development, which was most significant on the 2014 to 2020 accident years, was attributable to a segment of business that we discontinued writing in 2020. In 2024, we observed similar unfavorable claims trends across the product line and also determined that the loss trends on more recent accident years were following a similar loss development trend as the older accident years across the product line. In response to these continued adverse trends and the product's ultimate inability to meet our profitability targets, we decided to discontinue writing the public entity product line during the third quarter of 2024.
The increase in the Reinsurance segment's expense ratio for the quarter ended September 30, 2024 compared to the same period of 2023 was primarily attributable to higher general and administrative expenses.
Year-to-Date
Premium adjustments had a one point unfavorable impact on our current accident year loss ratio and an offsetting favorable impact on our prior accident year loss ratio for the nine months ended September 30, 2024 compared to a two point favorable impact on our current accident year loss ratio and an offsetting unfavorable impact on our prior accident year loss ratio for the same period of 2023.
The increase in the Reinsurance segment's loss ratio for the nine months ended September 30, 2024 compared to the same period of 2023 was primarily due to higher current accident year attritional loss ratios within our professional liability, general liability and public entity product lines and the impact of adverse development on prior accident years loss reserves in 2024 compared to favorable development in 2023. Adverse development in 2024 was driven by our public entity product line, as previously discussed, and was net of modest favorable development on our professional liability and property product lines. Favorable development in 2023 was driven by our professional liability and property product lines, and was net of adverse development on our public entity product line, as previously discussed, and our general liability product lines.
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Other Insurance Operations
The following table presents the components of operating revenues and operating income attributable to our other insurance operations, which are not included in a reportable segment. We do not allocate amortization of acquired intangible assets to our operating segments, including our other insurance operations.

| Quarter Ended September 30,
| 2024 |  | 2023
(dollars in thousands) | Operating revenues |  | Operating income (loss) |  | Operating revenues |  | Operating income (loss)
Program services and other fronting | $ | 47,261 |  |  | $ | 35,698 |  |  | $ | 39,749 |  |  | $ | 31,810 |
Insurance-linked securities | 25,145 |  |  | 3,697 |  |  | 43,567 |  |  | 17,969 |
Life and annuity (1) | (62) |  |  | (2,891) |  |  | — |  |  | (1,863) |
Markel CATCo Re (2) | — |  |  | 33,407 |  |  | — |  |  | 2,231 |
Other | 3,306 |  |  | (578) |  |  | 3,291 |  |  | 432 |
| 75,650 |  |  | 69,333 |  |  | 86,607 |  |  | 50,579 |
Underwriting (3) | (506) |  |  | (113) |  |  | (683) |  |  | 11 |
Other insurance operations | $ | 75,144 |  |  | $ | 69,220 |  |  | $ | 85,924 |  |  | $ | 50,590 |

(1) Investment income earned on the investments that support life and annuity policy benefit reserves is included in our Investing segment.
(2) Results attributable to Markel CATCo Re for all periods were entirely attributable to noncontrolling interest holders in Markel CATCo Re. See note 12.
(3) Underwriting results attributable to our other insurance operations include results from discontinued lines of business and the retained portion of our program services and other fronting operations.

| Nine Months Ended September 30,
| 2024 |  | 2023
(dollars in thousands) | Operating revenues |  | Operating income (loss) |  | Operating revenues |  | Operating income (loss)
Program services and other fronting | $ | 130,337 |  |  | $ | 99,107 |  |  | $ | 106,619 |  |  | $ | 84,309 |
Program services - disposition gain | — |  |  | — |  |  | 16,923 |  |  | 16,923 |
Insurance-linked securities | 66,219 |  |  | 1,567 |  |  | 74,148 |  |  | 15,108 |
Life and annuity (1) | (80) |  |  | (9,112) |  |  | 48 |  |  | (8,761) |
Markel CATCo Re (2) | — |  |  | 57,462 |  |  | — |  |  | 55,696 |
Other | 8,434 |  |  | (2,298) |  |  | 8,835 |  |  | (2,360) |
| 204,910 |  |  | 146,726 |  |  | 206,573 |  |  | 160,915 |
Underwriting (3) | (1,213) |  |  | (18,576) |  |  | (1,468) |  |  | (6,197) |
Other insurance operations | $ | 203,697 |  |  | $ | 128,150 |  |  | $ | 205,105 |  |  | $ | 154,718 |

(1) Investment income earned on the investments that support life and annuity policy benefit reserves is included in our Investing segment.
(2) Results attributable to Markel CATCo Re for all periods were entirely attributable to noncontrolling interest holders in Markel CATCo Re. See note 12.
(3) Underwriting results attributable to our other insurance operations include results from discontinued lines of business and the retained portion of our program services and other fronting operations.
Program Services and Other Fronting
The increase in operating revenues and operating income within our program services and other fronting operations for the quarter and nine months ended September 30, 2024 was due to higher gross premium volume in recent periods. The following table summarizes gross premium volume in our program services and other fronting operations.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | % Change |  | 2024 |  | 2023 |  | % Change
Program services | $ | 844,434 |  |  | $ | 684,296 |  |  | 23 | % |  | $ | 2,678,686 |  |  | $ | 2,187,015 |  |  | 22 | %
Other fronting | $ | 95,686 |  |  | $ | 488,453 |  |  | (80) | % |  | $ | 1,216,410 |  |  | $ | 817,097 |  |  | 49 | %

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The increase in gross premium volume within our program services operations for the quarter and nine months ended September 30, 2024 was primarily attributable to expansion of existing programs and new business.
For the quarter ended September 30, 2024, the decrease in gross premium volume in our other fronting operations, which represents business written by one of our licensed insurance subsidiaries on behalf of the Nephila Reinsurers, was driven by timing differences. For the nine months ended September 30, 2024, the increase in gross premium volume in our other fronting operations was primarily due to growth of our property catastrophe and specialty programs with the Nephila Reinsurers.
In June 2023, we sold a subsidiary within our program services operations, which resulted in a gain of $16.9 million.
Insurance-Linked Securities
The decrease in operating revenues in our Nephila insurance-linked securities operations for the quarter and nine months ended September 30, 2024 was primarily due to $29.5 million of investment management fees recognized in the third quarter of 2023 upon the release of capital from side pocket reserves with no comparable activity in 2024, partially offset by the favorable impact of changes in the mix of investment products within the funds managed. Nephila's net assets under management were $7.0 billion as of September 30, 2024.
Underwriting
For the nine months ended September 30, 2024, the underwriting operating loss in our other insurance operations was primarily attributable to loss adjustment expenses related to asbestos and environmental exposures. Development on asbestos and environmental loss reserves is monitored separately from our ongoing underwriting operations and is not included in the Insurance or Reinsurance segments.
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Investing Results
We measure our investment performance by analyzing net investment income, which reflects the recurring interest and dividend earnings on our investment portfolio. We also analyze net investment gains, which include unrealized gains and losses on our equity portfolio. Based on the potential for volatility in the financial markets, we understand that the level of gains or losses may vary from one period to the next, and therefore believe that our investment performance is best analyzed over longer periods of time. As of September 30, 2024, the fair value of our equity portfolio included cumulative unrealized gains of $7.8 billion.
The following table summarizes our consolidated investment performance, which consists predominantly of the results of our Investing segment. Net investment gains or losses in any given period are typically attributable to changes in the fair value of our equity portfolio due to market value movements. The change in net unrealized losses on available-for-sale investments in any given period is typically attributable to changes in the fair value of our fixed maturity portfolio due to changes in interest rates during the period. As of September 30, 2024, 98% of our fixed maturity portfolio was rated "AA" or better.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | 2024 |  | 2023
Net investment income | $ | 235,477 |  |  | $ | 192,207 |  |  | $ | 676,807 |  |  | $ | 521,235 |
Yield on fixed maturity securities (1) | 3.3 | % |  | 2.9 | % |  | 3.2 | % |  | 2.7 | %
Yield on short-term investments (1) | 4.8 | % |  | 5.0 | % |  | 4.8 | % |  | 4.4 | %
Yield on cash and cash equivalents and restricted cash and cash equivalents (1) | 3.7 | % |  | 3.0 | % |  | 3.7 | % |  | 2.6 | %
Net realized investment gains (losses) | $ | 13,891 |  | $ | (36,093) |  | $ | (4,604) |  | $ | (38,159)
Change in fair value of equity securities | 903,639 |  | (229,824) |  | 1,694,398 |  | 629,332
Net investment gains (losses) | $ | 917,530 |  | $ | (265,917) |  | $ | 1,689,794 |  | $ | 591,173
Return on equity securities (2) | 8.8 | % |  | (2.2) | % |  | 18.5 | % |  | 9.3 | %
Other (3) | $ | 14,971 |  | $ | (5,033) |  | $ | 45,174 |  | $ | (13,791)
Change in net unrealized losses on available-for-sale investments | $ | 551,244 |  | $ | (208,405) |  | $ | 358,877 |  | $ | (170,606)

(1) Yields reflect the applicable annualized interest income as a percentage of the applicable monthly average invested assets at amortized cost.
(2) Return on equity securities is calculated by dividing dividends and the change in fair value of equity securities by the monthly average equity securities at fair value and considers the timing of net purchases and sales.
(3) Other income or losses within our investing operations primarily relate to equity method investments in our investing segment, which are managed separately from the rest of our investment portfolio.
For the quarter and nine months ended September 30, 2024, net investment income increased 23% and 30%, respectively, primarily driven by higher interest income on fixed maturity securities due to a higher yield and higher average holdings of fixed maturity securities in 2024 compared to 2023. For the nine months ended September 30, 2024, the increase in net investment income was also driven by higher short-term interest rates. During 2024, we have continued to allocate cash to money market funds, short-term investments and fixed maturity securities to take advantage of high interest rates and to support our growing underwriting business. See note 4(d) of the notes to consolidated financial statements for details regarding the components of net investment income.
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Markel Ventures Results
We measure the operating performance of our Markel Ventures segment by its operating income, as well as earnings before interest, income taxes, depreciation and amortization (EBITDA). We consolidate the results of our Markel Ventures subsidiaries on a one-month lag, with the exception of significant transactions or events that occur during the intervening period. The following table summarizes the results from our Markel Ventures segment.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | % Change |  | 2024 |  | 2023 |  | % Change
Operating revenues | $ | 1,259,621 |  |  | $ | 1,246,769 |  |  | 1 | % |  | $ | 3,854,008 |  |  | $ | 3,738,028 |  |  | 3 | %
Segment operating income | $ | 106,627 |  |  | $ | 130,420 |  |  | (18) | % |  | $ | 388,040 |  |  | $ | 392,648 |  |  | (1) | %
EBITDA | $ | 137,155 |  |  | $ | 157,277 |  |  | (13) | % |  | $ | 477,939 |  |  | $ | 474,287 |  |  | 1 | %

For the quarter ended September 30, 2024, the increase in operating revenues was primarily driven by the impact of higher prices at one of our consumer and building products businesses and increased demand at our equipment manufacturing businesses, as well as the contribution from Valor, which was acquired in June 2024. For the nine months ended September 30, 2024, the increase in operating revenues was primarily driven by higher revenues at our consumer building products businesses due to a combination of higher prices, increased demand and the contribution from an acquisition made at one of these businesses in the first quarter of 2024. For both the quarter and nine months ended September 30, 2024, these increases in operating revenues were largely offset by the impact of decreased demand and lower prices across a number of our other businesses, most notably at one of our transportation-related businesses.
For the quarter ended September 30, 2024, the decreases in segment operating income and EBITDA were driven by the impact of lower revenues and operating margins across a number of our businesses, most notably at one of our transportation-related businesses and our construction services businesses. The decreases in segment operating income and EBITDA were partially offset by the impact of higher revenues and operating margins at our equipment manufacturing businesses and one of our consumer and building products businesses.
Segment operating income and EBITDA for the nine months ended September 30, 2024 were consistent with segment operating income and EBITDA for the same period of 2023. Segment operating income and EBITDA decreased at our construction services businesses and one of our transportation-related businesses due to the impact of lower revenues and operating margins. The decreases in segment operating income and EBITDA at these businesses were offset by increases at our consumer and building products businesses due to the impact of higher revenues and operating margins.
Markel Ventures segment EBITDA is a non-GAAP financial measure. We use Markel Ventures segment EBITDA as an operating performance measure in conjunction with our segment performance metric, segment operating income, to monitor and evaluate the performance of our Markel Ventures segment. Because EBITDA excludes interest, income taxes, depreciation and amortization, it provides an indicator of economic performance that is useful to both management and investors in evaluating our Markel Ventures businesses as it is not affected by levels of debt, interest rates, effective tax rates or levels of depreciation or amortization resulting from purchase accounting. The following table reconciles Markel Ventures segment operating income to EBITDA.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | 2024 |  | 2023
Markel Ventures segment operating income | $ | 106,627 |  |  | $ | 130,420 |  |  | $ | 388,040 |  |  | $ | 392,648 |
Depreciation expense | 30,528 |  |  | 26,857 |  |  | 89,899 |  |  | 81,639 |
Markel Ventures segment EBITDA | $ | 137,155 |  |  | $ | 157,277 |  |  | $ | 477,939 |  |  | $ | 474,287 |

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Other
The following table presents the components of consolidated net income that are not allocated to our operating segments.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | 2024 |  | 2023
Amortization of acquired intangible assets | $ | 46,459 |  |  | $ | 47,545 |  |  | $ | 134,981 |  |  | $ | 136,367 |
Interest expense | $ | 53,361 |  |  | $ | 44,553 |  |  | $ | 151,506 |  |  | $ | 141,212 |
Net foreign exchange (gains) losses | $ | 111,612 |  |  | $ | (39,246) |  |  | $ | 51,401 |  |  | $ | 8,658 |
Income tax expense | $ | 259,411 |  |  | $ | 14,235 |  |  | $ | 628,211 |  |  | $ | 339,903 |
Effective tax rate |  |  |  |  | 22 | % |  | 21 | %

Interest Expense
The increase in interest expense for the quarter and nine months ended September 30, 2024 was attributable to the issuance of our 6.0% unsecured senior notes in May 2024.
Net Foreign Exchange Gains (Losses)
Net foreign exchange gains (losses) are primarily due to the remeasurement of our foreign currency denominated insurance loss reserves to the U.S. Dollar. The predominant foreign currencies within our insurance operations are the British Pound and the Euro. The U.S. Dollar weakened against the British Pound and Euro during 2024, most notably in the third quarter, while it weakened against the British Pound and Euro during the first half of 2023 before strengthening against the British Pound and Euro during the third quarter of 2023. Pre-tax net foreign exchange gains and losses attributed to changes in exchange rates on available-for-sale securities supporting our insurance reserves, which are included in the changes in net unrealized losses on available-for-sale investments in other comprehensive income (loss), were gains of $98.8 million and $53.2 million for the quarter and nine months ended September 30, 2024, respectively, compared to losses of $27.3 million and gains of $7.9 million for the same periods of 2023.
Income Taxes
The increase in the effective tax rate for the nine months ended September 30, 2024 compared to the same period of 2023 was due to higher state taxes.
Comprehensive Income (Loss) to Shareholders
The following table summarizes the components of comprehensive income (loss) to shareholders.

| Quarter Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | 2024 |  | 2023
Net income to shareholders | $ | 904,959 |  |  | $ | 42,591 |  |  | $ | 2,197,844 |  |  | $ | 1,226,754 |
Other comprehensive income (loss): |  |  |  |  |  |  |
Change in net unrealized losses on available-for-sale investments, net of taxes | 434,564 |  |  | (164,461) |  |  | 282,992 |  |  | (134,847) |
Change in discount rate for life and annuity benefits, net of taxes | (14,298) |  |  | 14,609 |  |  | (1,907) |  |  | 8,781 |
Other, net of taxes | 4,257 |  |  | (167) |  |  | 3,366 |  |  | 2,809 |
Other comprehensive income attributable to noncontrolling interest | (24) |  |  | (72) |  |  | (96) |  |  | (83) |
Other comprehensive income (loss) to shareholders | 424,499 |  |  | (150,091) |  |  | 284,355 |  |  | (123,340) |
Comprehensive income (loss) to shareholders | $ | 1,329,458 |  |  | $ | (107,500) |  |  | $ | 2,482,199 |  |  | $ | 1,103,414 |

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Financial Condition
Liquidity and Capital Resources
We seek to maintain prudent levels of liquidity and financial leverage for the benefit and protection of our policyholders, creditors and shareholders. Our consolidated debt to capital ratio was 20% at both September 30, 2024 and December 31, 2023, which is within the range of our target capital structure.
In May 2024, we issued $600 million of 6.0% unsecured senior notes due May 2054 with net proceeds of $592.6 million, before expenses. We intend to use these proceeds for general corporate purposes, which may include the redemption, in whole or in part, of our outstanding preferred shares. As of September 30, 2024, we had 600,000 preferred shares issued and outstanding, which we have the option to redeem, in whole or in part, on June 1, 2025, at $1,000 per preferred share, plus accrued and unpaid dividends.
Investments, cash and cash equivalents and restricted cash and cash equivalents (invested assets) were $34.6 billion and $30.9 billion at September 30, 2024 and December 31, 2023, respectively. The following table presents the composition of our invested assets.

| September 30, 2024 |  | December 31, 2023
Fixed maturity securities | 46 | % |  | 47 | %
Equity securities | 34 | % |  | 31 | %
Short-term investments, cash and cash equivalents and restricted cash and cash equivalents | 20 | % |  | 22 | %
Total | 100 | % |  | 100 | %

Our holding company had $4.1 billion and $3.5 billion of invested assets at September 30, 2024 and December 31, 2023, respectively. The increase was primarily due to net proceeds from our May 2024 debt offering, as well as an increase in the fair value of equity securities held by our holding company, partially offset by cash used to repurchase shares of our common stock. The following table presents the composition of our holding company's invested assets.

| September 30, 2024 |  | December 31, 2023
Fixed maturity securities | 3 | % |  | 4 | %
Equity securities | 51 | % |  | 49 | %
Short-term investments, cash and cash equivalents and restricted cash and cash equivalents | 46 | % |  | 47 | %
Total | 100 | % |  | 100 | %

We have a share repurchase program, authorized by our Board of Directors, that provides for the repurchase of up to $750 million of common stock. As of September 30, 2024, $332.1 million remained available for repurchases under the program. This share repurchase program has no expiration date but may be terminated by the Board of Directors at any time.
We may from time to time seek to prepay, retire or repurchase our outstanding senior notes or preferred shares, through open market purchases, privately negotiated transactions or otherwise. Those prepayments, retirements or repurchases, if any, will depend on prevailing market conditions, our liquidity requirements, contractual restrictions and other factors.
We have access to various capital sources, including dividends from our subsidiaries, holding company invested assets, undrawn capacity under our revolving credit facility and access to the debt and equity capital markets. We believe we have, or have access to, adequate liquidity to meet our capital and operating needs, including that which may be required to support the operating needs of our subsidiaries. However, the availability of these sources of capital and the availability and terms of future financings will depend on a variety of factors.
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Cash Flows
Net cash provided by operating activities was $2.1 billion for the nine months ended September 30, 2024 compared to $2.0 billion for the same period of 2023. During the nine months ended September 30, 2023, a payment of $125.1 million was made to complete a retroactive reinsurance transaction to cede our portfolio of policies comprised of liabilities related to our run-off book of United Kingdom motor casualty business.
Net cash used by investing activities was $1.9 billion for the nine months ended September 30, 2024 compared to $1.3 billion for the same period of 2023. During the nine months ended September 30, 2024, net cash used by investing activities included net purchases of fixed maturity securities and equity securities of $1.3 billion and $318.0 million, respectively, and net sales of short term investments of $305.2 million. Net cash used by investing activities in 2024 also included $154.4 million of net cash used for the acquisition of Valor and $167.7 million of cash used to acquire a majority ownership interest in an educational services company, which is accounted for under the equity method. During the nine months ended September 30, 2023, net cash used by investing activities included net purchases of fixed maturity securities and equity securities of $1.3 billion and $268.7 million, respectively, and net sales of short-term investments of $487.8 million. Cash flows from investing activities is affected by various factors such as anticipated payment of claims, financing activity, acquisition opportunities and individual buy and sell decisions made in the normal course of our investment portfolio management.
Net cash provided by financing activities was $65.7 million for the nine months ended September 30, 2024, which included net proceeds of $592.6 million from our May 2024 debt offering, as previously discussed. Net cash used by financing activities was $799.3 million for the nine months ended September 30, 2023, which included a payment of $250 million to retire our 3.625% unsecured senior notes due March 30, 2023. Additionally, financing activities during the nine months ended September 30, 2024 and 2023 reflected borrowings and repayments of debt at certain of our Markel Ventures businesses, primarily on revolving lines of credit. Cash of $389.1 million and $269.6 million was used to repurchase shares of our common stock during the first nine months of 2024 and 2023, respectively.
Critical Accounting Estimates
Critical accounting estimates are those estimates that both are important to the portrayal of our financial condition and results of operations and require us to exercise significant judgment. The preparation of financial statements in accordance with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of material contingent assets and liabilities. These estimates, by necessity, are based on assumptions about numerous factors.
Our critical accounting estimates consist of estimates and assumptions used in determining the reserves for unpaid losses and loss adjustment expenses as well as estimates and assumptions used in the valuation of goodwill and intangible assets. We review the adequacy of reserves for unpaid losses and loss adjustment expenses quarterly. Estimates and assumptions for goodwill and intangible assets are reviewed in conjunction with acquisitions and impairment assessments. Goodwill and indefinite-lived intangible assets are reassessed for impairment at least annually. All intangible assets, including goodwill, are also reviewed for impairment when events or circumstances indicate that their carrying value may not be recoverable. Actual results may differ materially from the estimates and assumptions used in preparing the consolidated financial statements.
Readers are urged to review our 2023 Annual Report on Form 10-K for a more complete description of our critical accounting estimates.
Safe Harbor and Cautionary Statement
This report contains statements concerning or incorporating our expectations, assumptions, plans, objectives, future financial or operating performance and other statements that are not historical facts. These statements are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements may use words such as "anticipate," "believe," "estimate," "expect," "intend," "predict," "project" and similar expressions as they relate to us or our management.
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There are risks and uncertainties that may cause actual results to differ materially from predicted results in forward-looking statements. Factors that may cause actual results to differ are often presented with the forward-looking statements themselves. Additional factors that could cause actual results to differ from those predicted are set forth under "Business," "Risk Factors," "Management's Discussion and Analysis of Financial Condition and Results of Operations" and "Quantitative and Qualitative Disclosures About Market Risk" in our 2023 Annual Report on Form 10-K or under "Management's Discussion and Analysis of Financial Condition and Results of Operations" and "Quantitative and Qualitative Disclosures About Market Risk" in this report, or are included in the items listed below:
•the effect of cyclical trends or changes in market conditions on our Insurance, Investments and Markel Ventures operations, including demand and pricing in the markets in which we operate;
•actions by competitors, including the use of technology and innovation to simplify the customer experience, increase efficiencies, redesign products, alter models and effect other potentially disruptive changes in the insurance industry, and the effect of competition on market trends and pricing;
•our efforts to develop new products, expand in targeted markets or improve business processes and workflows may not be successful and may increase or create new risks (e.g., insufficient demand, change to risk exposures, distribution channel conflicts, execution risk, regulatory risk, increased expenditures);
•the frequency and severity of man-made, health-related and natural catastrophes may exceed expectations, are unpredictable and, in the case of some natural catastrophes, may be exacerbated by changing conditions in the climate, oceans and atmosphere, resulting in increased frequency and/or severity of extreme weather-related events;
•we offer insurance and reinsurance coverage against terrorist acts in connection with some of our programs, and in other instances we are legally required to offer terrorism insurance; in both circumstances, we actively manage our exposure, but if there is a covered terrorist attack, we could sustain material losses;
•emerging claim and coverage issues, changing industry practices and evolving legal, judicial, social and other claims and coverage trends or conditions, can increase the scope of coverage, the frequency and severity of claims and the period over which claims may be reported; these factors, as well as uncertainties in the loss estimation process, can adversely impact the adequacy of our loss reserves and our allowance for reinsurance recoverables;
•reinsurance reserves are subject to greater uncertainty than insurance reserves, primarily because of reliance upon the original underwriting decisions made by ceding companies and the longer lapse of time from the occurrence of loss events to their reporting to the reinsurer for ultimate resolution;
•inaccuracies (whether due to data error, human error or otherwise) in the various modeling techniques and data analytics (e.g., scenarios, predictive and stochastic modeling, and forecasting) we use to analyze and estimate exposures, loss trends and other risks associated with our insurance and insurance-linked securities businesses could cause us to misprice our products or fail to appropriately estimate the risks to which we are exposed;
•changes in the assumptions and estimates used in establishing reserves for our life and annuity reinsurance book (which is in runoff), for example, changes in assumptions and estimates of mortality, longevity, morbidity and interest rates, could result in material changes in our estimated loss reserves for that business;
•adverse developments in insurance coverage litigation or other legal or administrative proceedings could result in material increases in our estimates of loss reserves;
•initial estimates for catastrophe losses and other significant, infrequent events are often based on limited information, are dependent on broad assumptions about the nature and extent of losses, coverage, liability and reinsurance, and those losses may ultimately differ materially from our expectations;
•changes in the availability, costs, quality and providers of reinsurance coverage, which may impact our ability to write, or continue to write, certain lines of business or to mitigate the volatility of losses on our results of operations and financial condition;
•the ability or willingness of reinsurers to pay balances due may be adversely affected by industry and economic conditions, deterioration in reinsurer credit quality and coverage disputes, and collateral we hold, if any, may not be sufficient to cover a reinsurer's obligation to us;
•after the commutation of ceded reinsurance contracts, any subsequent adverse development in the re-assumed loss reserves will result in a charge to earnings;
•regulatory actions can impede our ability to charge adequate rates and efficiently allocate capital;
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•general economic and market conditions and industry specific conditions, including: extended economic recessions or expansions; prolonged periods of slow economic growth; inflation or deflation; fluctuations in foreign currency exchange rates, commodity and energy prices and interest rates; volatility in the credit and capital markets; and other factors;
•economic conditions, actual or potential defaults in corporate bonds, municipal bonds, mortgage-backed securities or sovereign debt obligations, volatility in interest and foreign currency exchange rates, changes in U.S. government debt ratings and changes in market value of concentrated investments can have a significant impact on the fair value of our fixed maturity securities and equity securities, as well as the carrying value of our other assets and liabilities, and this impact may be heightened by market volatility and our ability to mitigate our sensitivity to these changing conditions;
•economic conditions may adversely affect our access to capital and credit markets;
•the effects of government intervention, including material changes in the monetary policies of central banks, to address financial downturns, inflation and other economic and currency concerns;
•the impacts that political and civil unrest and regional conflicts may have on our businesses and the markets they serve or that any disruptions in regional or worldwide economic conditions generally arising from these situations may have on our businesses, industries or investments;
•the impacts of liability, transition and physical risks associated with climate change;
•the significant volatility, uncertainty and disruption caused by health epidemics and pandemics, as well as governmental, legislative, judicial or regulatory actions or developments in response thereto;
•changes in U.S. tax laws, regulations or interpretations, or in the tax laws, regulations or interpretations of other jurisdictions in which we operate, and adjustments we may make in our operations or tax strategies in response to those changes;
•a failure or security breach of, or cyberattack on, enterprise information technology systems that we, or third parties who perform certain functions for us, use or a failure to comply with data protection or privacy regulations;
•third-party providers may perform poorly, breach their obligations to us or expose us to enhanced risks;
•our acquisitions may increase our operational and internal control risks for a period of time;
•we may not realize the contemplated benefits, including cost savings and synergies, of our acquisitions;
•any determination requiring the write-off of a significant portion of our goodwill and intangible assets;
•the failure or inadequacy of any methods we employ to manage our loss exposures;
•the loss of services of any senior executive or other key personnel, or an inability to attract and retain qualified personnel, for our businesses could adversely impact one or more of our operations;
•the manner in which we manage our global operations through a network of business entities could result in inconsistent management, governance and oversight practices and make it difficult for us to implement strategic decisions and coordinate procedures;
•our substantial international operations and investments expose us to increased political, civil, operational and economic risks, including foreign currency exchange rate and credit risk;
•our ability to obtain additional capital for our operations on terms favorable to us;
•the compliance, or failure to comply, with covenants and other requirements under our credit facilities, senior debt and other indebtedness and our preferred shares;
•our ability to maintain or raise third-party capital for existing or new investment vehicles and risks related to our management of third-party capital;
•the effectiveness of our procedures for compliance with existing and future guidelines, policies and legal and regulatory standards, rules, laws and regulations;
•the impact of economic and trade sanctions and embargo programs on our businesses, including instances in which the requirements and limitations applicable to the global operations of U.S. companies and their affiliates are more restrictive than, or conflict with, those applicable to non-U.S. companies and their affiliates;
•regulatory changes, or challenges by regulators, regarding the use of certain issuing carrier or fronting arrangements;
•our dependence on a limited number of brokers for a large portion of our revenues and third-party capital;
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•adverse changes in our assigned financial strength, debt or preferred share ratings or outlook could adversely impact us, including our ability to attract and retain business, the amount of capital our insurance subsidiaries must hold and the availability and cost of capital;
•changes in the amount of statutory capital our insurance subsidiaries are required to hold, which can vary significantly and is based on many factors, some of which are outside our control;
•losses from litigation and regulatory investigations and actions; and
•a number of additional factors may adversely affect our Markel Ventures businesses, and the markets they serve, and negatively impact their revenues and profitability, including, among others: adverse weather conditions, plant disease and other contaminants; changes in government support for education, healthcare and infrastructure projects; changes in capital spending levels; changes in the housing, commercial and industrial construction markets; liability for environmental matters; supply chain and shipping issues, including increases in freight costs; volatility in the market prices for their products; and volatility in commodity, wholesale and raw materials prices and interest and foreign currency exchange rates.
Results from our Insurance, Investments and Markel Ventures operations have been and will continue to be potentially materially affected by these factors.
By making forward-looking statements, we do not intend to become obligated to publicly update or revise any such statements whether as a result of new information, future events or other changes. Readers are cautioned not to place undue reliance on any forward-looking statements, which are based on our current knowledge and speak only as at their dates.
Item 3. Quantitative and Qualitative Disclosures About Market Risk
Market risk is the risk of economic losses due to adverse changes in the estimated fair value of a financial instrument as the result of changes in equity prices, interest rates, foreign currency exchange rates and commodity prices. Our consolidated balance sheets include assets and liabilities with estimated fair values that are subject to market risk. Our primary market risks are equity price risk associated with investments in equity securities, interest rate risk associated with investments in fixed maturity securities and foreign currency exchange rate risk associated with our international operations. During the nine months ended September 30, 2024, there were no material changes in our market risk exposures from those described in our 2023 Annual Report on Form 10-K.
Credit Risk
Credit risk, which is not considered a market risk, is the risk that an entity becomes unable or unwilling to fulfill its obligations to us. Our primary credit risks are the credit risk within our fixed maturity portfolio and the credit risk related to our reinsurance recoverables within our underwriting, program services and other fronting operations. During the nine months ended September 30, 2024, there were no material changes in our credit risk exposures from those described in our 2023 Annual Report on Form 10-K.
Item 4. Controls and Procedures
Evaluation of Disclosure Controls and Procedures
As of the end of the period covered by this quarterly report, we evaluated the effectiveness of the design and operation of our disclosure controls and procedures (Disclosure Controls), as defined under Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934 (Exchange Act). This evaluation was conducted under the supervision and with the participation of our management, including the Principal Executive Officer (PEO) and the Principal Financial Officer (PFO).
Based upon this evaluation, the PEO and PFO concluded that effective Disclosure Controls were in place to ensure that the information required to be disclosed in reports we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms.
Changes in Internal Control over Financial Reporting
During the third quarter of 2024, we implemented a new data warehousing and reporting system at our international insurance operations. The new system allows for improved performance and provides scalability for future growth. Throughout the transition and upon implementation of the new system, we evaluated the impact of the new system on our internal control over financial reporting and added new controls or made updates to controls as necessary.
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There were no other changes in our internal control over financial reporting during the third quarter of 2024 that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
PART II. OTHER INFORMATION
Item 1. Legal Proceedings
For information regarding legal proceedings that were terminated in the second quarter of 2024, see Item 3 Legal Proceedings in our 2023 Annual Report on Form 10-K and Part II Item 1 Legal Proceedings in our Quarterly Reports on Form 10-Q for the quarters ended March 31, 2024 and June 30, 2024.
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
The following table summarizes our common share repurchases for the quarter ended September 30, 2024.

Issuer Purchases of Equity Securities
| (a) |  | (b) |  | (c) |  | (d)
Period | Total Number of Shares Purchased |  | Average Price Paid per Share |  | Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs(1) |  | Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs (in thousands)
July 1, 2024 through July 31, 2024 | 24,030 |  |  | $ | 1,579.13 |  |  | 24,030 |  |  | $ | 418,237 |
August 1, 2024 through August 31, 2024 | 30,240 |  |  | $ | 1,547.34 |  |  | 30,240 |  |  | $ | 371,446 |
September 1, 2024 through September 30, 2024 | 25,200 |  |  | $ | 1,561.41 |  |  | 25,200 |  |  | $ | 332,098 |
Total | 79,470 |  |  | $ | 1,561.42 |  |  | 79,470 |  |  | $ | 332,098 |

(1) The Board of Directors approved the repurchase of up to $750 million of our common shares pursuant to a share repurchase program publicly announced in November 2023. Under our share repurchase program, we may repurchase outstanding common shares of our stock from time to time in privately negotiated or open market transactions, including under plans complying with Rule 10b5-1 and Rule 10b-18 under the Exchange Act. The share repurchase program has no expiration date but may be terminated by the Board at any time.
Item 5. Other Information
Adoption or Termination of Trading Arrangements by Directors or Officers
During the Company's quarterly period ended September 30, 2024, no director or officer (as defined in Exchange Act Rule 16a-1(f)) of the Company adopted or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement" as defined in Regulation S-K Item 408.
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Item 6. Exhibits

Exhibit No. | Document Description
3.1(a) | Amended and Restated Articles of Incorporation (incorporated by reference from Exhibit 3.1 in the Registrant's report on Form 8-K filed with the Commission May 13, 2011)
3.1(b) | Articles of Amendment to the Amended and Restated Articles of Incorporation (incorporated by reference from Exhibit 3.1 in the Registrant's report on Form 8-K filed with the Commission May 27, 2020)
3.1(c) | Articles of Amendment to the Amended and Restated Articles of Incorporation (incorporated by reference from Exhibit 3.1 in the Registrant's report on Form 8-K filed with the Commission May 16, 2023)
3.2 | Bylaws, as amended and restated May 26, 2023 (incorporated by reference from Exhibit 3.2 in the Registrant's report on Form 10-Q filed with the Commission for the quarter ended March 31, 2023)
4.1(a) | Indenture dated as of June 5, 2001, between Markel Corporation and The Chase Manhattan Bank, as Trustee (incorporated by reference from Exhibit 4.1 in the Registrant's report on Form 8-K filed with the Commission June 5, 2001)
4.1(b) | Form of Third Supplemental Indenture dated as of August 13, 2004, between Markel Corporation and JPMorgan Chase Bank (formerly known as The Chase Manhattan Bank), as Trustee, including form of the securities as Exhibit A (incorporated by reference from Exhibit 4.2 in the Registrant's report on Form 8-K filed with the Commission August 11, 2004)
4.1(c) | Form of Ninth Supplemental Indenture dated as of March 8, 2013, between Markel Corporation and The Bank of New York Mellon (as successor to The Chase Manhattan Bank), as Trustee, including form of the securities as Exhibit A (incorporated by reference from Exhibit 4.3 in the Registrant's report on Form 8-K filed with the Commission March 7, 2013)
4.1(d) | Form of Tenth Supplemental Indenture dated as of April 5, 2016, between Markel Corporation and The Bank of New York Mellon (as successor to The Chase Manhattan Bank), as Trustee, including form of the securities as Exhibit A (incorporated by reference from Exhibit 4.2 in the Registrant's report on Form 8-K filed with the Commission March 31, 2016)
4.1(e) | Eleventh Supplemental Indenture dated as of November 2, 2017, between Markel Corporation and The Bank of New York Mellon (as successor to The Chase Manhattan Bank), as Trustee, including form of the securities as Exhibit A (incorporated by reference from Exhibit 4.2 in the Registrant's report on Form 8-K filed with the Commission November 2, 2017)
4.1(f) | Twelfth Supplemental Indenture dated as of November 2, 2017, between Markel Corporation and The Bank of New York Mellon (as successor to The Chase Manhattan Bank), as Trustee, including form of the securities as Exhibit A (incorporated by reference from Exhibit 4.3 in the Registrant's report on Form 8-K filed with the Commission November 2, 2017)
4.1(g) | Thirteenth Supplemental Indenture, dated as of May 20, 2019, between Markel Corporation and The Bank of New York Mellon (as successor to The Chase Manhattan Bank), as Trustee, including form of the securities as Exhibit A (incorporated by reference from Exhibit 4.2 in the Registrant's report on Form 8-K filed with the Commission May 20, 2019)
4.1(h) | Fourteenth Supplemental Indenture, dated as of September 17, 2019, between Markel Corporation and The Bank of New York Mellon (as successor to The Chase Manhattan Bank), as Trustee, including form of the securities as Exhibit A (incorporated by reference from Exhibit 4.2 in the Registrant's report on Form 8-K filed with the Commission September 17, 2019)
4.1(i) | Fifteenth Supplemental Indenture, dated as of September 17, 2019, between Markel Corporation and The Bank of New York Mellon (as successor to The Chase Manhattan Bank), as Trustee, including form of the securities as Exhibit A (incorporated by reference from Exhibit 4.3 in the Registrant's report on Form 8-K filed with the Commission September 17, 2019)
4.1(j) | Sixteenth Supplemental Indenture, dated as of May 7, 2021, between Markel Corporation and The Bank of New York Mellon (as successor to The Chase Manhattan Bank), as Trustee, including form of the securities as Exhibit A (incorporated by reference from Exhibit 4.2 in the Registrant's report on Form 8-K filed with the Commission May 7, 2021)
4.1(k) | Seventeenth Supplemental Indenture, dated as of May 16, 2024, between Markel Group Inc. and The Bank of New York Mellon (as successor to The Chase Manhattan Bank), as Trustee, including form of the securities as Exhibit A (incorporated by reference from Exhibit 4.2 in the Registrant's report on Form 8-K filed with the Commission May 16, 2024)

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The registrant hereby agrees to furnish to the Securities and Exchange Commission, upon request, a copy of all other instruments defining the rights of holders of long-term debt of the registrant and its subsidiaries.
31.1 | Certification of Principal Executive Officer Pursuant to Rule 13a-14(a)/15d-14(a)*
31.2 | Certification of Principal Financial Officer Pursuant to Rule 13a-14(a)/15d-14(a)*
32.1 | Certification furnished Pursuant to 18 U.S.C. Section 1350*
101 | The following consolidated financial statements from Markel Group Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2024, filed on October 30, 2024, formatted in Inline XBRL: (i) Consolidated Balance Sheets, (ii) Consolidated Statements of Income and Comprehensive Income (Loss), (iii) Consolidated Statements of Changes in Equity, (iv) Condensed Consolidated Statements of Cash Flows and (v) Notes to Consolidated Financial Statements.*
104 | Cover Page Interactive Data File (embedded within the Inline XBRL document)

* Filed with this report
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Signatures
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, this 30 th day of October 2024.

| Markel Group Inc.
| By: | /s/ Thomas S. Gayner
|  | Thomas S. Gayner
|  | Chief Executive Officer
|  | (Principal Executive Officer)
| By: | /s/ Brian J. Costanzo
|  | Brian J. Costanzo
|  | Chief Financial Officer
|  | (Principal Financial Officer)

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