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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | --- | --- | --- | ---
Investments: |  |  |  |  |  |
Fixed income securities, available for sale | $ 4,555,800 | $ 4,122,600 |  | $ 3,788,600 |  |
Fixed income securities, trading at fair value | 1,281,300 | 1,485,700 |  | 1,475,500 |  |
Short-term investments, available for sale | 66,500 | 93,600 |  | 52,000 |  |
Short-term investments, trading at fair value | 3,200 | 2,100 |  | 6,300 |  |
Catastrophe bonds, trading at fair value | 1,000 | 1,600 |  | 2,900 |  |
Privately-held Investments, available for sale | 25,300 | 14,900 |  | 0 |  |
Privately-held Investments, trading | 341,200 | 475,000 |  | 533,000 |  |
Investments, equity method | 8,100 | 7,600 |  | 6,200 |  |
Other investments, at fair value | 204,700 | 209,300 |  | 221,300 |  |
Total investments | 6,487,100 | 6,412,400 |  | 6,085,800 |  |
Cash and cash equivalents |  | 1,028,100 | $ 1,244,900 | 959,200 |  |
Unpaid losses recoverable from reinsurers | 4,431,300 | 4,577,800 | 4,596,700 | 4,897,700 |  |
Ceded unearned premiums | 1,001,000 | 733,500 |  | 737,300 |  |
Underwriting premiums receivables | 1,819,100 | 1,435,300 |  | 1,482,400 |  |
Deferred acquisition costs | 361,000 | 296,200 |  | 319,000 | $ 290,800 |
Derivatives at fair value | 26,000 | 31,700 |  | 56,200 |  |
Right-of-use operating lease assets | 56,000 | 61,600 |  | 72,800 |  |
Income taxes refundable | 14,400 | 4,300 |  | 20,800 |  |
Deferred tax assets | 304,400 | 312,600 |  | 120,100 |  |
Other assets | 337,400 | 309,600 |  | 384,200 |  |
Intangible assets and goodwill | 21,700 | 21,700 |  | 21,800 |  |
Total assets | 16,104,300 | 15,224,800 |  | 15,157,300 |  |
LIABILITIES |  |  |  |  |  |
Losses and loss adjustment expenses | 8,201,300 | 7,810,600 | 7,770,800 | 7,710,900 | 7,611,800 | $ 7,165,300
Unearned premiums | 2,849,800 | 2,426,300 |  | 2,457,500 |  |
Total insurance reserves | 11,051,100 | 10,236,900 |  | 10,168,400 |  |
Reinsurance premiums | 1,309,700 | 1,416,600 |  | 1,980,100 |  |
Income taxes payable | 0 | 12,600 |  | 10,900 |  |
Deferred tax liabilities | 1,600 | 1,600 |  | 900 |  |
Accrued expenses and other payables | 248,400 | 214,400 |  | 201,800 |  |
Payables for securities purchased | 83,000 | 22,300 |  | 6,900 |  |
Operating lease liabilities | 79,600 | 86,100 |  | 95,500 |  |
Derivative liabilities | 7,700 | 25,800 |  | 34,900 |  |
Long-term debt | 300,000 | 300,000 |  | 0 |  |
Total liabilities | 13,081,100 | 12,316,300 |  | 12,799,300 |  |
Commitments and contingent liabilities | 0 | 0 |  | 0 |  |
Ordinary shares: |  |  |  |  |  |
Ordinary shares | 604 | 604 |  | 604 |  |
Preference shares | 753,500 | 753,500 |  | 753,500 |  |
Additional paid in capital | 761,200 | 761,200 |  | 761,200 |  |
Retained earnings | 1,794,900 | 1,793,500 |  | 1,349,000 |  |
Accumulated other comprehensive (loss) | (287,000) | (400,300) | (558,400) | (506,300) | (123,000) |
Total shareholders' equity | 3,023,200 | 2,908,500 | $ 2,535,100 | 2,358,000 | $ 2,774,800 |
Total liabilities and shareholders’ equity | $ 16,104,300 | $ 15,224,800 |  | $ 15,157,300 |  |

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