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INVESTMENT SECURITIES AND OTHER SECURITIES | 9 Months Ended
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Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract] |
INVESTMENT SECURITIES AND OTHER SECURITIES | INVESTMENT SECURITIES AND OTHER SECURITIES Debt securities purchased in which Huntington has the intent and ability to hold to their maturity are classified as held-to-maturity securities. All other debt and equity securities are classified as either available-for-sale or other securities. The following tables provide amortized cost, fair value, and gross unrealized gains and losses by investment category.
|  |  | Unrealized |  |
(dollar amounts in millions) | Amortized Cost (1)(2) |  | Gross Gains |  | Gross Losses |  | Fair Value
At September 30, 2025 |  |  |  |  |  |  |
Available-for-sale securities: |  |  |  |  |  |  |
U.S. Treasury | $ | 5,371 |  |  | $ | 42 |  |  | $ | (3) |  |  | $ | 5,410 |
Federal agencies: |  |  |  |  |  |  |
Residential MBS | 11,133 |  |  | 3 |  |  | (1,461) |  |  | 9,675 |
Residential CMO | 4,761 |  |  | 5 |  |  | (324) |  |  | 4,442 |
Commercial MBS | 2,445 |  |  | — |  |  | (663) |  |  | 1,782 |
Other agencies | 116 |  |  | — |  |  | (3) |  |  | 113 |
Total U.S. Treasury, federal agency, and other agency securities | 23,826 |  |  | 50 |  |  | (2,454) |  |  | 21,422 |
Municipal securities | 4,194 |  |  | 8 |  |  | (87) |  |  | 4,115 |
Corporate debt | 192 |  |  | — |  |  | (17) |  |  | 175 |
Asset-backed securities | 269 |  |  | — |  |  | (10) |  |  | 259 |
Private-label CMO | 111 |  |  | — |  |  | (7) |  |  | 104 |
Other securities/sovereign debt | 10 |  |  | — |  |  | — |  |  | 10 |
Total available-for-sale securities | $ | 28,602 |  |  | $ | 58 |  |  | $ | (2,575) |  |  | $ | 26,085 |
Held-to-maturity securities: |  |  |  |  |  |  |
U.S. Treasury | $ | 2,339 |  |  | $ | 16 |  |  | $ | (1) |  |  | $ | 2,354 |
Federal agencies: |  |  |  |  |  |  |
Residential MBS | 7,919 |  |  | — |  |  | (1,005) |  |  | 6,914 |
Residential CMO | 3,971 |  |  | 4 |  |  | (543) |  |  | 3,432 |
Commercial MBS | 1,314 |  |  | — |  |  | (196) |  |  | 1,118 |
Other agencies | 53 |  |  | — |  |  | (3) |  |  | 50 |
Total U.S. Treasury, federal agency, and other agency securities | 15,596 |  |  | 20 |  |  | (1,748) |  |  | 13,868 |
Municipal securities | 1 |  |  | — |  |  | — |  |  | 1 |
Total held-to-maturity securities | $ | 15,597 |  |  | $ | 20 |  |  | $ | (1,748) |  |  | $ | 13,869 |
Other securities, at cost: |  |  |  |  |  |  |
Non-marketable equity securities: |  |  |  |  |  |  |
FRB stock | $ | 575 |  |  | $ | — |  |  | $ | — |  |  | $ | 575 |
FHLB stock | 237 |  |  | — |  |  | — |  |  | 237 |
Other non-marketable equity securities | 26 |  |  | — |  |  | — |  |  | 26 |
Other securities, at fair value: |  |  |  |  |  |  |
Mutual funds | 30 |  |  | — |  |  | — |  |  | 30 |
Equity securities | 2 |  |  | — |  |  | — |  |  | 2 |
Total other securities | $ | 870 |  |  | $ | — |  |  | $ | — |  |  | $ | 870 |
(1)Amortized cost amounts exclude accrued interest receivable, which is recorded within accrued income and other receivables on the Unaudited Consolidated Balance Sheet s. At September 30, 2025, accrued interest receivable on AFS securities and HTM securities totaled $89 million and $41 million, respectively. (2)Excluded from the amortized cost are portfolio level basis adjustments for securities designated in fair value hedges under the portfolio layer method. The basis adjustments totaled $160 million and represent a reduction to the amortized cost of the securities being hedged. The securities being hedged under the portfolio layer method are primarily Residential CMO and Residential MBS securities.
|  |  | Unrealized |  |
(dollar amounts in millions) | Amortized Cost (1)(2) |  | Gross Gains |  | Gross Losses |  | Fair Value
At December 31, 2024 |  |  |  |  |  |  |
Available-for-sale securities: |  |  |  |  |  |  |
U.S. Treasury | $ | 6,588 |  |  | $ | 11 |  |  | $ | (43) |  |  | $ | 6,556 |
Federal agencies: |  |  |  |  |  |  |
Residential MBS | 11,988 |  |  | — |  |  | (1,971) |  |  | 10,017 |
Residential CMO | 3,778 |  |  | 1 |  |  | (434) |  |  | 3,345 |
Commercial MBS | 2,519 |  |  | — |  |  | (767) |  |  | 1,752 |
Other agencies | 135 |  |  | — |  |  | (5) |  |  | 130 |
Total U.S. Treasury, federal agency, and other agency securities | 25,008 |  |  | 12 |  |  | (3,220) |  |  | 21,800 |
Municipal securities | 4,119 |  |  | 1 |  |  | (132) |  |  | 3,988 |
Corporate debt | 1,157 |  |  | — |  |  | (102) |  |  | 1,055 |
Asset-backed securities | 330 |  |  | — |  |  | (19) |  |  | 311 |
Private-label CMO | 119 |  |  | — |  |  | (10) |  |  | 109 |
Other securities/sovereign debt | 10 |  |  | — |  |  | — |  |  | 10 |
Total available-for-sale securities | $ | 30,743 |  |  | $ | 13 |  |  | $ | (3,483) |  |  | $ | 27,273 |
Held-to-maturity securities: |  |  |  |  |  |  |
U.S. Treasury | $ | 2,045 |  |  | $ | — |  |  | $ | (22) |  |  | $ | 2,023 |
Federal agencies: |  |  |  |  |  |  |
Residential MBS | 8,533 |  |  | — |  |  | (1,336) |  |  | 7,197 |
Residential CMO | 4,309 |  |  | 3 |  |  | (691) |  |  | 3,621 |
Commercial MBS | 1,407 |  |  | — |  |  | (231) |  |  | 1,176 |
Other agencies | 73 |  |  | — |  |  | (5) |  |  | 68 |
Total U.S. Treasury, federal agency, and other agency securities | 16,367 |  |  | 3 |  |  | (2,285) |  |  | 14,085 |
Municipal securities | 1 |  |  | — |  |  | — |  |  | 1 |
Total held-to-maturity securities | $ | 16,368 |  |  | $ | 3 |  |  | $ | (2,285) |  |  | $ | 14,086 |
Other securities, at cost: |  |  |  |  |  |  |
Non-marketable equity securities: |  |  |  |  |  |  |
FRB stock | $ | 521 |  |  | $ | — |  |  | $ | — |  |  | $ | 521 |
FHLB stock | 246 |  |  | — |  |  | — |  |  | 246 |
Other non-marketable equity securities | 25 |  |  | — |  |  | — |  |  | 25 |
Other securities, at fair value: |  |  |  |  |  |  |
Mutual funds | 29 |  |  | — |  |  | — |  |  | 29 |
Equity securities | 1 |  |  | 1 |  |  | — |  |  | 2 |
Total other securities | $ | 822 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 823 |
(1)Amortized cost amounts exclude accrued interest receivable, which is recorded within accrued income and other receivables on the Unaudited Consolidated Balance Sheet s. At December 31, 2024, accrued interest receivable on AFS securities and HTM securities totaled $89 million and $46 million, respectively. (2)Excluded from the amortized cost are portfolio level basis adjustments for securities designated in fair value hedges under the portfolio layer method. The basis adjustments totaled $458 million and represent a reduction to the amortized cost of the securities being hedged. The securities being hedged under the portfolio layer method are primarily Residential CMO and Residential MBS securities. The following table provides the amortized cost and fair value of securities by contractual maturity. Expected maturities may differ from contractual maturities as issuers may have the right to call or prepay obligations with or without incurring penalties.
| At September 30, 2025 |  | At December 31, 2024
(dollar amounts in millions) | Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Available-for-sale securities: |  |  |  |  |  |  |
Under 1 year | $ | 2,101 |  |  | $ | 2,096 |  |  | $ | 3,620 |  |  | $ | 3,624 |
After 1 year through 5 years | 5,628 |  |  | 5,637 |  |  | 5,993 |  |  | 5,844 |
After 5 years through 10 years | 1,921 |  |  | 1,796 |  |  | 1,857 |  |  | 1,732 |
After 10 years | 18,952 |  |  | 16,556 |  |  | 19,273 |  |  | 16,073 |
Total available-for-sale securities | $ | 28,602 |  |  | $ | 26,085 |  |  | $ | 30,743 |  |  | $ | 27,273 |
Held-to-maturity securities: |  |  |  |  |  |  |
Under 1 year | $ | 404 |  |  | $ | 404 |  |  | $ | 255 |  |  | $ | 256 |
After 1 year through 5 years | 1,967 |  |  | 1,981 |  |  | 1,818 |  |  | 1,796 |
After 5 years through 10 years | 146 |  |  | 134 |  |  | 65 |  |  | 60 |
After 10 years | 13,080 |  |  | 11,350 |  |  | 14,230 |  |  | 11,974 |
Total held-to-maturity securities | $ | 15,597 |  |  | $ | 13,869 |  |  | $ | 16,368 |  |  | $ | 14,086 |
The following tables provide detail on investment securities with unrealized losses aggregated by investment category and the length of time the individual securities have been in a continuous loss position.
| Less than 12 Months |  | Over 12 Months |  | Total
(dollar amounts in millions) | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
At September 30, 2025 |  |  |  |  |  |  |  |  |  |  |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury | $ | 98 |  |  | $ | (1) |  |  | $ | 798 |  |  | $ | (2) |  |  | $ | 896 |  |  | $ | (3) |
Federal agencies: |  |  |  |  |  |  |  |  |  |  |
Residential MBS | 15 |  |  | — |  |  | 9,356 |  |  | (1,461) |  |  | 9,371 |  |  | (1,461) |
Residential CMO | 218 |  |  | — |  |  | 2,692 |  |  | (324) |  |  | 2,910 |  |  | (324) |
Commercial MBS | — |  |  | — |  |  | 1,782 |  |  | (663) |  |  | 1,782 |  |  | (663) |
Other agencies | 29 |  |  | — |  |  | 65 |  |  | (3) |  |  | 94 |  |  | (3) |
Total U.S. Treasury, federal agency, and other agency securities | 360 |  |  | (1) |  |  | 14,693 |  |  | (2,453) |  |  | 15,053 |  |  | (2,454) |
Municipal securities | 862 |  |  | (12) |  |  | 2,167 |  |  | (75) |  |  | 3,029 |  |  | (87) |
Corporate debt | — |  |  | — |  |  | 175 |  |  | (17) |  |  | 175 |  |  | (17) |
Asset-backed securities | — |  |  | — |  |  | 254 |  |  | (10) |  |  | 254 |  |  | (10) |
Private-label CMO | — |  |  | — |  |  | 81 |  |  | (7) |  |  | 81 |  |  | (7) |
Total temporarily impaired available-for-sale securities | $ | 1,222 |  |  | $ | (13) |  |  | $ | 17,370 |  |  | $ | (2,562) |  |  | $ | 18,592 |  |  | $ | (2,575) |
Held-to-maturity securities: |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury | $ | 94 |  |  | $ | — |  |  | $ | 362 |  |  | $ | (1) |  |  | $ | 456 |  |  | $ | (1) |
Federal agencies: |  |  |  |  |  |  |  |  |  |  |
Residential MBS | 45 |  |  | (1) |  |  | 6,822 |  |  | (1,004) |  |  | 6,867 |  |  | (1,005) |
Residential CMO | 50 |  |  | — |  |  | 3,019 |  |  | (543) |  |  | 3,069 |  |  | (543) |
Commercial MBS | — |  |  | — |  |  | 1,117 |  |  | (196) |  |  | 1,117 |  |  | (196) |
Other agencies | — |  |  | — |  |  | 50 |  |  | (3) |  |  | 50 |  |  | (3) |
Total U.S. Treasury, federal agency, and other agency securities | 189 |  |  | (1) |  |  | 11,370 |  |  | (1,747) |  |  | 11,559 |  |  | (1,748) |
Municipal securities | — |  |  | — |  |  | 1 |  |  | — |  |  | 1 |  |  | — |
Total temporarily impaired held-to-maturity securities | $ | 189 |  |  | $ | (1) |  |  | $ | 11,371 |  |  | $ | (1,747) |  |  | $ | 11,560 |  |  | $ | (1,748) |
| Less than 12 Months |  | Over 12 Months |  | Total
(dollar amounts in millions) | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
At December 31, 2024 |  |  |  |  |  |  |  |  |  |  |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury | $ | 3,153 |  |  | $ | (43) |  |  | $ | — |  |  | $ | — |  |  | $ | 3,153 |  |  | $ | (43) |
Federal agencies: |  |  |  |  |  |  |  |  |  |  |
Residential MBS | 275 |  |  | (5) |  |  | 9,676 |  |  | (1,966) |  |  | 9,951 |  |  | (1,971) |
Residential CMO | 243 |  |  | (1) |  |  | 2,802 |  |  | (433) |  |  | 3,045 |  |  | (434) |
Commercial MBS | — |  |  | — |  |  | 1,752 |  |  | (767) |  |  | 1,752 |  |  | (767) |
Other agencies | 21 |  |  | — |  |  | 69 |  |  | (5) |  |  | 90 |  |  | (5) |
Total U.S. Treasury, federal agency, and other agency securities | 3,692 |  |  | (49) |  |  | 14,299 |  |  | (3,171) |  |  | 17,991 |  |  | (3,220) |
Municipal securities | 985 |  |  | (25) |  |  | 2,336 |  |  | (107) |  |  | 3,321 |  |  | (132) |
Corporate debt | — |  |  | — |  |  | 1,053 |  |  | (102) |  |  | 1,053 |  |  | (102) |
Asset-backed securities | 49 |  |  | — |  |  | 263 |  |  | (19) |  |  | 312 |  |  | (19) |
Private-label CMO | — |  |  | — |  |  | 87 |  |  | (10) |  |  | 87 |  |  | (10) |
Total temporarily impaired available-for-sale securities | $ | 4,726 |  |  | $ | (74) |  |  | $ | 18,038 |  |  | $ | (3,409) |  |  | $ | 22,764 |  |  | $ | (3,483) |
Held-to-maturity securities: |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury | $ | 1,581 |  |  | $ | (22) |  |  | $ | — |  |  | $ | — |  |  | $ | 1,581 |  |  | $ | (22) |
Federal agencies: |  |  |  |  |  |  |  |  |  |  |
Residential MBS | 99 |  |  | (2) |  |  | 7,097 |  |  | (1,334) |  |  | 7,196 |  |  | (1,336) |
Residential CMO | 163 |  |  | (1) |  |  | 3,152 |  |  | (690) |  |  | 3,315 |  |  | (691) |
Commercial MBS | — |  |  | — |  |  | 1,176 |  |  | (231) |  |  | 1,176 |  |  | (231) |
Other agencies | — |  |  | — |  |  | 69 |  |  | (5) |  |  | 69 |  |  | (5) |
Total U.S. Treasury, federal agency, and other agency securities | 1,843 |  |  | (25) |  |  | 11,494 |  |  | (2,260) |  |  | 13,337 |  |  | (2,285) |
Municipal securities | — |  |  | — |  |  | 1 |  |  | — |  |  | 1 |  |  | — |
Total temporarily impaired held-to-maturity securities | $ | 1,843 |  |  | $ | (25) |  |  | $ | 11,495 |  |  | $ | (2,260) |  |  | $ | 13,338 |  |  | $ | (2,285) |
At September 30, 2025 and December 31, 2024, the carrying value of investment securities pledged to secure public and trust deposits, trading account liabilities, U.S. Treasury demand notes, and security repurchase agreements, and to support borrowing capacity, totaled $30.8 billion and $37.7 billion, respectively. There were no securities of a single issuer, which were not governmental or government-sponsored, that exceeded 10% of shareholders’ equity at either September 30, 2025 or December 31, 2024. At September 30, 2025, substantially all HTM debt securities are comprised of securities issued by government sponsored entities or are explicitly guaranteed by the U.S. government. In addition, there were no HTM debt securities considered past due at September 30, 2025. Based on an evaluation of available information including security type, counterparty credit quality, past events, current conditions, and reasonable and supportable forecasts that are relevant to collectability of cash flows, as of September 30, 2025, Huntington has concluded that, except for one municipal bond classified as an AFS debt security for which $2 million of write-downs were recognized during 2024, it expects to receive all contractual cash flows from each security held in its AFS and HTM debt securities portfolio. Huntington recognized a $3 million recovery during the first quarter of 2025 related to one AFS municipal security that had previously been written down. There was no allowance related to securities as of September 30, 2025 or December 31, 2024.

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