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SECURITIES - Summary of Residential Securities and CMBS (Details) $ in Thousands | 6 Months Ended
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Jun. 30, 2025 USD ($)
Debt Securities, Available-For-Sale [Roll Forward] |  |
Beginning balance January 1, 2025 | $ 69,756,447 | [1],[2]
Purchases | 14,792,221 |
Sales | (8,498,108) |
Principal paydowns | (3,816,328) |
(Amortization) / accretion | (85,631) |
Fair value adjustment | 1,352,025 |
Ending balance June 30, 2025 | 73,500,626 | [2]
Agency Securities |  |
Debt Securities, Available-For-Sale [Roll Forward] |  |
Beginning balance January 1, 2025 | 67,434,068 |
Purchases | 14,488,441 |
Sales | (8,141,852) |
Principal paydowns | (3,304,684) |
(Amortization) / accretion | (82,302) |
Fair value adjustment | 1,362,967 |
Ending balance June 30, 2025 | 71,756,638 |
Residential Credit Securities |  |
Debt Securities, Available-For-Sale [Roll Forward] |  |
Beginning balance January 1, 2025 | 2,248,101 |
Purchases | 303,780 |
Sales | (314,442) |
Principal paydowns | (479,193) |
(Amortization) / accretion | (3,249) |
Fair value adjustment | (11,009) |
Ending balance June 30, 2025 | 1,743,988 |
Commercial Securities |  |
Debt Securities, Available-For-Sale [Roll Forward] |  |
Beginning balance January 1, 2025 | 74,278 |
Purchases | 0 |
Sales | (41,814) |
Principal paydowns | (32,451) |
(Amortization) / accretion | (80) |
Fair value adjustment | 67 |
Ending balance June 30, 2025 | $ 0 |
[1] | (1)Derived from the audited consolidated financial statements at December 31, 2024.
[2] | (3)Excludes $2.6 billion and $2.2 billion at June 30, 2025 and December 31, 2024, respectively, of non-Agency mortgage-backed securities in consolidated VIEs pledged as collateral and eliminated from the Company’s Consolidated Statements of Financial Condition.

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