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SECURITIES - Summary of Residential Securities and CMBS (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2024
USD ($)
Debt Securities, Available-For-Sale [Roll Forward]  
Beginning balance January 1, 2024 $ 69,613,565 [1],[2]
Purchases 14,548,911
Sales (13,381,984)
Principal paydowns (3,049,532)
(Amortization) / accretion (36,702)
Fair value adjustment (649,505)
Ending balance June 30, 2024 67,044,753 [2]
Agency Securities  
Debt Securities, Available-For-Sale [Roll Forward]  
Beginning balance January 1, 2024 66,308,788
Purchases 14,195,878
Sales (12,543,493)
Principal paydowns (2,781,021)
(Amortization) / accretion (39,917)
Fair value adjustment (749,330)
Ending balance June 30, 2024 64,390,905
Residential Credit Securities  
Debt Securities, Available-For-Sale [Roll Forward]  
Beginning balance January 1, 2024 3,082,333
Purchases 353,033
Sales (731,027)
Principal paydowns (264,073)
(Amortization) / accretion 2,747
Fair value adjustment 98,283
Ending balance June 30, 2024 2,541,296
Commercial Securities  
Debt Securities, Available-For-Sale [Roll Forward]  
Beginning balance January 1, 2024 222,444
Purchases 0
Sales (107,464)
Principal paydowns (4,438)
(Amortization) / accretion 468
Fair value adjustment 1,542
Ending balance June 30, 2024 $ 112,552
[1]
(1)Derived from the audited consolidated financial statements at December 31, 2023.
[2]
(3)Excludes $1.8 billion and $1.5 billion at June 30, 2024 and December 31, 2023, respectively, of non-Agency mortgage-backed securities in consolidated VIEs pledged as collateral and eliminated from the Company’s Consolidated Statements of Financial Condition.