Annual report [Section 13 and 15(d), not S-K Item 405]

INVESTMENT SECURITIES - Schedule of trading and available-for-sale securities (Details)

v3.25.1
INVESTMENT SECURITIES - Schedule of trading and available-for-sale securities (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Mar. 31, 2024
Debt and Equity Securities, FV-NI [Line Items]    
Total trading securities $ 2,275,286 $ 3,688,620
Total available-for-sale securities, at fair value 473,587 216,621
Total 65,860 0
Total investment securities 2,814,733 3,905,241
Non-US sovereign debt    
Debt and Equity Securities, FV-NI [Line Items]    
Total trading securities 1,282,450 2,409,126
Total available-for-sale securities, at fair value 208,231 27,016
Non-US sovereign debt 65,914 0
Allowance for Non-US sovereign debt (54) 0
Total 65,860  
Corporate debt    
Debt and Equity Securities, FV-NI [Line Items]    
Total trading securities 807,985 1,108,870
Total available-for-sale securities, at fair value 243,730 173,568
Corporate equity    
Debt and Equity Securities, FV-NI [Line Items]    
Total trading securities 106,227 126,103
US sovereign debt    
Debt and Equity Securities, FV-NI [Line Items]    
Total trading securities 73,787 43,173
Total available-for-sale securities, at fair value 21,626 16,037
Exchange traded notes    
Debt and Equity Securities, FV-NI [Line Items]    
Total trading securities $ 4,837 $ 1,348