Quarterly report [Sections 13 or 15(d)]

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

v3.25.2
INVESTMENT SECURITIES - Schedule of trading and available-for-sale securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Mar. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities $ 2,001,392 $ 2,275,286
Total available-for-sale securities, at fair value 492,138 473,587
Total held-to-maturity securities 303,351 65,860
Total investment securities 2,796,881 2,814,733
Non-U.S. sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 1,042,485 1,282,450
Total available-for-sale securities, at fair value 230,572 208,231
Non-U.S. sovereign debt 303,596 65,914
Allowance for Non-US sovereign debt (245) (54)
Total held-to-maturity securities 303,351 65,860
Corporate debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 751,558 807,985
Total available-for-sale securities, at fair value 239,720 243,730
Corporate equity    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 128,316 106,227
U.S. sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities 74,369 73,787
Total available-for-sale securities, at fair value 21,846 21,626
Exchange traded notes and funds    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total trading securities $ 4,664 $ 4,837