Quarterly report pursuant to Section 13 or 15(d)

NET (LOSS)/GAIN ON TRADING SECURITIES - Summary of net gain on trading securities (Details)

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NET (LOSS)/GAIN ON TRADING SECURITIES - Summary of net gain on trading securities (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]        
Net gain/(loss) recognized during the period on trading securities sold during the period $ 9,353 $ (47,801) $ 61,276 $ (26,790)
Net unrealized (loss)/gain recognized during the reporting period on trading securities still held at the reporting date (14,442) 73,257 16,222 65,684
Net (loss)/gain recognized during the period on trading securities $ (5,089) $ 25,456 $ 77,498 $ 38,894