XML 63 R54.htm IDEA: XBRL DOCUMENT v3.23.3
Fair value measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
ASSETS    
Deposits with clearing organizations $ 34,970 $ 24,937
Securities owned:    
Securities owned, at fair value 853,945 498,594
Investments 16,060 7,068
Derivative contracts:    
Derivative contracts, total 154  
Total 905,129 532,361
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 45,577 52,768
Derivative contracts:    
Derivative contracts 2,020 1,805
Total 47,597 54,573
U.S. Treasury securities    
Securities owned:    
Securities owned, at fair value 710,730 362,815
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 12,505 25,006
U.S. Agency securities    
Securities owned:    
Securities owned, at fair value 2 6,012
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value   3
Sovereign obligations    
Securities owned:    
Securities owned, at fair value 261 9,502
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value   9,048
Corporate debt and other obligations    
Securities owned:    
Securities owned, at fair value 23,079 9,844
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 13,799 2,905
Mortgage and other asset-backed securities    
Securities owned:    
Securities owned, at fair value 6,664 1,882
Municipal obligations    
Securities owned:    
Securities owned, at fair value 61,735 30,126
Convertible bonds    
Securities owned:    
Securities owned, at fair value 19,028 21,800
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 8,117 4,428
Corporate equities    
Securities owned:    
Securities owned, at fair value 29,360 24,837
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 11,013 11,378
Money markets    
Securities owned:    
Securities owned, at fair value 373  
Auction rate securities    
Securities owned:    
Securities owned, at fair value 2,713 31,776
TBAs    
Derivative contracts:    
Derivative contracts, total 153 1,762
Derivative contracts:    
Derivative contracts 146 1,761
Futures    
Derivative contracts:    
Derivative contracts, total 1  
Derivative contracts:    
Derivative contracts 1,874 44
Level 1    
ASSETS    
Deposits with clearing organizations 34,970 24,937
Securities owned:    
Securities owned, at fair value 740,090 387,652
Investments 3,976 0
Derivative contracts:    
Derivative contracts, total 1  
Total 779,037 412,589
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 23,518 36,384
Derivative contracts:    
Derivative contracts 1,874 44
Total 25,392 36,428
Level 1 | U.S. Treasury securities    
Securities owned:    
Securities owned, at fair value 710,730 362,815
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 12,505 25,006
Level 1 | U.S. Agency securities    
Securities owned:    
Securities owned, at fair value 0 0
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value   0
Level 1 | Sovereign obligations    
Securities owned:    
Securities owned, at fair value 0 0
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value   0
Level 1 | Corporate debt and other obligations    
Securities owned:    
Securities owned, at fair value 0 0
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 0 0
Level 1 | Mortgage and other asset-backed securities    
Securities owned:    
Securities owned, at fair value 0 0
Level 1 | Municipal obligations    
Securities owned:    
Securities owned, at fair value 0 0
Level 1 | Convertible bonds    
Securities owned:    
Securities owned, at fair value 0 0
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 0 0
Level 1 | Corporate equities    
Securities owned:    
Securities owned, at fair value 29,360 24,837
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 11,013 11,378
Level 1 | Money markets    
Securities owned:    
Securities owned, at fair value 0  
Level 1 | Auction rate securities    
Securities owned:    
Securities owned, at fair value 0 0
Level 1 | TBAs    
Derivative contracts:    
Derivative contracts, total 0 0
Derivative contracts:    
Derivative contracts 0 0
Level 1 | Futures    
Derivative contracts:    
Derivative contracts, total 1  
Derivative contracts:    
Derivative contracts 1,874 44
Level 2    
ASSETS    
Deposits with clearing organizations 0 0
Securities owned:    
Securities owned, at fair value 111,142 79,166
Investments 12,084 7,068
Derivative contracts:    
Derivative contracts, total 153  
Total 123,379 87,996
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 22,059 16,384
Derivative contracts:    
Derivative contracts 146 1,761
Total 22,205 18,145
Level 2 | U.S. Treasury securities    
Securities owned:    
Securities owned, at fair value 0 0
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 0 0
Level 2 | U.S. Agency securities    
Securities owned:    
Securities owned, at fair value 2 6,012
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value   3
Level 2 | Sovereign obligations    
Securities owned:    
Securities owned, at fair value 261 9,502
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value   9,048
Level 2 | Corporate debt and other obligations    
Securities owned:    
Securities owned, at fair value 23,079 9,844
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 13,799 2,905
Level 2 | Mortgage and other asset-backed securities    
Securities owned:    
Securities owned, at fair value 6,664 1,882
Level 2 | Municipal obligations    
Securities owned:    
Securities owned, at fair value 61,735 30,126
Level 2 | Convertible bonds    
Securities owned:    
Securities owned, at fair value 19,028 21,800
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 8,117 4,428
Level 2 | Corporate equities    
Securities owned:    
Securities owned, at fair value 0 0
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 0 0
Level 2 | Money markets    
Securities owned:    
Securities owned, at fair value 373  
Level 2 | Auction rate securities    
Securities owned:    
Securities owned, at fair value 0 0
Level 2 | TBAs    
Derivative contracts:    
Derivative contracts, total 153 1,762
Derivative contracts:    
Derivative contracts 146 1,761
Level 2 | Futures    
Derivative contracts:    
Derivative contracts, total 0  
Derivative contracts:    
Derivative contracts 0 0
Level 3    
ASSETS    
Deposits with clearing organizations 0 0
Securities owned:    
Securities owned, at fair value 2,713 31,776
Investments 0 0
Derivative contracts:    
Derivative contracts, total 0  
Total 2,713 31,776
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 0 0
Derivative contracts:    
Derivative contracts 0 0
Total 0 0
Level 3 | U.S. Treasury securities    
Securities owned:    
Securities owned, at fair value 0 0
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 0 0
Level 3 | U.S. Agency securities    
Securities owned:    
Securities owned, at fair value 0 0
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value   0
Level 3 | Sovereign obligations    
Securities owned:    
Securities owned, at fair value 0 0
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value   0
Level 3 | Corporate debt and other obligations    
Securities owned:    
Securities owned, at fair value 0 0
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 0 0
Level 3 | Mortgage and other asset-backed securities    
Securities owned:    
Securities owned, at fair value 0 0
Level 3 | Municipal obligations    
Securities owned:    
Securities owned, at fair value 0 0
Level 3 | Convertible bonds    
Securities owned:    
Securities owned, at fair value 0 0
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 0 0
Level 3 | Corporate equities    
Securities owned:    
Securities owned, at fair value 0 0
Securities sold but not yet purchased:    
Securities sold but not yet purchased, at fair value 0 0
Level 3 | Money markets    
Securities owned:    
Securities owned, at fair value 0  
Level 3 | Auction rate securities    
Securities owned:    
Securities owned, at fair value 2,713 31,776
Level 3 | TBAs    
Derivative contracts:    
Derivative contracts, total 0 0
Derivative contracts:    
Derivative contracts 0 0
Level 3 | Futures    
Derivative contracts:    
Derivative contracts, total 0  
Derivative contracts:    
Derivative contracts $ 0 $ 0