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Statements of Financial Condition (Parenthetical) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Statements of Financial Condition      
Cash and cash equivalents $ 1,565,100,289 $ 2,585,466,700 $ 1,026,973,397
Equity in trading accounts:      
Cash and cash equivalents $ 699,318,107 $ 723,771,439 $ 149,272,014