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Statements of Financial Condition (Parenthetical) - USD ($)
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Statements of Financial Condition      
Cash and cash equivalents $ 8,784,452 $ 6,497,522 $ 4,043,457
Cash and cash equivalents $ 0 $ 845,621 $ 636,143