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FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES (Details) - USD ($)
Dec. 31, 2024
Dec. 31, 2023
FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES    
Money market funds $ 75,000,000 $ 76,785,000
Cash deposits and investments in Treasuries 36,818,839 54,151,411
Future contract    
FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES    
Future contract notional value $ 142,038,374 $ 188,237,167