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FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024
FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES
Money market funds	$ 75,000,000	$ 75,000,000
Cash deposits	28,571,005	$ 36,818,839
Future contract
FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES
Future contract notional value	$ 100,320,714		$ 146,390,349

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