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CONTRACTS AND AGREEMENTS - Brokerage Commissions (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
CONTRACTS AND AGREEMENTS        
Total commissions accrued to brokers $ 19,456 $ 21,593 $ 40,399 $ 44,992
Commission        
CONTRACTS AND AGREEMENTS        
Total commissions accrued to brokers     $ 40,399 $ 44,992
Total commissions as annualized percentage of average total net assets 0.09% 0.07% 0.09% 0.07%