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Schedules of Investments (Unaudited) - Open S&P GSCI ER Index Futures Contracts (Details)
9 Months Ended 12 Months Ended
Sep. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Number of contracts 32,687 32,662
Expiration date Dec. 15, 2025 Mar. 17, 2025
Current notional amount $ 991,815,104 $ 964,446,802
Net unrealized appreciation (depreciation) $ 6,966,849 $ 32,609,106