Schedules of Investments (Unaudited) - Open S&P GSCI ER Index Futures Contracts (Details)	9 Months Ended	12 Months Ended
Sep. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)
Number of contracts	22,362	35,543
Expiration date	Dec. 15, 2026	Mar. 16, 2026
Current notional amount	$ 1,024,333,227	$ 1,078,495,466
Net unrealized appreciation (depreciation)	$ (10,205,049)	$ (14,025,327)

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Date derivative contract ends, in YYYY-MM-DD format.

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The number of derivative instruments of a particular group held by the entity.

+ References + Details