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Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($) | Sep. 30, 2024 | Dec. 31, 2023
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Investments in Securities, cost | $ 750,582,175 | $ 710,204,874
US Treasury Bill Securities [Member] |  |
Investments in Securities, cost | 297,391,008 | 342,604,310
Affiliated Investments [Member] |  |
Affiliated Investments, at Cost | $ 453,191,167 | $ 367,600,564

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