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Derivative Instruments (Tables) | 12 Months Ended
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Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Fair Value of Derivative Instruments and Effect of Derivative Instruments on Statements of Income and Expenses | The Fair Value of Derivative Instruments is as follows:
|  | December 31, 2024 |  |  | December 31, 2023 |
Risk Exposure/Derivative Type (a) |  | Assets |  |  | Liabilities |  |  | Assets |  |  | Liabilities |
Commodity risk |  |  |  |  |  |  |  |  |  |  |  |
Commodity Futures Contracts |  | $ | 78,321,049 |  |  | $ | (29,019,736 | ) |  | $ | 15,443,843 |  |  | $ | (32,743,090 | )
(a) Includes cumulative appreciation (depreciation) of commodity futures contracts. Only the current day’s variation margin receivable (payable) is reported in the December 31, 2024 and December 31, 2023 Statements of Financial Condition. The Effect of Derivative Instruments on the Statements of Income and Expenses is as follows:
| Location of Gain or (Loss) on Derivatives |  | Years Ended December 31, |
Risk Exposure/Derivative Type | Recognized in Income |  | 2024 |  |  | 2023 |  |  | 2022 |
Commodity risk |  |  |  |  |  |  |  |  |  |
Commodity Futures Contracts | Net Realized Gain (Loss) |  | $ | 112,377,237 |  |  | $ | 32,701,174 |  |  | $ | (31,195,234 | )
| Net Change in Unrealized Gain (Loss) |  |  | 66,600,560 |  |  |  | (8,331,568 | ) |  |  | (43,963,475 | )
Total |  |  | $ | 178,977,797 |  |  | $ | 24,369,606 |  |  | $ | (75,158,709 | )
Summary of Average Monthly Notional Value of Future Contracts Outstanding | The table below summarizes the average monthly notional value of futures contracts outstanding during the period:
|  | Years Ended December 31, |
|  | 2024 |  |  | 2023 |  |  | 2022 |
Average Notional Value |  | $ | 738,966,747 |  |  | $ | 875,688,978 |  |  | $ | 1,536,791,604 |

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