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Schedule of Investments (Unaudited) - Treasury Bills and Money Market Fund - USD ($) | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Schedule Of Investments [Line Items] |  |  |  |  |
Percentage of Shareholders' Equity |  | 99.84% |  | 99.93% |
United States Treasury Obligations, Value |  | $ 29,510,756 |  | $ 29,517,982 |
Total Investments in Securities |  | 52,714,486 |  | 65,364,155 |
Investments in Securities, cost |  | $ 52,711,404 |  | $ 65,341,449 |
U.S. Treasury Bills, 5.250% due September 5, 2024 |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Percentage of Shareholders' Equity | [1] | 9.38% |  |  |
United States Treasury Obligations, Value | [1],[2] | $ 4,952,273 |  |  |
United States Treasury Obligations, Principal Value | [1],[2] | $ 5,000,000 |  |  |
Investment Interest Rate | [1],[2] | 5.25% |  |  |
Investment Maturity Date | [1],[2] | Sep. 05, 2024 |  |  |
U.S. Treasury Bills, 5.240% due October 3, 2024 |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Percentage of Shareholders' Equity | [1] | 18.68% |  |  |
United States Treasury Obligations, Value | [1] | $ 9,865,005 |  |  |
United States Treasury Obligations, Principal Value | [1] | $ 10,000,000 |  |  |
Investment Interest Rate | [1] | 5.24% |  |  |
Investment Maturity Date | [1] | Oct. 03, 2024 |  |  |
U.S. Treasury Bills, 5.165% due November 14, 2024 |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Percentage of Shareholders' Equity | [1],[2] | 18.57% |  |  |
United States Treasury Obligations, Value | [1],[2] | $ 9,805,341 |  |  |
United States Treasury Obligations, Principal Value | [1],[2] | $ 10,000,000 |  |  |
Investment Interest Rate | [1],[2] | 5.165% |  |  |
Investment Maturity Date | [1],[2] | Nov. 14, 2024 |  |  |
Restricted for maintenance margin |  | $ 4,902,500 |  |  |
U.S. Treasury Bills, 5.155% due December 5, 2024 |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Percentage of Shareholders' Equity | [1] | 9.26% |  |  |
United States Treasury Obligations, Value | [1] | $ 4,888,137 |  |  |
United States Treasury Obligations, Principal Value | [1] | $ 5,000,000 |  |  |
Investment Interest Rate | [1] | 5.155% |  |  |
Investment Maturity Date | [1] | Dec. 05, 2024 |  |  |
U.S. Treasury Bills, 5.250% due March 7, 2024 |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Percentage of Shareholders' Equity | [3] |  |  | 7.57% |
United States Treasury Obligations, Value | [3] |  |  | $ 4,953,044 |
United States Treasury Obligations, Principal Value | [3] |  |  | $ 5,000,000 |
Investment Interest Rate | [3] |  |  | 5.25% |
Investment Maturity Date | [3] |  |  | Mar. 07, 2024 |
U.S. Treasury Bills, 5.245% due April 4, 2024 |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Percentage of Shareholders' Equity | [1] |  |  | 15.08% |
United States Treasury Obligations, Value | [1] |  |  | $ 9,865,796 |
United States Treasury Obligations, Principal Value | [1] |  |  | $ 10,000,000 |
Investment Interest Rate | [1] |  |  | 5.245% |
Investment Maturity Date | [1] |  |  | Apr. 04, 2024 |
U.S. Treasury Bills, 5.270% due May 16, 2024 |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Percentage of Shareholders' Equity | [3],[4] |  |  | 15.00% |
United States Treasury Obligations, Value | [3],[4] |  |  | $ 9,808,450 |
United States Treasury Obligations, Principal Value | [3],[4] |  |  | $ 10,000,000 |
Investment Interest Rate | [3],[4] |  |  | 5.27% |
Investment Maturity Date | [1],[2] |  |  | May 16, 2024 |
Restricted for maintenance margin |  |  |  | $ 4,904,000 |
U.S. Treasury Bills, 5.190% due June 6, 2024 |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Percentage of Shareholders' Equity | [1] |  |  | 7.48% |
United States Treasury Obligations, Value | [1] |  |  | $ 4,890,692 |
United States Treasury Obligations, Principal Value | [1] |  |  | $ 5,000,000 |
Investment Interest Rate | [3] |  |  | 5.19% |
Investment Maturity Date | [3] |  |  | Jun. 06, 2024 |
United State Treasury Obligation [Member] |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Percentage of Shareholders' Equity |  | 55.89% | [1] | 45.13% | [3]
United States Treasury Obligations, Value |  | $ 29,510,756 | [1] | $ 29,517,982 | [3]
Investments in Securities, cost |  | $ 29,507,674 | [1] | $ 29,495,276 | [3]
Money Market Mutual Fund - Invesco Government and Agency Portfolio - Institutional Class [Member] | Affiliated Investments [Member] |  |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |  |
Percentage of Shareholders' Equity |  | 43.95% | [5],[6] | 54.80% | [7],[8]
Shares |  | 23,203,730 | [5],[6] | 35,846,173 | [7],[8]
Affiliated investments, at value |  | $ 23,203,730 | [5],[6] | $ 35,846,173 | [7],[8]
Investment Interest Rate |  | 5.25% | [5],[6] | 4.22% | [7],[8]
Investments in Securities, cost |  | $ 23,203,730 | [5],[6] | $ 35,846,173 | [7],[8]
[1] | Security may be traded on a discount basis. The interest rate shown represents the discount rate at the most recent auction date of the security prior to period end
[2] | United States Treasury Obligations of $4,902,500 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts
[3] | Security may be traded on a discount basis. The interest rate shown represents the discount rate at the most recent auction date of the security prior to period end.
[4] | United States Treasury Obligations of $4,904,000 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts.
[5] | Affiliated issuer. The issuer and/or the Fund is a wholly-owned subsidiary of Invesco Ltd., or is affiliated by having an investment adviser that is under common control of Invesco Ltd. See Note 8.
[6] | The rate shown is the 7-day SEC standardized yield as of June 30, 2024.
[7] | Affiliated issuer. The issuer and/or the Fund is a wholly-owned subsidiary of Invesco Ltd., or is affiliated by having an investment adviser that is under common control of Invesco Ltd. See Note 8.
[8] | The rate shown is the 7-day SEC standardized yield as of December 31, 2023.

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