Schedule of Investments (Unaudited) - Treasury Bills and Affiliated Investments - USD ($) | Mar. 31, 2023 | Dec. 31, 2022 |
Schedule of Investments [Line Items] | | | |
Percentage of Shareholders' Equity | | 98.32% | 97.75% |
United States Treasury Obligations, Value | | $ 102,596,535 | $ 137,598,060 |
Affiliated Investments, Value | | 172,815,076 | 159,154,074 |
Investments in Securities, Value | | 275,411,611 | 296,752,134 |
Investments in Securities, Cost | | $ 275,342,208 | $ 296,792,680 |
Investment, Identifier [Axis]: Affiliated Investments | | | |
Schedule of Investments [Line Items] | | | |
Percentage of Shareholders' Equity | | 61.70% | 52.43% |
Affiliated Investments, Value | | $ 172,815,076 | $ 159,154,074 |
Affiliated Investments, Cost | | $ 172,790,651 | $ 159,226,834 |
Investment, Identifier [Axis]: Affiliated Investments, Exchange-Traded Fund, Invesco Treasury Collateral ETF | | | |
Schedule of Investments [Line Items] | | | |
Percentage of Shareholders' Equity | [1],[2] | 19.27% | 17.75% |
Affiliated Investments, Value | [1],[2] | $ 53,978,595 | $ 53,881,410 |
Affiliated Investments, Shares | [1],[2] | 511,500 | 511,500 |
Affiliated Investments, Cost | [1],[2] | $ 53,954,170 | $ 53,954,170 |
Investment, Identifier [Axis]: Affiliated Investments, Money Market Mutual Fund, Invesco Government & Agency Portfolio, Institutional Class, 2.88% | | | |
Schedule of Investments [Line Items] | | | |
Percentage of Shareholders' Equity | [1],[3] | 42.43% | |
Affiliated Investments, Value | [1],[3] | $ 118,836,481 | |
Affiliated Investments, Shares | [1],[3] | 118,836,481 | |
Investment Interest Rate | | 2.88% | |
Affiliated Investments, Cost | [1],[3] | $ 118,836,481 | |
Investment, Identifier [Axis]: Affiliated Investments, Money Market Mutual Fund, Invesco Government & Agency Portfolio, Institutional Class, 4.22% | | | |
Schedule of Investments [Line Items] | | | |
Percentage of Shareholders' Equity | [2],[4] | | 34.68% |
Affiliated Investments, Value | [2],[4] | | $ 105,272,664 |
Affiliated Investments, Shares | [2],[4] | | 105,272,664 |
Investment Interest Rate | | | 4.22% |
Affiliated Investments, Cost | [2],[3] | | $ 105,272,664 |
Investment, Identifier [Axis]: United States Treasury Obligations | | | |
Schedule of Investments [Line Items] | | | |
Percentage of Shareholders' Equity | [5] | 36.62% | 45.32% |
United States Treasury Obligations, Value | [5] | $ 102,596,535 | $ 137,598,060 |
Investments in Securities, Cost | [5] | $ 102,551,557 | $ 137,565,846 |
Investment, Identifier [Axis]: United States Treasury Obligations, U.S. Treasury Bills, 3.340% due January 5, 2023 | | | |
Schedule of Investments [Line Items] | | | |
Percentage of Shareholders' Equity | [5] | | 27.99% |
United States Treasury Obligations, Value | [5] | | $ 84,982,858 |
United States Treasury Obligations, Principal Value | [5] | | $ 85,000,000 |
Investment Interest Rate | | | 3.34% |
Investment Maturity Date | | | Jan. 05, 2023 |
Investment, Identifier [Axis]: United States Treasury Obligations, U.S. Treasury Bills, 4.050% due April 6, 2023 | | | |
Schedule of Investments [Line Items] | | | |
Percentage of Shareholders' Equity | [5] | 19.63% | |
United States Treasury Obligations, Value | [5] | $ 54,978,859 | |
United States Treasury Obligations, Principal Value | [5] | $ 55,000,000 | |
Investment Interest Rate | | 4.05% | |
Investment Maturity Date | | Apr. 06, 2023 | |
Investment, Identifier [Axis]: United States Treasury Obligations, U.S. Treasury Bills, 4.270% due March 9, 2023 | | | |
Schedule of Investments [Line Items] | | | |
Percentage of Shareholders' Equity | [5] | | 9.15% |
United States Treasury Obligations, Value | [5] | | $ 27,785,733 |
United States Treasury Obligations, Principal Value | [5] | | $ 28,000,000 |
Investment Interest Rate | | | 4.27% |
Investment Maturity Date | | | Mar. 09, 2023 |
Investment, Identifier [Axis]: United States Treasury Obligations, U.S. Treasury Bills, 4.285% due March 2, 2023 | | | |
Schedule of Investments [Line Items] | | | |
Percentage of Shareholders' Equity | [5] | | 8.18% |
United States Treasury Obligations, Value | [5] | | $ 24,829,469 |
United States Treasury Obligations, Principal Value | [5] | | $ 25,000,000 |
Investment Interest Rate | | | 4.285% |
Investment Maturity Date | | | Mar. 02, 2023 |
Investment, Identifier [Axis]: United States Treasury Obligations, U.S. Treasury Bills, 4.750% due June 1, 2023 | | | |
Schedule of Investments [Line Items] | | | |
Percentage of Shareholders' Equity | [5] | 7.08% | |
United States Treasury Obligations, Value | [5] | $ 19,851,435 | |
United States Treasury Obligations, Principal Value | [5] | $ 20,000,000 | |
Investment Interest Rate | | 4.75% | |
Investment Maturity Date | | Jun. 01, 2023 | |
Investment, Identifier [Axis]: United States Treasury Obligations, U.S. Treasury Bills, 4.765% due June 8, 2023 | | | |
Schedule of Investments [Line Items] | | | |
Percentage of Shareholders' Equity | [5] | 9.91% | |
United States Treasury Obligations, Value | [5] | $ 27,766,241 | |
United States Treasury Obligations, Principal Value | [5] | $ 28,000,000 | |
Investment Interest Rate | | 4.765% | |
Investment Maturity Date | | Jun. 08, 2023 | |
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[1] Affiliated company. 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. All or a portion of the value was pledged as collateral to cover margin requirements for open futures contracts. See Note 2J. The rate shown is the 7-day SEC standardized yield as of March 31, 2023 . The rate shown is the 7-day SEC standardized yield as of December 31, 2022 . 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. | |