Schedule of Investments (Unaudited) - Treasury Bills and Money Market Fund - USD ($) | Mar. 31, 2021 | Dec. 31, 2020 |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | | 81.26% | | 78.08% | |
United States Treasury Obligations, Value | | $ 116,991,962 | | $ 65,983,080 | |
Affiliated investments, Value | | 121,426,865 | | 69,754,530 | |
Investments in Securities, Value | | 238,418,827 | | 135,737,610 | |
Investments in Securities, cost | | $ 238,356,574 | | $ 135,688,386 | |
Affiliated Investments [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | | 41.38% | | 40.12% | |
Affiliated investments, Value | | $ 121,426,865 | | $ 69,754,530 | |
Affiliated Investments, Cost | | $ 121,379,684 | | $ 69,709,628 | |
U.S. Treasury Bills, 0.045% due June 10, 2021 [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | 3.41% | | | |
United States Treasury Obligations, Value | [1] | $ 9,999,776 | | | |
United States Treasury Obligations, Principal Value | [1] | $ 10,000,000 | | | |
Investment Interest Rate | [1] | 0.045% | | | |
Investment Maturity Date | [1] | Jun. 10, 2021 | | | |
U.S. Treasury Bills, 0.070% due August 5, 2021 [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1],[2] | 14.66% | | | |
United States Treasury Obligations, Value | [1],[2] | $ 42,997,743 | | | |
United States Treasury Obligations, Principal Value | [1],[2] | $ 43,000,000 | | | |
Investment Interest Rate | [1],[2] | 0.07% | | | |
Investment Maturity Date | [1],[2] | Aug. 5, 2021 | | | |
U.S. Treasury Bills, 0.050% due August 12, 2021 [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | 9.20% | | | |
United States Treasury Obligations, Value | [1] | $ 26,998,105 | | | |
United States Treasury Obligations, Principal Value | [1] | $ 27,000,000 | | | |
Investment Interest Rate | [1] | 0.05% | | | |
Investment Maturity Date | [1] | Aug. 12, 2021 | | | |
U.S. Treasury Bills, 0.060% due September 9, 2021 [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1],[2] | 9.20% | | | |
United States Treasury Obligations, Value | [1],[2] | $ 26,997,585 | | | |
United States Treasury Obligations, Principal Value | [1],[2] | $ 27,000,000 | | | |
Investment Interest Rate | [1],[2] | 0.06% | | | |
Investment Maturity Date | [1],[2] | Sep. 9, 2021 | | | |
U.S. Treasury Bills, 0.035% due October 7, 2021 [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | 3.41% | | | |
United States Treasury Obligations, Value | [1] | $ 9,998,753 | | | |
United States Treasury Obligations, Principal Value | [1] | $ 10,000,000 | | | |
Investment Interest Rate | [1] | 0.035% | | | |
Investment Maturity Date | [1] | Oct. 7, 2021 | | | |
United States Treasury Obligations [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | 39.88% | | 37.96% | |
United States Treasury Obligations, Value | [1] | $ 116,991,962 | | $ 65,983,080 | |
Investments in Securities, cost | [1] | $ 116,976,890 | | $ 65,978,758 | |
Exchange-Traded Fund [Member] | Affiliated Investments [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [3] | 5.47% | | 9.23% | |
Affiliated investments, Value | [3] | $ 16,053,552 | | $ 16,051,273 | |
Affiliated Investments, Shares | [3] | 151,900 | | 151,900 | |
Affiliated Investments, Cost | [3] | $ 16,006,371 | | $ 16,006,371 | |
Money Market Funds [Member] | Invesco Government and Agency Portfolio Institutional Class [Member] | Affiliated Investments [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | | 35.91% | [3],[4] | 30.89% | |
Affiliated investments, Value | | $ 105,373,313 | [3],[4] | $ 53,703,257 | |
Affiliated Investments, Shares | | 105,373,313 | [3],[4] | 53,703,257 | |
Investment Interest Rate | [3] | 0.03% | [4] | 0.03% | [5] |
Affiliated Investments, Cost | [3] | $ 105,373,313 | [4] | $ 53,703,257 | [5] |
U.S. Treasury Bills, 0.070% due August 5, 2021 [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Restricted for maintenance margin | | $ 19,997,300 | | | |
U.S. Treasury Bills, 0.140% due October 7, 2021 [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | | | 5.75% | |
United States Treasury Obligations, Value | [1] | | | $ 9,993,867 | |
United States Treasury Obligations, Principal Value | [1] | | | $ 10,000,000 | |
Investment Interest Rate | [1] | | | 0.14% | |
Investment Maturity Date | [1] | | | Oct. 7, 2021 | |
U.S. Treasury Bills, 0.085% due February 25, 2021 [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1],[6] | | | 11.50% | |
United States Treasury Obligations, Value | [1],[6] | | | $ 19,998,339 | |
United States Treasury Obligations, Principal Value | [1],[6] | | | $ 20,000,000 | |
Investment Interest Rate | [1],[6] | | | 0.085% | |
Investment Maturity Date | [1],[6] | | | Feb. 25, 2021 | |
Restricted for maintenance margin | | | | $ 19,998,000 | |
U.S. Treasury Bills, 0.080% due March 11, 2021 [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | | | 10.93% | |
United States Treasury Obligations, Value | [1] | | | $ 18,997,736 | |
United States Treasury Obligations, Principal Value | [1] | | | $ 19,000,000 | |
Investment Interest Rate | [1],[6] | | | 0.08% | |
Investment Maturity Date | [1],[6] | | | Mar. 11, 2021 | |
U.S. Treasury Bills, 0.090% due June 10, 2021 [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | | | 5.75% | |
United States Treasury Obligations, Value | [1] | | | $ 9,996,827 | |
United States Treasury Obligations, Principal Value | [1] | | | $ 10,000,000 | |
Investment Interest Rate | [1] | | | 0.09% | |
Investment Maturity Date | [1] | | | Jun. 10, 2021 | |
U.S. Treasury Bills, 0.140% due September 9, 2021 [Member] | | | | | |
Schedule Of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | | | 4.03% | |
United States Treasury Obligations, Value | [1] | | | $ 6,996,311 | |
United States Treasury Obligations, Principal Value | [1] | | | $ 7,000,000 | |
Investment Interest Rate | [1] | | | 0.14% | |
Investment Maturity Date | [1] | | | Sep. 9, 2021 | |
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[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 $19,997,300 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts. | |
[3] | 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. | |
[4] | The rate shown is the 7-day SEC standardized yield as of March 31, 2021. | |
[5] | The rate shown is the 7-day SEC standardized yield as of December 31, 2020. | |
[6] | United States Treasury Obligations of $19,998,000 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts. | |