Schedule of Investments (Unaudited) - Treasury Bills and Money Market Fund - USD ($) | Sep. 30, 2021 | Dec. 31, 2020 |
Schedule of Investments [Line Items] | | | | |
Investments in Securities, Cost | | $ 20,916,654 | | $ 25,837,446 |
Percentage of Shareholders' Equity | | 97.51% | | 99.31% |
United States Treasury Obligations, Value | | $ 11,999,338 | | $ 11,998,090 |
Affiliated Investments, Value | | 8,917,375 | | 13,839,876 |
Investments in Securities, Value | | $ 20,916,713 | | 25,837,966 |
U.S. Treasury Bills, 0.050% due October 7, 2021 [Member] | | | | |
Schedule of Investments [Line Items] | | | | |
Investment Interest Rate | [1],[2] | 0.05% | | |
Investment Maturity Date | [1],[2] | Oct. 7, 2021 | | |
Restricted for maintenance margin | [1],[2] | $ 7,999,200 | | |
Percentage of Shareholders' Equity | [1],[2] | 18.65% | | |
United States Treasury Obligations, Value | [1],[2] | $ 3,999,982 | | |
United States Treasury Obligations, Principal Value | [1],[2] | $ 4,000,000 | | |
U.S. Treasury Bills, 0.050% due November 4, 2021 [Member] | | | | |
Schedule of Investments [Line Items] | | | | |
Investment Interest Rate | [1],[2] | 0.05% | | |
Investment Maturity Date | [1],[2] | Nov. 4, 2021 | | |
Percentage of Shareholders' Equity | [1],[2] | 18.65% | | |
United States Treasury Obligations, Value | [1],[2] | $ 3,999,789 | | |
United States Treasury Obligations, Principal Value | [1],[2] | $ 4,000,000 | | |
U.S. Treasury Bills, 0.045% due December 9, 2021 [Member] | | | | |
Schedule of Investments [Line Items] | | | | |
Investment Interest Rate | [1] | 0.045% | | |
Investment Maturity Date | [1] | Dec. 9, 2021 | | |
Percentage of Shareholders' Equity | [1] | 9.32% | | |
United States Treasury Obligations, Value | [1] | $ 1,999,922 | | |
United States Treasury Obligations, Principal Value | [1] | $ 2,000,000 | | |
U.S. Treasury Bills, 0.050% due March 10, 2021 [Member] | | | | |
Schedule of Investments [Line Items] | | | | |
Investment Interest Rate | [1] | 0.05% | | |
Investment Maturity Date | [1] | Mar. 10, 2022 | | |
Percentage of Shareholders' Equity | [1] | 9.32% | | |
United States Treasury Obligations, Value | [1] | $ 1,999,645 | | |
United States Treasury Obligations, Principal Value | [1] | 2,000,000 | | |
United States Treasury Obligations [Member] | | | | |
Schedule of Investments [Line Items] | | | | |
Investments in Securities, Cost | [1] | $ 11,999,279 | | $ 11,997,570 |
Percentage of Shareholders' Equity | [1] | 55.94% | | 46.12% |
United States Treasury Obligations, Value | [1] | $ 11,999,338 | | $ 11,998,090 |
Money Market Mutual Fund - Invesco Government & Agency Portfolio - Institutional Class [Member | Affiliated Investments [Member] | | | | |
Schedule of Investments [Line Items] | | | | |
Investment Interest Rate | [3],[4] | 0.03% | | |
Investments in Securities, Cost | [3],[4] | $ 8,917,375 | | |
Percentage of Shareholders' Equity | [3],[4] | 41.57% | | |
Affiliated Investments, Value | | $ 8,917,375 | [3],[4] | $ 13,839,876 |
Affiliated Investments, Shares | [3],[4] | 8,917,375 | | |
U.S. Treasury Bills, 0.090% due March 25, 2021 [Member] | | | | |
Schedule of Investments [Line Items] | | | | |
Investment Interest Rate | [1],[5] | | | 0.09% |
Investment Maturity Date | [1],[5] | | | Mar. 25, 2021 |
Restricted for maintenance margin | [1],[5] | | | $ 8,997,800 |
Percentage of Shareholders' Equity | [1],[5] | | | 19.22% |
United States Treasury Obligations, Value | [1],[5] | | | $ 4,999,278 |
United States Treasury Obligations, Principal Value | [1],[5] | | | $ 5,000,000 |
U.S. Treasury Bills, 0.090% due April 8, 2021 [Member] | | | | |
Schedule of Investments [Line Items] | | | | |
Investment Interest Rate | [1],[5] | | | 0.09% |
Investment Maturity Date | [1],[5] | | | Apr. 8, 2021 |
Restricted for maintenance margin | [1],[5] | | | $ 8,997,800 |
Percentage of Shareholders' Equity | [1],[5] | | | 26.90% |
United States Treasury Obligations, Value | [1],[5] | | | $ 6,998,812 |
United States Treasury Obligations, Principal Value | [1],[5] | | | $ 7,000,000 |
Money Market Mutual Fund - Invesco Government & Agency Portfolio - Institutional Class [Member] | Affiliated Investments [Member] | | | | |
Schedule of Investments [Line Items] | | | | |
Investment Interest Rate | [3],[6] | | | 0.03% |
Investments in Securities, Cost | [3],[6] | | | $ 13,839,876 |
Percentage of Shareholders' Equity | [3],[6] | | | 53.19% |
Affiliated Investments, Value | [3],[6] | | | $ 13,839,876 |
Affiliated Investments, Shares | [3],[6] | | | 13,839,876 |
| |
[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 $7,999,200 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 September 30, 2021. | |
[5] | United States Treasury Obligations of $8,997,800 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts. | |
[6] | The rate shown is the 7-day SEC standardized yield as of December 31, 2020. | |