Schedule of Investments (Unaudited) - Treasury Bills and Money Market Fund - USD ($) | Sep. 30, 2021 | Dec. 31, 2020 |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | | 98.03% | | 99.40% | |
United States Treasury Obligations, Value | | $ 45,998,997 | | $ 54,989,124 | |
Affiliated investments, at value (cost $64,651,518 and $86,092,194, respectively) | | 64,616,862 | | 86,041,269 | |
Investments in Securities, Value | | 110,615,859 | | 141,030,393 | |
Investments in Securities, Cost | | $ 110,649,863 | | $ 141,078,285 | |
Affiliated Investments [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | | 57.26% | | 60.64% | |
Affiliated investments, at value (cost $64,651,518 and $86,092,194, respectively) | | $ 64,616,862 | | $ 86,041,269 | |
Investments in Securities, Cost | | $ 64,651,518 | | $ 86,092,194 | |
U.S. Treasury Bills, 0.050% due October 7, 2021 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1],[2] | 15.07% | | | |
United States Treasury Obligations, Value | [1],[2] | $ 16,999,925 | | | |
United States Treasury Obligations, Principal Value | [1],[2] | $ 17,000,000 | | | |
Investment Interest Rate | [1],[2] | 0.05% | | | |
Investment Maturity Date | [1],[2] | Oct. 7, 2021 | | | |
U.S. Treasury Bills, 0.050% due November 12, 2021 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1],[2] | 3.54% | | | |
United States Treasury Obligations, Value | [1],[2] | $ 3,999,802 | | | |
United States Treasury Obligations, Principal Value | [1],[2] | $ 4,000,000 | | | |
Investment Interest Rate | [1],[2] | 0.05% | | | |
Investment Maturity Date | [1],[2] | Nov. 12, 2021 | | | |
U.S. Treasury Bills, 0.045% due December 2, 2021 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | 3.55% | | | |
United States Treasury Obligations, Value | [1] | $ 3,999,828 | | | |
United States Treasury Obligations, Principal Value | [1] | $ 4,000,000 | | | |
Investment Interest Rate | [2] | 0.045% | | | |
Investment Maturity Date | [1] | Dec. 2, 2021 | | | |
U.S. Treasury Bills, 0.045% due December 9, 2021 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1],[2] | 3.55% | | | |
United States Treasury Obligations, Value | [1],[2] | $ 3,999,845 | | | |
United States Treasury Obligations, Principal Value | [1],[2] | $ 4,000,000 | | | |
Investment Interest Rate | [1],[2] | 0.045% | | | |
Investment Maturity Date | [1],[2] | Dec. 9, 2021 | | | |
U.S. Treasury Bills, 0.040% due January 6, 2022 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | 4.43% | | | |
United States Treasury Obligations, Value | [1] | $ 4,999,625 | | | |
United States Treasury Obligations, Principal Value | [1] | $ 5,000,000 | | | |
Investment Interest Rate | [1] | 0.04% | | | |
Investment Maturity Date | [1] | Jan. 6, 2022 | | | |
U.S. Treasury Bills, 0.050% due January 13, 2022 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1],[2] | 3.54% | | | |
United States Treasury Obligations, Value | [1],[2] | $ 3,999,636 | | | |
United States Treasury Obligations, Principal Value | [1],[2] | $ 4,000,000 | | | |
Investment Interest Rate | [1],[2] | 0.05% | | | |
Investment Maturity Date | [1],[2] | Jan. 13, 2022 | | | |
U.S. Treasury Bills, 0.050% due January 27, 2022 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1],[2] | 2.66% | | | |
United States Treasury Obligations, Value | [1],[2] | $ 2,999,631 | | | |
United States Treasury Obligations, Principal Value | [1],[2] | $ 3,000,000 | | | |
Investment Interest Rate | [1],[2] | 0.05% | | | |
Investment Maturity Date | [1],[2] | Jan. 27, 2022 | | | |
U.S. Treasury Bills, 0.055% due February 3, 2022 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | 4.43% | | | |
United States Treasury Obligations, Value | [1] | $ 5,000,705 | | | |
United States Treasury Obligations, Principal Value | [1] | $ 5,001,400 | | | |
Investment Interest Rate | [1] | 0.055% | | | |
Investment Maturity Date | [1] | Feb. 3, 2022 | | | |
US Treasury and Government | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | 40.77% | | 38.76% | |
United States Treasury Obligations, Value | [1] | $ 45,998,997 | | $ 54,989,124 | |
Investments in Securities, Cost | [1] | 45,998,345 | | 54,986,091 | |
Restricted for maintenance margin | | $ 31,996,500 | | $ 39,994,000 | |
Exchange Traded Funds | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | | 10.14% | [3] | 12.29% | [4] |
Affiliated investments, at value (cost $64,651,518 and $86,092,194, respectively) | | $ 11,442,978 | [3] | $ 17,435,550 | [4] |
Affiliated Investments, Shares | | 108,300 | [3] | 165,000 | [4] |
Exchange Traded Funds | Affiliated Investments [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Affiliated investments, at value (cost $64,651,518 and $86,092,194, respectively) | | $ 11,442,978 | | $ 17,435,550 | |
Investments in Securities, Cost | | $ 11,477,634 | [3] | $ 17,486,475 | [4] |
Money Market Mutual Fund - Invesco Government and Agency Portfolio - Institutional Class [Member] | Affiliated Investments [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | | 47.12% | [3],[5] | 48.35% | [4],[6] |
Affiliated investments, at value (cost $64,651,518 and $86,092,194, respectively) | | $ 53,173,884 | [3],[5] | $ 68,605,719 | [4],[6] |
Affiliated Investments, Shares | | 53,173,884 | [3],[5] | 68,605,719 | [4],[6] |
Investment Interest Rate | | 0.03% | [3],[5] | 0.03% | [4],[6] |
Investments in Securities, Cost | | $ 53,173,884 | [3],[5] | $ 68,605,719 | [4],[6] |
U.S. Treasury Bills, 0.090% due June 10, 2021 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | | | 5.64% | |
United States Treasury Obligations, Value | [1] | | | $ 7,997,462 | |
United States Treasury Obligations, Principal Value | [1] | | | $ 8,000,000 | |
Investment Interest Rate | [1] | | | 0.09% | |
Investment Maturity Date | [1] | | | Jun. 10, 2021 | |
U.S. Treasury Bills, 0.140% due October 7, 2021 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | | | 4.93% | |
United States Treasury Obligations, Value | [1] | | | $ 6,995,707 | |
United States Treasury Obligations, Principal Value | [1] | | | $ 7,000,000 | |
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],[7] | | | 14.10% | |
United States Treasury Obligations, Value | [1],[7] | | | $ 19,998,339 | |
United States Treasury Obligations, Principal Value | [1],[7] | | | $ 20,000,000 | |
Investment Interest Rate | [1],[7] | | | 0.085% | |
Investment Maturity Date | [1],[7] | | | Feb. 25, 2021 | |
U.S. Treasury Bills, 0.080% due March 11, 2021 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1],[7] | | | 14.09% | |
United States Treasury Obligations, Value | [1],[7] | | | $ 19,997,616 | |
United States Treasury Obligations, Principal Value | [1],[7] | | | $ 20,000,000 | |
Investment Interest Rate | [1],[7] | | | 0.08% | |
Investment Maturity Date | [1],[7] | | | Mar. 11, 2021 | |
| |
[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 $31,996,500 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] | 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. | |
[5] | The rate shown is the 7-day SEC standardized yield as of September 30, 2021. | |
[6] | The rate shown is the 7-day SEC standardized yield as of December 31, 2020. | |
[7] | United States Treasury Obligations of $39,994,000 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts. | |