Schedule of Investments - Treasury Bills and Money Market Fund - USD ($) | Dec. 31, 2021 | Dec. 31, 2020 |
Schedule of Investments [Line Items] | | | | | |
Investment Interest Rate | [1] | 0.14% | | | |
Investment Maturity Date | [1] | | | Oct. 7, 2021 | |
Investments in Securities, Cost | | $ 111,275,102 | | $ 141,078,285 | |
Percentage of Shareholders' Equity | | 98.74% | | 99.40% | |
United States Treasury Obligations, Value | | $ 31,996,668 | | $ 54,989,124 | |
Affiliated investments, at value (cost $79,277,598 and $86,092,194, respectively) | | 79,239,151 | | 86,041,269 | |
Investments in Securities, Value | | 111,235,819 | | 141,030,393 | |
Investments in Securities, cost | | 111,275,102 | | 141,078,285 | |
Affiliated Investments [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Investments in Securities, Cost | | $ 79,277,598 | | $ 86,092,194 | |
Percentage of Shareholders' Equity | | 70.34% | | 60.64% | |
Affiliated investments, at value (cost $79,277,598 and $86,092,194, respectively) | | $ 79,239,151 | | $ 86,041,269 | |
Investments in Securities, cost | | $ 79,277,598 | | 86,092,194 | |
U.S. Treasury Bills, 0.085% due February 25, 2021 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Investment Interest Rate | [1] | 0.04% | | | |
Investment Maturity Date | [1] | Jan. 6, 2022 | | | |
Percentage of Shareholders' Equity | [1] | 4.44% | | | |
United States Treasury Obligations, Value | [1] | $ 5,000,000 | | | |
United States Treasury Obligations, Principal Value | [1] | $ 5,000,000 | | | |
U.S. Treasury Bills, 0.080% due March 11, 2021 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Investment Interest Rate | [1],[2] | 0.05% | | | |
Investment Maturity Date | [1],[2] | Jan. 13, 2022 | | | |
Percentage of Shareholders' Equity | [1],[2] | 3.55% | | | |
United States Treasury Obligations, Value | [1],[2] | $ 3,999,989 | | | |
United States Treasury Obligations, Principal Value | [1],[2] | $ 4,000,000 | | | |
U.S. Treasury Bills, 0.90% due June 10, 2021 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Investment Interest Rate | [1],[2] | 0.055% | | | |
Investment Maturity Date | [1],[2] | Jan. 27, 2022 | | | |
Percentage of Shareholders' Equity | [1],[2] | 2.66% | | | |
United States Treasury Obligations, Value | [1],[2] | $ 2,999,955 | | | |
United States Treasury Obligations, Principal Value | [1],[2] | $ 3,000,000 | | | |
U.S. Treasury Bills, 0.140% due October 7, 2021 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Investment Interest Rate | [1],[2] | 0.05% | | | |
Investment Maturity Date | [1],[2] | Feb. 3, 2022 | | | |
Percentage of Shareholders' Equity | [1],[2] | 4.44% | | | |
United States Treasury Obligations, Value | [1],[2] | $ 5,001,293 | | | |
United States Treasury Obligations, Principal Value | [1],[2] | $ 5,001,400 | | | |
U S Treasury Bills Zero Point Zero Six Five Percentage Due May Twelve Two Thousand Twenty Two | | | | | |
Schedule of Investments [Line Items] | | | | | |
Investment Interest Rate | [1],[2] | 0.065% | | | |
Investment Maturity Date | [1],[2] | May 12, 2022 | | | |
Percentage of Shareholders' Equity | [1],[2] | 13.31% | | | |
United States Treasury Obligations, Value | [1],[2] | $ 14,995,431 | | | |
United States Treasury Obligations, Principal Value | [1],[2] | 15,000,000 | | | |
United States Treasury Obligations [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Investments in Securities, Cost | | $ 31,997,504 | | $ 54,986,091 | |
Percentage of Shareholders' Equity | | 28.40% | | 38.76% | [1] |
United States Treasury Obligations, Value | | $ 31,996,668 | | $ 54,989,124 | [1] |
Investments in Securities, cost | | $ 31,997,504 | | 54,986,091 | |
Exchange Traded Funds | | | | | |
Schedule of Investments [Line Items] | | | | | |
Investments in Securities, Cost | [3] | | | $ 17,486,475 | |
Percentage of Shareholders' Equity | [3] | 10.15% | | 12.29% | |
Affiliated investments, at value (cost $79,277,598 and $86,092,194, respectively) | [3] | $ 11,439,187 | | $ 17,435,550 | |
Affiliated Investments, Shares | [3] | 108,300 | | 165,000 | |
Investments in Securities, cost | [3] | | | $ 17,486,475 | |
Exchange Traded Funds | Affiliated Investments [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Investments in Securities, Cost | [3] | $ 11,477,634 | | | |
Affiliated investments, at value (cost $79,277,598 and $86,092,194, respectively) | | 11,439,187 | | $ 17,435,550 | |
Investments in Securities, cost | [3] | $ 11,477,634 | | | |
Money Market Mutual Fund - Invesco Premier U.S. Government Money Portfolio - Institutional Class [Member] | Affiliated Investments [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Investment Interest Rate | [3] | 0.03% | [4] | 0.03% | [5] |
Investments in Securities, Cost | [3] | $ 67,799,964 | [4] | $ 68,605,719 | [5] |
Percentage of Shareholders' Equity | | 60.19% | [3],[4] | 48.35% | [5] |
Affiliated investments, at value (cost $79,277,598 and $86,092,194, respectively) | | $ 67,799,964 | [3],[4] | $ 68,605,719 | [5] |
Affiliated Investments, Shares | | 67,799,964 | [3],[4] | 68,605,719 | [5] |
Investments in Securities, cost | [3] | $ 67,799,964 | [4] | $ 68,605,719 | [5] |
U.S. Treasury Bills, 0.080% due March 11, 2021 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Restricted for maintenance margin | | $ 26,992,800 | | | |
U.S. Treasury Bills, 1.520% due February 6, 2020 [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 | |
U S Treasury Bills Zero Point Zero Eight Zero Percentage Due March Eleven Two Thousand Twenty One1 | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1],[6] | | | 14.09% | |
United States Treasury Obligations, Value | [1],[6] | | | $ 19,997,616 | |
United States Treasury Obligations, Principal Value | [1],[6] | | | $ 20,000,000 | |
U.S. Treasury Bills, 1.560% due March 5, 2020 [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 | |
U.S. Treasury Bills, 1.520% due April 2, 2020 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1],[6] | | | 14.10% | |
United States Treasury Obligations, Value | [1],[6] | | | $ 19,998,339 | |
United States Treasury Obligations, Principal Value | [1],[6] | | | $ 20,000,000 | |
U.S. Treasury Bills, 1.520% due February 6, 2020 [Member | | | | | |
Schedule of Investments [Line Items] | | | | | |
Investment Interest Rate | [1],[6] | | | 0.085% | |
Investment Maturity Date | [1],[6] | | | Feb. 25, 2021 | |
U.S. Treasury Bills, 1.560% due March 5, 2020 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Investment Interest Rate | [1],[6] | | | 0.08% | |
Investment Maturity Date | [1],[6] | | | Mar. 11, 2021 | |
U.S. Treasury Bills, 1.520% due April 2, 2020 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Investment Interest Rate | [1] | | | 0.09% | |
Investment Maturity Date | [1] | | | Jun. 10, 2021 | |
Restricted for maintenance margin | | | | $ 39,994,000 | |
| |
[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 $26,992,800 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 December 31, 2021. | |
[5] | The rate shown is the 7-day SEC standardized yield as of December 31, 2020. | |
[6] | United States Treasury Obligations of $39,994,000 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts. | |