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Schedule of Investments (Unaudited) - Treasury Bills and Affiliated Investments - USD ($)
Mar. 31, 2022
Dec. 31, 2021
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity 99.21% 101.22%
United States Treasury Obligations, Value $ 275,588,239 $ 203,008,216
Affiliated Investments, Value 1,587,418,783 827,643,639
Investments in Securities, Value 1,863,007,022 1,030,651,855
Investments in Securities, cost $ 1,863,045,096 $ 1,030,473,392
Affiliated Investments [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity 84.53% 81.28%
Affiliated Investments, Value $ 1,587,418,783 $ 827,643,639
Affiliated Investments, at Cost $ 1,587,305,566 $ 827,467,069
U.S. Treasury Bills, 0.090% Due April 7, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1],[2] 1.60%  
United States Treasury Obligations, Value [1],[2] $ 29,999,300  
United States Treasury Obligations, Principal Value [1],[2] $ 30,000,000  
Investment Interest Rate [1],[2] 0.09%  
Investment Maturity Date [1],[2] Apr. 07, 2022  
Restricted for maintenance margin $ 262,584,700  
U.S. Treasury Bills, 0.170% Due April 21, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1] 0.69%  
United States Treasury Obligations, Value [1] $ 12,999,115  
United States Treasury Obligations, Principal Value [1] $ 13,000,000  
Investment Interest Rate [1] 0.17%  
Investment Maturity Date [1] Apr. 21, 2022  
U.S. Treasury Bills, 0.190% Due April 28, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1],[2] 2.14%  
United States Treasury Obligations, Value [1],[2] $ 39,996,092  
United States Treasury Obligations, Principal Value [1],[2] $ 40,000,000  
Investment Interest Rate [1],[2] 0.19%  
Investment Maturity Date [1],[2] Apr. 28, 2022  
Restricted for maintenance margin $ 262,584,700  
U.S. Treasury Bills, 0.360% Due June 2, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1],[2] 1.33%  
United States Treasury Obligations, Value [1],[2] $ 24,986,007  
United States Treasury Obligations, Principal Value [1],[2] $ 25,000,000  
Investment Interest Rate [1],[2] 0.36%  
Investment Maturity Date [1],[2] Jun. 02, 2022  
Restricted for maintenance margin $ 262,584,700  
U.S. Treasury Bills, 0.380% Due June 9, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1],[2] 1.06%  
United States Treasury Obligations, Value [1],[2] $ 19,985,702  
United States Treasury Obligations, Principal Value [1],[2] $ 20,000,000  
Investment Interest Rate [1],[2] 0.38%  
Investment Maturity Date [1],[2] Jun. 09, 2022  
Restricted for maintenance margin $ 262,584,700  
U.S. Treasury Bills, 0.220% Due July 7, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1],[2] 1.60%  
United States Treasury Obligations, Value [1],[2] $ 29,954,014  
United States Treasury Obligations, Principal Value [1],[2] $ 30,000,000  
Investment Interest Rate [1],[2] 0.22%  
Investment Maturity Date [1],[2] Jul. 07, 2022  
Restricted for maintenance margin $ 262,584,700  
U.S. Treasury Bills, 0.365% Due July 21, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1],[2] 0.69%  
United States Treasury Obligations, Value [1],[2] $ 12,973,495  
United States Treasury Obligations, Principal Value [1],[2] $ 13,000,000  
Investment Interest Rate [1],[2] 0.365%  
Investment Maturity Date [1],[2] Jul. 21, 2022  
Restricted for maintenance margin $ 262,584,700  
U.S. Treasury Bills, 0.380% Due July 28, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1],[2] 2.12%  
United States Treasury Obligations, Value [1],[2] $ 39,901,339  
United States Treasury Obligations, Principal Value [1],[2] $ 40,000,000  
Investment Interest Rate [1],[2] 0.38%  
Investment Maturity Date [1],[2] Jul. 28, 2022  
Restricted for maintenance margin $ 262,584,700  
U.S. Treasury Bills, 0.500% Due August 4, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1],[2] 2.12%  
United States Treasury Obligations, Value [1],[2] $ 39,889,792  
United States Treasury Obligations, Principal Value [1],[2] $ 40,000,000  
Investment Interest Rate [1],[2] 0.50%  
Investment Maturity Date [1],[2] Aug. 04, 2022  
Restricted for maintenance margin $ 262,584,700  
U.S. Treasury Bills, 0.670% Due September 1, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1],[2] 1.33%  
United States Treasury Obligations, Value [1],[2] $ 24,903,383  
United States Treasury Obligations, Principal Value [1],[2] $ 25,000,000  
Investment Interest Rate [1],[2] 0.67%  
Investment Maturity Date [1],[2] Sep. 01, 2022  
Restricted for maintenance margin $ 262,584,700  
United States Treasury Obligations [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1] 14.68% 19.94%
United States Treasury Obligations, Value [1] $ 275,588,239 $ 203,008,216
Investments in Securities, cost [1] $ 275,739,530 $ 203,006,323
Exchange-Traded Fund [Member] | Affiliated Investments [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [3] 4.75% 8.76%
Affiliated Investments, Value [3] $ 89,158,085 $ 89,221,438
Affiliated Investments, Shares [3] 844,700 844,700
Affiliated Investments, at Cost [3] $ 89,044,868 $ 89,044,868
Money Market Mutual Fund - Invesco Government & Agency Portfolio - Institutional Class [Member] | Affiliated Investments [Member]    
Schedule of Investments [Line Items]    
Investment Interest Rate [3] 0.25% [4] 0.03% [5]
Affiliated Investments, at Cost [3] $ 1,498,260,698 [4] $ 738,422,201 [5]
Money Market Mutual Fund - Invesco Government & Agency Portfolio - Institutional Class [Member] | Invesco Government And Agency Portfolio - Institutional Class [Member] | Affiliated Investments [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [3] 79.78% [4] 72.52% [5]
Affiliated Investments, Value [3] $ 1,498,260,698 [4] $ 738,422,201 [5]
Affiliated Investments, Shares [3] 1,498,260,698 [4] 738,422,201 [5]
US Treasury Bills, 0.040% Due January Six, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1],[6]   3.93%
United States Treasury Obligations, Value [1],[6]   $ 40,000,003
United States Treasury Obligations, Principal Value [1],[6]   $ 40,000,000
Investment Interest Rate [1],[6]   0.04%
Investment Maturity Date [1],[6]   Jan. 06, 2022
US Treasury Bills, 0.055% Due January 20, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1]   2.46%
United States Treasury Obligations, Value [1]   $ 24,999,911
United States Treasury Obligations, Principal Value [1]   $ 25,000,000
Investment Interest Rate [1]   0.055%
Investment Maturity Date [1]   Jan. 20, 2022
U.S. Treasury Bills,0.055% Due January 27, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1],[6]   7.85%
United States Treasury Obligations, Value [1],[6]   $ 79,998,800
United States Treasury Obligations, Principal Value [1],[6]   $ 80,000,000
Investment Interest Rate [1],[6]   0.055%
Investment Maturity Date [1],[6]   Jan. 27, 2022
US Treasury Bills, 0.070% Due March 10, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1]   1.77%
United States Treasury Obligations, Value [1]   $ 17,998,763
United States Treasury Obligations, Principal Value [1]   $ 18,000,000
Investment Interest Rate [1]   0.07%
Investment Maturity Date [1]   Mar. 10, 2022
U.S. Treasury Bills, 0.050% Due February 3, 2022 [Member]    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1],[6]   3.93%
United States Treasury Obligations, Value [1],[6]   $ 40,010,739
United States Treasury Obligations, Principal Value [1],[6]   $ 40,011,600
Investment Interest Rate [1],[6]   0.05%
Investment Maturity Date [1],[6]   Feb. 03, 2022
US Treasury Bills, 0.080% Due March 11, 2021 [Member]    
Schedule of Investments [Line Items]    
Restricted for maintenance margin   $ 159,984,000
[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 $262,584,700 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, 2022.
[5] The rate shown is the 7-day SEC standardized yield as of December 31, 2021.
[6] United States Treasury Obligations of $159,984,000 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts.