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Schedule of Investments - Treasury Bills and Money Market Fund - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Schedule Of Investments [Line Items]    
Percentage of Shareholders' Equity 94.85% 100.26%
United States Treasury Obligations $ 0 $ 14,856,763
Total Investments in Securities 131,445,615 51,168,499
Affiliated Investments, at value   51,168,499
Investments in Securities, cost 131,445,615 51,160,945
Deposit with Commodity Broker $ 6,790,919 $ 0
Investment, Identifier [Axis]: Affiliated Investments Money Market Mutual Fund Invesco Government & Agency Portfolio, Institutional Class, 3.68%    
Schedule Of Investments [Line Items]    
Percentage of Shareholders' Equity [1],[2] 94.85%  
Shares [1],[2] 131,445,615  
Affiliated Investments, at value [1],[2] $ 131,445,615  
Investment Interest Rate [1],[2] 3.68%  
Investment Maturity Date [1],[2] Dec. 31, 2025  
Investments in Securities, cost [1],[2] $ 131,445,615  
Investment, Identifier [Axis]: Affiliated Investments Money Market Mutual Fund Invesco Government & Agency Portfolio, Institutional Class, 4.43%    
Schedule Of Investments [Line Items]    
Percentage of Shareholders' Equity [3],[4]   71.15%
Shares [3],[4]   36,311,736
Affiliated Investments, at value [3],[4]   $ 36,311,736
Investment Interest Rate [3],[4]   4.43%
Investment Maturity Date [5],[6]   Dec. 31, 2024
Investments in Securities, cost [3],[4]   $ 36,311,736
Investment, Identifier [Axis]: United States Treasury Obligations    
Schedule Of Investments [Line Items]    
Deposit with Commodity Broker   $ 4,946,500
Investment, Identifier [Axis]: United States Treasury Obligations U.S. Treasury Bill, 4.230% due April 03, 2025    
Schedule Of Investments [Line Items]    
Percentage of Shareholders' Equity [5],[6]   19.39%
United States Treasury Obligations [5],[6]   $ 9,893,336
United States Treasury Obligations, Principal Value [5],[6]   $ 10,000,000
Investment Interest Rate [5],[6]   4.23%
Investment Maturity Date [5],[6]   Apr. 03, 2025
Investment, Identifier [Axis]: United States Treasury Obligations U.S. Treasury Bills, 4.400% due March 06, 2025    
Schedule Of Investments [Line Items]    
Percentage of Shareholders' Equity [5]   9.72%
United States Treasury Obligations [5]   $ 4,963,427
United States Treasury Obligations, Principal Value [5]   $ 5,000,000
Investment Interest Rate [5]   4.40%
Investment Maturity Date [5]   Mar. 06, 2025
United States Treasury Obligations [Member]    
Schedule Of Investments [Line Items]    
Percentage of Shareholders' Equity [5]   29.11%
United States Treasury Obligations [5]   $ 14,856,763
Investments in Securities, cost [5]   $ 14,849,209
[1] 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.
[2] The rate shown is the 7-day SEC standardized yield as of December 31, 2025.
[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, 2024.
[5] 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.
[6] United States Treasury Obligations of $4,946,500 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts.