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Statements of Financial Condition (Unaudited) - USD ($)
Sep. 30, 2024
Dec. 31, 2023
Assets    
United States Treasury Obligations, at value (cost $297,391,008 and $342,603,310, respectively) $ 297,686,525 $ 342,956,644
Investments, at value 751,154,945 710,772,102
Other investments:    
Cash held by custodian   4,721,066
Receivable for:    
Fund shares sold   2,074,305
Dividends from affiliates 1,214,425 1,403,400
Total assets 752,369,370 718,970,873
Other investments:    
Variation margin payable- Commodity Futures Contracts 13,370,792 10,687,335
Payable for:    
Distributions   336,157
Fund shares reacquired   3,157,545
Management fees 465,337 520,593
Brokerage commissions and fees 5,028 2,673
Total liabilities 13,841,157 14,704,303
Commitments and Contingencies (Note 10)
Equity    
Shareholder's equity—General Shares 1,042 830
Shareholders' equity—Shares 738,527,171 704,265,740
Total shareholders' equity 738,528,213 704,266,570
Total liabilities and equity $ 752,369,370 $ 718,970,873
General Shares outstanding 40 40
Shares outstanding 28,350,000 33,950,000
Net asset value per share $ 26.05 $ 20.74
Market value per share $ 26.10 $ 20.73
Investment, Affiliated [Member]    
Assets    
Investments, at value $ 453,468,420 $ 367,815,458