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Statement of Changes in Shareholders' Equity - USD ($)
Total
General Shares [Member]
Shares [Member]
Balance - Value at Dec. 31, 2021 $ 112,651,902 $ 1,959 $ 112,649,943
Balance - Shares at Dec. 31, 2021   40 2,300,000
Purchases of Shares - Value 48,127,811   $ 48,127,811
Purchases of Shares - Shares     1,000,000
Redemption of Shares - Value (46,762,915)   $ (46,762,915)
Redemption of Shares - Shares     (1,000,000)
Net Increase (Decrease) due to Share Transactions, value 1,364,896   $ 1,364,896
Return of Capital Distributions (500,466) $ (9) (500,457)
Net Income (Loss)      
Net Investment Income (Loss) 560,574 9 560,565
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts (12,248,607) (136) (12,248,471)
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts 8,322,190 93 8,322,097
Net Income (Loss) (3,365,843) (34) (3,365,809)
Net Change in Shareholders' Equity, value (2,501,413) (43) (2,501,370)
Balance - Value at Dec. 31, 2022 110,150,489 $ 1,916 $ 110,148,573
Balance - Shares at Dec. 31, 2022   40 2,300,000
Purchases of Shares - Value 111,403,530   $ 111,403,530
Purchases of Shares - Shares     2,250,000
Redemption of Shares - Value (78,825,031)   $ (78,825,031)
Redemption of Shares - Shares     (1,600,000)
Net Increase (Decrease) due to Share Transactions, value 32,578,499   $ 32,578,499
Net Increase (Decrease) due to Share Transactions, shares     650,000
Return of Capital Distributions (6,702,869) $ (89) $ (6,702,780)
Net Income (Loss)      
Net Investment Income (Loss) 6,587,121 87 6,587,034
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts 7,541,621 133 7,541,488
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts (2,663,966) (47) (2,663,919)
Net Income (Loss) 11,464,776 173 11,464,603
Net Change in Shareholders' Equity, value 37,340,406 84 $ 37,340,322
Net Change in Shareholders' Equity, shares     650,000
Balance - Value at Dec. 31, 2023 147,490,895 $ 2,000 $ 147,488,895
Balance - Shares at Dec. 31, 2023   40 2,950,000
Purchases of Shares - Value 33,792,953   $ 33,792,953
Purchases of Shares - Shares     550,000
Redemption of Shares - Value (55,950,715)   $ (55,950,715)
Redemption of Shares - Shares     (950,000)
Net Increase (Decrease) due to Share Transactions, value (22,157,762)   $ (22,157,762)
Net Increase (Decrease) due to Share Transactions, shares     (400,000)
Return of Capital Distributions (6,783,254) $ (102) $ (6,783,152)
Net Income (Loss)      
Net Investment Income (Loss) 6,953,120 104 6,953,016
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts 38,573,595 561 38,573,034
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts (9,245,406) (134) (9,245,272)
Net Income (Loss) 36,281,309 531 36,280,778
Net Change in Shareholders' Equity, value 7,340,293 429 $ 7,339,864
Net Change in Shareholders' Equity, shares     (400,000)
Balance - Value at Dec. 31, 2024 $ 154,831,188 $ 2,429 $ 154,828,759
Balance - Shares at Dec. 31, 2024   40 2,550,000