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Statements of Cash Flows (Unaudited) - USD ($)
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Cash flows from operating activities:    
Net Income (Loss) $ 837,198,946 $ 500,667,110
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Cost of securities purchased (2,147,589,117) (823,822,998)
Proceeds from securities sold and matured 1,012,029,600 239,999,998
Cost of affiliated investments purchased (4,866,627,842) (2,059,503,193)
Proceeds from affiliated investments sold 4,203,781,822 1,463,223,913
Net accretion of discount on United States Treasury Obligations (3,333,194) (236,251)
Net realized (gain) loss on United States Treasury Obligations and Affiliated Investments 1 2
Net change in unrealized (gain) loss on United States Treasury Obligations, Affiliated Investments and LME Commodity Futures Contracts 122,861,780 12,530,522
Change in operating assets and liabilities:    
Dividends from affiliates (2,346,921) (17,527)
Variation margin - Commodity Futures Contracts 105,484,139 (23,749,830)
LME Commodity Futures Contracts 4,774,884 893,612
Management fees 1,266,354 967,315
Brokerage commissions and fees 6,256 (651)
Net cash provided by (used in) operating activities (732,493,292) (689,047,978)
Cash flows from financing activities:    
Proceeds from purchases of Shares 1,803,880,778 1,144,882,483
Redemption of Shares (1,071,387,486) (463,375,985)
Net cash provided by (used in) financing activities 732,493,292 681,506,498
Net change in cash 0 (7,541,480)
Cash at beginning of period 0 7,541,480
Cash at end of period 0 0
Supplemental disclosure of cash flow information    
Cash paid for interest $ 45,989 $ 10,975