Statement of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net Income (Loss)	$ (30,049,569)	$ 16,968,538
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Cost of securities purchased	(27,885,153)	(75,646,600)
Proceeds from securities sold and matured	28,964,938	71,981,372
Cost of affiliated investments purchased	(65,283,056)	(81,540,382)
Proceeds from affiliated investments sold	93,128,429	81,739,042
Net accretion of discount on United States Treasury Obligations	(89,570)	(420,425)
Net realized (gain) loss on United States Treasury Obligations and Affiliated Investments	(20,521)	461
Net change in unrealized (gain) loss on United States Treasury Obligations and Affiliated Investments	(72,588)	(11,620)
Change in operating assets and liabilities:
Variation margin - Commodity Futures Contracts	(429,472)	(364,661)
Dividends from affiliates	7,211	(1,933)
Management fees	(15,004)	(19,582)
Brokerage commissions and fees	59	287
Net cash provided by (used in) operating activities	(1,744,296)	12,684,497
Cash flows from financing activities:
Proceeds from purchases of Shares	30,765,132	8,264,339
Redemption of Shares	(29,020,836)	(19,498,055)
Increase (decrease) in payable for amount due to custodian		(1,367,641)
Increase (decrease) in payable for distributions		(83,140)
Net cash provided by (used in) financing activities	1,744,296	(12,684,497)
Supplemental disclosure of cash flow information
Cash paid for interest	$ 1,952	$ 3,575