Statements of Financial Condition - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Assets
United States Treasury Obligations, at value (cost $147,682,624 and $405,208,278, respectively)	$ 147,718,751	$ 405,215,093
Affiliated Investments, at value (cost $199,897,682 and $94,692,742, respectively)	200,021,832	94,741,922
Other investments:
Variation margin receivable- Commodity Futures Contracts	62,967
Cash held by custodian	161,884
Receivable for:
Dividends from affiliates	73,985	44,281
Total assets	348,039,419	500,001,296
Other investments:
Variation margin payable- Commodity Futures Contracts		1,623,523
Due to custodian		3,213,714
Management fees	240,542	379,135
Brokerage commissions and fees	3,480	3,263
Total liabilities	244,022	5,219,635
Commitments and Contingencies (Note 10)
Equity
Shareholder's equity—General Shares	662	678
Shareholders' equity—Shares	347,794,735	494,780,983
Total shareholders' equity	347,795,397	494,781,661
Total liabilities and equity	$ 348,039,419	$ 500,001,296
General Shares outstanding	40	40
Shares outstanding	21,000,000	29,200,000
Net asset value per share	$ 16.56	$ 16.94
Market value per share	$ 16.56	$ 16.95