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Statements of Income and Expense (Unaudited) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Income    
Interest Income $ 2,208,603 $ 2,077,793
Dividends from Affiliates 594,158 111,381
Total Income 2,802,761 2,189,174
Expenses    
Management Fees 1,005,079 1,444,502
Brokerage Commissions and Fees 76,988 97,869
Interest Expense 5,250 3,838
Total Expenses 1,087,317 1,546,209
Less: Waivers (28,406) (31,412)
Net Expenses 1,058,911 1,514,797
Net Investment Income (Loss) 1,743,850 674,377
Net Realized Gain (Loss) on    
United States Treasury Obligations (1,430) (745)
Commodity Futures Contracts (13,814,281) (17,710,712)
Net Realized Gain (Loss) (13,815,711) (17,711,457)
Net Change in Unrealized Gain (Loss) on    
United States Treasury Obligations 13,601 (110,625)
Affiliated Investments 37,485 307,377
Commodity Futures Contracts (1,220,892) 16,220,187
Net Change in Unrealized Gain (Loss) (1,169,806) 16,416,939
Net Realized and Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts (14,985,517) (1,294,518)
Net Income (Loss) $ (13,241,667) $ (620,141)