Statements of Financial Condition (Unaudited) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Assets
United States Treasury Obligations, at value (cost $207,077,998 and $244,424,302, respectively)	$ 207,041,069	$ 244,408,079
Affiliated Investments, at value (cost $22,535,208 and $39,110,095, respectively)	22,546,692	39,094,237
Other investments:
Unrealized appreciation on LME Commodity Futures Contracts	353,581	31,489,170
Receivable for:
Dividends from affiliates	15,881	17,523
Total assets	229,957,223	315,009,009
Other investments:
LME Commodity Futures Contracts payable	19,748,317	731,031
Unrealized depreciation on LME Commodity Futures Contracts	20,127,156
Payable for:
Management fees	121,680	182,156
Brokerage commissions and fees	4,648	4,561
Total liabilities	40,001,801	917,748
Commitments and Contingencies (Note 10)
Equity
Shareholder's equity—General Shares	666	776
Shareholders' equity—Shares	189,954,756	314,090,485
Total shareholders' equity	189,955,422	314,091,261
Total liabilities and equity	$ 229,957,223	$ 315,009,009
General Shares outstanding	40	40
Shares outstanding	11,400,000	16,200,000
Net asset value per share	$ 16.66	$ 19.39
Market value per share	$ 16.62	$ 19.43