Statement of Financial Condition (Unaudited) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Assets
United States Treasury Obligations, at value (cost $1,371,851,699 and $2,403,904,566, respectively)	$ 1,371,935,248	$ 2,403,838,023
Affiliated investments, at value (cost $346,025,265 and $131,029,805, respectively)	346,560,479	131,029,805
Total investments, at value (cost $1,717,876,964 and $2,534,934,371, respectively)	1,718,495,727	2,534,867,828
Cash held by custodian	9,198,464	5,015,157
Receivable for:
Dividends from affiliates	49,514	42,071
LME contracts	7,065,336	2,261,914
Variation margin	31,247,976	454,471
Net unrealized appreciation (depreciation) on Commodity Futures Contracts	21,172,303	16,601,502
Total assets	1,787,229,320	2,559,242,943
Payable for:
Management fee	1,202,211	1,773,390
Brokerage commissions and fees	3,035	5,014
Total liabilities	1,205,246	1,778,404
Commitments and Contingencies (Note 10)
Equity
Shareholder's equity—General Shares	578	633
Shareholders' equity—Shares	1,786,023,496	2,557,463,906
Total shareholders' equity	1,786,024,074	2,557,464,539
Total liabilities and equity	$ 1,787,229,320	$ 2,559,242,943
General Shares outstanding	40	40
Shares outstanding	123,600,000	161,600,000
Net asset value per share	$ 14.45	$ 15.83
Market value per share	$ 14.47	$ 15.84