Statements of Financial Condition (Unaudited) - USD ($)		Mar. 31, 2016	Dec. 31, 2015
Assets
United States Treasury Obligations, at fair value (cost $91,962,871 and $135,975,320, respectively)	[1]	$ 91,977,743	$ 135,984,580
Cash held by custodian		5,278,880	4,850,927
Net unrealized appreciation (depreciation) on Commodity Futures Contracts		5,498,831	(13,891,219)
Total assets		102,755,454	126,944,288
Liabilities
Payable for LME contracts		927,469	12,873,124
Management fee payable		64,747	82,845
Brokerage fee payable		4,992	5,007
Total liabilities		$ 997,208	$ 12,960,976
Commitments and Contingencies (Note 9)
Equity
Shareholder's equity - General Shares		$ 496	$ 475
Shareholders' equity - Shares		101,757,750	113,982,837
Total shareholders' equity		101,758,246	113,983,312
Total liabilities and equity		$ 102,755,454	$ 126,944,288
General Shares outstanding		40	40
Shares outstanding		8,200,000	9,600,000
Net asset value per Share		$ 12.41	$ 11.87
Market value per Share		$ 12.41	$ 11.91

[1] $63,484,032 and $33,225,157, respectively is restricted for maintenance margin purposes