Statements of Financial Condition - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents (at cost $1,846,630,713 and $2,920,517,807, respectively) (Notes 2 and 5)	$ 1,846,630,713	$ 2,920,517,807
Equity in trading accounts:
Cash and cash equivalents (at cost $144,626,242 and $249,864,944, respectively)	144,626,242	249,864,944
Unrealized gain (loss) on open commodity futures contracts	117,780,350	111,290,560
Receivable for shares sold	38,651,232	0
Dividends receivable	154,339	222,951
Interest receivable	32,182	0
Prepaid registration fees	928,407	1,276,832
ETF transaction fees receivable	2,000	5,000
Total assets	2,148,805,465	3,283,178,094
Liabilities and Partners' Capital
Payable due to Broker	57,283,329	110,778,928
Payable for shares redeemed	68,847,507	66,943,788
General Partner management fees payable (Note 3)	799,622	1,256,212
Professional fees payable	2,058,723	1,829,494
Brokerage commissions payable	187,961	235,961
Directors' fees and insurance payable	21,788	26,116
License fees payable	75,125	150,926
Total liabilities	129,274,055	181,221,425
Commitments and Contingencies (Notes 3, 4 and 5)
Partners' Capital
General Partner	0	0
Limited Partners	2,019,531,410	3,101,956,669
Total Partners' Capital	2,019,531,410	3,101,956,669
Total liabilities and partners' capital	$ 2,148,805,465	$ 3,283,178,094
Limited Partners' shares outstanding	167,200,000	265,000,000
Net asset value per share	$ 12.08	$ 11.71
Market value per share	$ 12.01	$ 11.72

Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received.

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.