Statements of Financial Condition - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Assets
United States Treasury Obligations, at value (cost $409,385,046 and $460,218,432, respectively)	$ 409,384,745	$ 460,172,505
Affiliated Investments, at value (cost $102,405,445 and $81,329,032, respectively)	102,216,801	81,011,698
Other investments:
Cash held by custodian	4,705,705	0
Receivable for:
Dividends from affiliates	58,722	22,709
Total assets	516,365,973	541,206,912
Other investments:
Variation margin payable- Currency Futures Contracts	1,213,618	2,774,899
Payable for:
Shares redeemed	20,470,746	4,799,246
Due to custodian		539,669
Management fees	324,363	361,047
Brokerage commissions and fees	4,654	4,498
Total liabilities	22,013,381	8,479,359
Commitments and Contingencies (Note 10)
Equity
Shareholder's equity—General Shares	1,019	960
Shareholders' equity—Shares	494,351,573	532,726,593
Total shareholders' equity	494,352,592	532,727,553
Total liabilities and equity	$ 516,365,973	$ 541,206,912
General Shares outstanding	40	40
Shares outstanding	19,400,000	22,200,000
Net asset value per share	$ 25.48	$ 24.00
Market value per share	$ 25.47	$ 24.04