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Condensed Statements of Cash Flows - USD ($) | 9 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
Cash Flows from Operating Activities: |  |
Net income (loss) | $ 23,563,473 | $ (2,018,371)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |
Unrealized (gain) loss on open futures contracts | (278,490) | (73,620)
(Increase) decrease in receivable from General Partner | 253,375 | (60,583)
(Increase) decrease in dividends receivable | (22,587) | (4,000)
(Increase) decrease in interest receivable | 2,660 | (7,559)
(Increase) decrease in directors' fees and insurance receivable | 0 | (404)
(Increase) decrease in ETF transaction fees receivable | 350 | 350
Increase (decrease) in General Partner management fees payable | (5,854) | (13,754)
Increase (decrease) in professional fees payable | (56,795) | 53,807
Increase (decrease) in brokerage commissions payable | (2,500) | (1,860)
Increase (decrease) in directors' fees and insurance payable | 4,677 | (1,184)
Net cash provided by (used in) operating activities | 23,458,309 | (2,127,178)
Cash Flows from Financing Activities: |  |
Addition of partnership shares | 23,719,011 | 40,082,469
Redemption of partnership shares | (38,351,509) | (53,128,704)
Net cash provided by (used in) financing activities | (14,632,498) | (13,046,235)
Net Increase (Decrease) in Cash and Cash Equivalents | 8,825,811 | (15,173,413)
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of period | 92,511,503 | 111,464,877
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of period | 101,337,314 | 96,291,464
Components of Cash and Cash Equivalents: |  |
Cash and Cash Equivalents | 86,567,752 | 82,845,053
Equity in Trading Accounts: |  |
Cash and Cash Equivalents | 14,769,562 | 13,446,411
Total Cash, Cash Equivalents and Equity in Trading Accounts | $ 101,337,314 | $ 96,291,464

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