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Condensed Statements of Cash Flows (Unaudited) - USD ($) | 6 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Cash Flows from Operating Activities: |  |  |
Net income (loss) |  | $ 139,580,755 | $ 55,950,053
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |  |
Change in unrealized (gain) loss on open commodity futures contracts |  | (4,013,120) | 2,243,040
(Increase) decrease in receivable from General Partner |  | 660,603 | 80,032
(Increase) decrease in dividends receivable |  | (4,382) | (17,694)
(Increase) decrease in interest receivable |  | 7,161 | 4,902
(Increase) decrease in prepaid insurance | [1] | (46,337) | (5,165)
(Increase) decrease in prepaid registration fees |  | 94,582 | (282,978)
(Increase) decrease in prepaid reimbursement |  | 0 | (276,795)
Increase (decrease) in General Partner management fees payable |  | (24,671) | 212,744
Increase (decrease) in professional fees payable |  | 7,115 | (66,391)
Increase (decrease) in brokerage commissions payable |  | (4,130) | 12,300
Increase (decrease) in directors' fees payable |  | 235 | 1,610
Increase (decrease) in registration fees payable |  | 33,928 | 0
Net cash provided by (used in) operating activities |  | 136,291,739 | 57,855,658
Cash Flows from Financing Activities: |  |  |
Addition of partnership shares |  | 38,310,758 | 353,199,262
Redemption of partnership shares |  | (206,386,140) | (80,356,474)
Net cash provided by (used in) financing activities |  | (168,075,382) | 272,842,788
Net Increase (Decrease) in Cash and Cash Equivalents |  | (31,783,643) | 330,698,446
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of period |  |  | 345,338,258
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of period |  | $ 313,554,615 | $ 414,301,886
[1] | * Certain prior year amounts have been reclassified for consistency with the current presentation.

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