Statements of Cash Flows - USD ($)
|
12 Months Ended |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Cash Flows from Operating Activities: |
|
|
|
| Net income (loss) |
$ 29,373,365
|
$ (27,954,946)
|
$ (18,806,073)
|
| Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |
|
|
|
| (Increase) decrease in commodity futures trading account - cash and cash equivalents |
22,323,683
|
(9,535,467)
|
(16,237,347)
|
| Unrealized (gain) loss on open futures contracts |
(37,249,404)
|
2,875,569
|
18,738,510
|
| (Increase) decrease in dividends receivable |
(10,590)
|
436
|
578
|
| (Increase) decrease in ETF transaction fees receivable |
0
|
350
|
0
|
| Increase (decrease) in payable due to Broker |
15,112,791
|
0
|
0
|
| Increase (decrease) in General Partner management fees payable |
30,247
|
16,068
|
(14,893)
|
| Increase (decrease) in professional fees payable |
(73,070)
|
(76,611)
|
(61,346)
|
| Increase (decrease) in brokerage commissions payable |
2,200
|
3,150
|
(200)
|
| Increase (decrease) in directors' fees and insurance payable |
697
|
726
|
(1,046)
|
| Increase (decrease) in license fees payable |
2,276
|
1,118
|
(1,075)
|
| Increase (decrease) in registration fees payable |
0
|
0
|
(153)
|
| Net cash provided by (used in) operating activities |
29,512,195
|
(34,669,607)
|
(16,383,045)
|
| Cash Flows from Financing Activities: |
|
|
|
| Addition of partnership shares |
56,075,976
|
89,295,970
|
5,507,498
|
| Redemption of partnership shares |
(29,595,130)
|
(26,710,614)
|
(15,044,128)
|
| Net cash provided by (used in) financing activities |
26,480,846
|
62,585,356
|
(9,536,630)
|
| Net Increase (Decrease) in Cash and Cash Equivalents |
55,993,041
|
27,915,749
|
(25,919,675)
|
| Cash and Cash Equivalents, beginning of year |
61,380,282
|
33,464,533
|
59,384,208
|
| Cash and Cash Equivalents, end of year |
$ 117,373,323
|
$ 61,380,282
|
$ 33,464,533
|