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Condensed Statements of Operations (USD $) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Gain (loss) on trading of commodity futures contracts: |  |  |  |
Realized gain (loss) on closed contracts | $ 1,133,470 | $ (6,014,750) | $ 2,298,660 | $ (3,856,050)
Change in unrealized loss on open positions | (3,424,160) | (19,766,100) | (1,111,600) | (12,464,380)
Dividend income | 4,817 | 8,308 | 10,429 | 14,410
Interest income | 1,619 | 2,430 | 3,814 | 4,662
Other income | 2,800 | 5,250 | 5,250 | 8,400
Total income (loss) | (2,281,454) | (25,764,862) | 1,206,553 | (16,292,958)
Expenses |  |  |  |
General Partner management fees (Note 3) | 129,566 | 207,183 | 283,342 | 463,070
Professional fees | 49,959 | 37,488 | 100,777 | 75,623
Registration fees | 29,687 | 2,366 | 59,049 | 4,732
Brokerage commissions | 2,289 | 6,454 | 6,271 | 11,344
Other expenses | 8,916 | 11,806 | 18,073 | 26,244
Total expenses | 220,417 | 265,297 | 467,512 | 581,013
Net income (loss) | $ (2,501,871) | $ (26,030,159) | $ 739,041 | $ (16,873,971)
Net income (loss) per limited partnership unit | $ (0.96) | $ (7.91) | $ 0.26 | $ (5.56)
Net income (loss) per weighted average limited partnership unit | $ (1.15) | $ (7.85) | $ 0.31 | $ (4.77)
Weighted average limited partnership units outstanding | 2,182,418 | 3,316,484 | 2,373,757 | 3,538,462

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