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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 contracts: |  |  |  |
Realized gain (loss) on closed positions | $ 2,494,010 | $ (5,047,770) | $ 2,739,860 | $ (10,812,920)
Change in unrealized gain (loss) on open positions | (5,371,090) | 7,351,410 | (440,820) | 6,397,620
Dividend income | 1,200 | 946 | 2,376 | 1,581
Interest income | 1,263 | 1,521 | 3,268 | 2,398
Other income | 3,850 | 3,150 | 7,350 | 7,000
Total income (loss) | (2,870,767) | 2,309,257 | 2,312,034 | (4,404,321)
Expenses |  |  |  |
General Partner management fees (Note 3) | 64,190 | 62,288 | 147,463 | 105,990
Professional fees | 31,122 | 25,071 | 62,194 | 50,143
Brokerage commissions | 2,124 | 4,592 | 5,412 | 7,999
Other expenses | 3,331 | 2,647 | 6,819 | 4,484
Total expenses | 100,767 | 94,598 | 221,888 | 168,616
Expense waiver (Note 3) | (18,323) | (12,614) | (32,787) | (28,921)
Net expenses | 82,444 | 81,984 | 189,101 | 139,695
Net income (loss) | $ (2,953,211) | $ 2,227,273 | $ 2,122,933 | $ (4,544,016)
Net income (loss) per limited partnership unit | $ (2.07) | $ 1.01 | $ (0.02) | $ (3.83)
Net income (loss) per weighted average limited partnership unit | $ (1.66) | $ 1.10 | $ 0.98 | $ (2.77)
Weighted average limited partnership units outstanding | 1,779,121 | 2,024,725 | 2,167,680 | 1,643,132

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