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Condensed Statement of Changes in Partners' Capital - USD ($)
Total
General Partner
Limited Partners
Net income (loss) $ (15,789,632)    
Net asset value, beginning of period at Dec. 31, 2014 $ 26.59    
Net asset value, end of period at Sep. 30, 2015 $ 20.45    
Beginning Balances at Dec. 31, 2015 $ 70,533,597 $ 0 $ 70,533,597
Addition of 3,250,000 partnership shares 49,890,042 0 49,890,042
Redemption of 850,000 partnership shares (15,767,127) 0 (15,767,127)
Net income (loss) 18,181,911 0 18,181,911
Ending Balances at Sep. 30, 2016 $ 122,838,423 $ 0 $ 122,838,423
Net asset value, beginning of period at Dec. 31, 2015 $ 17    
Net asset value, end of period at Sep. 30, 2016 $ 18.75