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Condensed Statement of Changes in Partners' Capital - USD ($)
Total
General Partner
Limited Partners
Net income (loss) $ 21,093,603    
Net asset value, beginning of year at Dec. 31, 2015 $ 17    
Net asset value, end of year at Jun. 30, 2016 $ 19.34    
Beginning Balances at Dec. 31, 2016 $ 126,387,808 $ 0 $ 126,387,808
Addition of partnership shares 22,440,164 0 22,440,164
Redemption of partnership shares (13,639,335) 0 (13,639,335)
Net income (loss) (21,042,667) 0 (21,042,667)
Ending Balances at Jun. 30, 2017 $ 114,145,970 $ 0 $ 114,145,970
Net asset value, beginning of year at Dec. 31, 2016 $ 20.39    
Net asset value, end of year at Jun. 30, 2017 $ 16.79