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Financial Highlights
9 Months Ended
Sep. 30, 2011
Financial Highlights [Abstract] 
Financial Highlights
2. Financial Highlights:
Changes in the net asset value per unit for the three and nine months ended September 30, 2011 and 2010 were as follows:
                               
    Three-Months Ended   Nine-Months Ended  
    September 30,   September 30,  
    2011     2010   2011     2010  
Net realized and unrealized gains (losses)*
  $ (24.84 )   $ 25.28     $ (80.00 )   $ (42.52 )
Interest income
    0.05       0.45       0.47       1.09  
Expenses**
    (11.72 )     (12.90 )     (35.12 )     (36.48 )
 
                       
Increase (decrease) for the period
    (36.51 )     12.83       (114.65 )     (77.91 )
Net asset value per unit, beginning of period
    1,771.84       1,722.43       1,849.98       1,813.17  
 
                       
Net asset value per unit, end of period
  $ 1,735.33     $ 1,735.26     $ 1,735.33     $ 1,735.26  
 
                       
 
*          Includes brokerage fees.
**        Excludes brokerage fees.
    Three-Months Ended   Nine-Months Ended  
    September 30,   September 30,  
    2011     2010   2011     2010  
Ratios to average net assets:***
                             
Net investment income (loss) before incentive fees****
    (8.4 )%     (8.7 )%   (8.5 )%     (8.6 )%
 
                     
Operating expenses
    8.4 %     8.8 %   8.5 %     8.7 %
Incentive fees
    %     %   %     %
 
                     
Total expenses
    8.4 %     8.8 %   8.5 %     8.7 %
 
                     
Total return:
                             
Total return before incentive fees
    (2.1 )%     0.7 %   (6.2 )%     (4.3 )%
Incentive fees
    %     %   %     %
 
                     
Total return after incentive fees
    (2.1 )%     0.7 %   (6.2 )%     (4.3 )%
 
                     
 
***   Annualized (other than incentive fees).
 
****   Interest income less total expenses.
The above ratios may vary for individual investors based on the timing of capital transactions during the period. Additionally, these ratios are calculated for the limited partner class using the limited partners’ share of income, expenses and average net assets.