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Financial Highlights
9 Months Ended
Sep. 30, 2013
Financial Highlights [Abstract]  
Financial Highlights
2.Financial Highlights
 
Financial Highlights for the three and nine months ended September 30, 2013, and 2012 were as follows:

 
 
For the Three Months
Ended September 30
  
For the Nine Months
Ended September 30,
 
 
 
2013
  
2012
  
2013
  
2012
 
Per Unit operating performance:
 
  
  
  
 
Net asset value at the beginning of the period:
 
$
10.65
  
$
9.98
  
$
9.69
  
$
9.77
 
 
                
Interest Income
  
(3) 
  
(3) 
  
(3) 
  
(3) 
Expenses
  
(0.21
)
  
(0.21
)
  
(0.63
)
  
(0.62
)
Realized/Unrealized Income (Loss) (1)
  
(0.22
)
  
0.50
   
1.16
   
1.12
 
Net Income (Loss)
  
(0.43
)
  
0.29
   
0.53
   
0.50
 
 
                
Net asset value, September 30:
 
$
10.22
  
$
10.27
  
$
10.22
  
$
10.27
 
 
                
Ratios to average net assets:
                
Net Investment Loss  (2)
  
(8.2
)%
  
(8.0
)%
  
(8.1
)%
  
(8.1
)%
Expenses before Incentive Fees (2)
  
8.2
%
  
8.0
%
  
8.2
%
  
8.2
%
Expenses after Incentive Fees (2)
  
8.2
%
  
8.0
%
  
8.2
%
  
8.2
%
Net Income (Loss)  (2)
  
(16.4
)%
  
12.1
%
  
8.3
%
  
7.3
%
Total return before incentive fees
  
(4.0
)%
  
2.9
%
  
5.5
%
  
5.1
%
Total return after incentive fees
  
(4.0
)%
  
2.9
%
  
5.5
%
  
5.1
%

(1)Realized/Unrealized Income (Loss) is a balancing amount necessary to reconcile the change in net asset value per Unit with the other per Unit information.

(2)Annualized (except for incentive fees if applicable).

(3)Amounts less than $0.005 per Unit.