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CONTRACTS AND AGREEMENTS (Tables)
 6 Months Ended
Jun. 30, 2018
Contractors [Abstract]  
Brokerage Commissions
 
 
For the six months

‎
ended 

‎
June 30, 2018
 
 
For the six months

‎
ended 

‎
June 30, 2017
 
Total commissions accrued to brokers
 
$
811,905
 
 
$
800,656
 
Total commissions as annualized percentage of average total net assets
 
 
0.41
%
 
 
0.34
%
Commissions accrued as a result of rebalancing
 
$
607,451
 
 
$
647,003
 
Percentage of commissions accrued as a result of rebalancing
 
 
74.82
%
 
 
80.81
%
Commissions accrued as a result of creation and redemption activity
 
$
204,454
 
 
$
153,653
 
Percentage of commissions accrued as a result of creation and redemption activity
 
 
25.18
%
 
 
19.19
%