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CONTRACTS AND AGREEMENTS (Tables) | 6 Months Ended
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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 | %

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