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CONTRACTS AND AGREEMENTS (Tables) | 12 Months Ended
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Dec. 31, 2020
CONTRACTS AND AGREEMENTS |
Schedule of brokerage commissions | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended | ​ | Year ended | ​ | Year ended | ​
​ | ​ | December 31, 2020 |  | December 31, 2019 |  | December 31, 2018 | ​
Total commissions accrued to brokers | ​ | $ | 1,879,043 | ​ | $ | 1,155,153 | ​ | $ | 1,424,713 |
Total commissions as annualized percentage of average total net assets | ​ | ​ | 0.47 | % | ​ | 0.38 | % | ​ | 0.38 | %
Commissions accrued as a result of rebalancing | ​ | $ | 1,636,443 | ​ | $ | 964,567 | ​ | $ | 1,053,158 | ​
Percentage of commissions accrued as a result of rebalancing | ​ |  | 87.09 | % | ​ | 83.50 | % |  | 73.92 | %
Commissions accrued as a result of creation and redemption activity | ​ | $ | 242,600 | ​ | $ | 190,586 | ​ | $ | 371,555 | ​
Percentage of commissions accrued as a result of creation and redemption activity | ​ |  | 12.91 | % |  | 16.50 | % |  | 26.08 | %

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