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FINANCIAL HIGHLIGHTS (Tables) | 9 Months Ended
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Sep. 30, 2022
FINANCIAL HIGHLIGHTS |
Schedule of per unit performance data and other supplemental financial data | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Three months ended | ​ | Nine months ended |  | Nine months ended | ​
​ | ​ | September 30, 2022 | ​ | September 30, 2021 | ​ | September 30, 2022 | ​ | September 30, 2021 | ​
​ |  | (Unaudited) |  | (Unaudited) |  | (Unaudited) |  | (Unaudited) | ​
Per Share Operating Performance: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | ​
Net asset value, beginning of period | ​ | $ | 39.48 | ​ | $ | 25.61 | ​ | $ | 27.81 | ​ | $ | 17.23 | ​
Total income (loss) | ​ |  | (6.95) | ​ |  | 1.55 | ​ |  | 4.88 | ​ |  | 10.02 | ​
Total expenses | ​ |  | (0.08) | ​ |  | (0.06) | ​ |  | (0.24) | ​ |  | (0.15) | ​
Net increase (decrease) in net asset value | ​ |  | (7.03) | ​ |  | 1.49 | ​ |  | 4.64 | ​ |  | 9.87 | ​
Net asset value, end of period | ​ | $ | 32.45 | ​ | $ | 27.10 | ​ | $ | 32.45 | ​ | $ | 27.10 | ​
Total Return | ​ |  | (17.81) | % |  | 5.82 | % |  | 16.68 | % |  | 57.28 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Ratios to Average Net Assets | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​
Total income (loss) | ​ |  | (18.84) | % |  | 4.62 | % |  | 22.56 | % |  | 47.37 | %
Management fees# | ​ |  | 0.60 | % |  | 0.60 | % |  | 0.60 | % |  | 0.60 | %
Total expenses excluding management fees# | ​ |  | 0.23 | % |  | 0.31 | % |  | 0.28 | % |  | 0.30 | %
Net income (loss) | ​ |  | (19.05) | % |  | 4.39 | % |  | 21.90 | % |  | 46.70 | %
# Annualized.

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