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FINANCIAL HIGHLIGHTS (Tables) | 6 Months Ended
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Jun. 30, 2023
FINANCIAL HIGHLIGHTS |
Schedule of per share performance data and other supplemental financial data | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three months ended |  | Three months ended |  | Six months ended |  | Six months ended |
​ | ​ | June 30, 2023 | ​ | June 30, 2022 | ​ | June 30, 2023 | ​ | June 30, 2022 | ​
​ | ​ | (Unaudited) | ​ | (Unaudited) | ​ | (Unaudited) | ​ | (Unaudited) | ​
Per Share Operating Performance: |  | ​ |  |  | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ |
Net asset value, beginning of period | ​ | $ | 66.47 | ​ | $ | 73.83 | ​ | $ | 70.05 | ​ | $ | 54.18 | ​
Total income (loss) | ​ |  | (2.72) | ​ |  | 6.49 | ​ | ​ | (6.19) | ​ | ​ | 26.24 | ​
Total expenses | ​ |  | (0.11) | ​ |  | (0.11) | ​ | ​ | (0.22) | ​ | ​ | (0.21) | ​
Net increase (decrease) in net asset value | ​ |  | (2.83) | ​ |  | 6.38 | ​ | ​ | (6.41) | ​ | ​ | 26.03 | ​
Net asset value, end of period | ​ | $ | 63.64 | ​ | $ | 80.21 | ​ | $ | 63.64 | ​ | $ | 80.21 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total Return | ​ |  | (4.26) | % |  | 8.64 | % | ​ | (9.15) | % | ​ | 48.04 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Ratios to Average Net Assets | ​ |  | ​ | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total income (loss) | ​ |  | (2.02) | % |  | 8.48 | % | ​ | (6.04) | % | ​ | 36.81 | %
Management fees# | ​ |  | 0.45 | % |  | 0.45 | % | ​ | 0.45 | % | ​ | 0.45 | %
Total expenses excluding management fees# | ​ |  | 0.24 | % |  | 0.09 | % | ​ | 0.23 | % | ​ | 0.14 | %
Net income (loss) | ​ |  | (2.20) | % |  | 8.35 | % | ​ | (6.38) | % | ​ | 36.52 | %
# | Annualized.

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- Definition Tabular disclosure of per unit performance data and other supplemental financial data. + References No definition available. + Details
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