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FINANCIAL HIGHLIGHTS (Tables) | 9 Months Ended
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Sep. 30, 2022
FINANCIAL HIGHLIGHTS |
Schedule of per share 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 | ​ | $ | 18.45 | ​ | $ | 12.75 | ​ | ​ | $ | 12.39 | ​ | $ | 9.20 | ​
Total income (loss) | ​ |  | 4.90 | ​ |  | 7.58 | ​ | ​ |  | 11.06 | ​ |  | 11.19 | ​
Total expenses | ​ |  | (0.07) | ​ |  | (0.04) | ​ | ​ |  | (0.17) | ​ |  | (0.10) | ​
Net increase (decrease) in net asset value | ​ |  | 4.83 | ​ |  | 7.54 | ​ | ​ |  | 10.89 | ​ |  | 11.09 | ​
Net asset value, end of period | ​ | $ | 23.28 | ​ | $ | 20.29 | ​ | ​ | $ | 23.28 | ​ | $ | 20.29 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total Return | ​ |  | 26.18 | % |  | 59.14 | % | ​ |  | 87.89 | % |  | 120.54 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Ratios to Average Net Assets | ​ |  |  | ​ |  |  | ​ | ​ |  |  | ​ |  |  | ​
Total income (loss) | ​ |  | 21.70 | % |  | 47.64 | % | ​ |  | 59.23 | % |  | 80.90 | %
Management fees# | ​ |  | 0.60 | % |  | 0.60 | % | ​ |  | 0.60 | % |  | 0.60 | %
Total expenses excluding management fees# | ​ |  | 0.47 | % |  | 0.46 | % | ​ |  | 0.43 | % |  | 0.60 | %
Net income (loss) | ​ |  | 21.43 | % |  | 47.37 | % | ​ |  | 58.45 | % |  | 80.00 | %
# Annualized.

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