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FINANCIAL HIGHLIGHTS (Tables) | 3 Months Ended
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Mar. 31, 2024
FINANCIAL HIGHLIGHTS |
Summary of per share performance data and other supplemental financial data | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Three months ended | ​
​ |  | March 31, 2024 |  | March 31, 2023 | ​
​ | ​ | (Unaudited) | ​ | (Unaudited) | ​
Per Share Operating Performance: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net asset value, beginning of period | ​ | $ | 27.39 | ​ | $ | 28.26 | ​
Total income (loss) | ​ |  | 4.66 | ​ |  | (1.57) | ​
Total expenses | ​ |  | (0.09) | ​ |  | (0.06) | ​
Net increase (decrease) in net asset value | ​ |  | 4.57 | ​ |  | (1.63) | ​
Net asset value, end of period | ​ | $ | 31.96 | ​ | $ | 26.63 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total Return | ​ | ​ | 16.68 | % | ​ | (5.77) | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Ratios to Average Net Assets | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total income (loss) | ​ | ​ | 15.49 | % | ​ | (5.69) | %
Management fees# | ​ | ​ | 0.75 | % | ​ | 0.75 | %
Total expenses excluding management fees# | ​ | ​ | 0.45 | % | ​ | 0.14 | %
Net income (loss) | ​ | ​ | 15.20 | % | ​ | (5.90) | %
# | Annualized.
​

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