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FINANCIAL HIGHLIGHTS (Tables) | 12 Months Ended
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Dec. 31, 2023
FINANCIAL HIGHLIGHTS |
Summary of per share performance data and other supplemental financial data | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year ended |  | Year ended |  | Year ended |
​ | ​ | December 31, 2023 | ​ | December 31, 2022 | # | December 31, 2021 | #
Per Share Operating Performance: |  | ​ |  |  | ​ |  |  | ​ |  | ​
Net asset value, beginning of year | ​ | $ | 56.90 | # | $ | 49.56 | ​ | $ | 36.78 | ​
Total income (loss) | ​ |  | (36.26) | ​ |  | 8.25 | ​ |  | 13.34 | ​
Total expenses | ​ |  | (0.28) | ​ |  | (0.91) | ​ |  | (0.56) | ​
Net increase (decrease) in net asset value | ​ |  | (36.54) | ​ |  | 7.34 | ​ |  | 12.78 | ​
Net asset value, end of year | ​ | $ | 20.36 | ​ | $ | 56.90 | ​ | $ | 49.56 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total Return | ​ |  | (64.22) | % |  | 14.81 | % |  | 34.75 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Ratios to Average Net Assets | ​ |  |  | ​ |  |  | ​ |  |  | ​
Total income (loss) | ​ |  | (63.42) | % |  | 17.00 | % |  | 6.56 | %
Management fees | ​ |  | 0.60 | % |  | 0.60 | % |  | 0.60 | %
Total expenses excluding management fees | ​ |  | 0.41 | % |  | 0.46 | % |  | 0.51 | %
Net income (loss) | ​ |  | (64.43) | % |  | 15.94 | % |  | 5.45 | %
# On January 23, 2024 there was a 1-for-4 reverse share split. The Financial Highlights have been adjusted for the periods shown to reflect the 1-for-4 reverse share split on a retroactive basis.

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