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FINANCIAL HIGHLIGHTS (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Per Share Operating Performance: |  |  |
Net asset value, beginning of year | $ 35.45 | $ 27.81 | $ 17.23
Total income (loss) | 0.06 | 7.95 | 10.79
Total expenses | (0.28) | (0.31) | (0.21)
Net increase (decrease) in net asset value | (0.22) | 7.64 | 10.58
Net asset value, end of year | $ 35.23 | $ 35.45 | $ 27.81
Total Return | (0.62%) | 27.47% | 61.40%
Ratios to Average Net Assets |  |  |
Total income (loss) | 0.72% | 31.17% | 53.01%
Management fees | 0.60% | 0.60% | 0.60%
Total expenses excluding management fees | 0.19% | 0.25% | 0.30%
Net income (loss) | (0.07%) | 30.32% | 52.11%

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