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FINANCIAL HIGHLIGHTS (Details) - $ / shares | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Per Share Operating Performance: |  |
Net asset value, beginning of year | $ 12.91 | $ 20.91
Total income (loss) | 2.96 | (12.91)
Total expenses | (0.03) | (0.03)
Net increase (decrease) in net asset value | 2.93 | (12.94)
Net asset value, end of year | $ 15.84 | $ 7.97
Total Return | 22.70% | (61.88%)
Ratios to Average Net Assets |  |
Total income (loss) | 21.56% | (95.57%)
Management fees | 0.75% | 0.75%
Total expenses excluding management fees | 0.31% | 0.43%
Expenses waived | (0.16%) | (0.28%)
Net expense excluding management fees | 0.15% | 0.15%
Net income (loss) | 21.34% | (95.80%)

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