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v3.20.4

FINANCIAL HIGHLIGHTS (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Per Share Operating Performance: |  |  |  |  |  |  |
Net asset value, beginning of period | [1] | $ 102.27 | [2] | $ 76.68 |  | $ 96.63 |
Total income (loss) |  | (68.95) |  | 26.34 | [1] | (19.18) | [1]
Total expenses |  | (0.25) |  | (0.75) | [1] | (0.77) | [1]
Net increase (decrease) in net asset value |  | (69.20) |  | 25.59 | [1] | (19.95) | [1]
Net asset value, end of period | [1] | $ 33.07 |  | $ 102.27 | [2] | $ 76.68 |
Total Return |  | (67.66%) |  | 33.37% | [1] | (20.65%) | [1]
Ratios to Average Net Assets |  |  |  |  |  |  |
Total income (loss) |  | (54.88%) |  | 33.77% | [1] | (15.36%) | [1]
Management fees |  | 0.45% |  | 0.45% | [1] | 0.45% | [1]
Expenses excluding management fees |  | 0.38% |  | 0.34% | [1] | 0.28% | [1]
Net income (loss) |  | (55.71%) |  | 32.97% | [1] | (16.09%) | [1]
[1] | On April 28, 2020, there was a 1-for-8 reverse share split. The Financial Highlights have been adjusted for the periods shown to reflect the 1-for-8 reverse share split on a retroactive basis.
[2] | On April 28, 2020, there was a 1-for-8 reverse share split. The Statements of Financial Condition have been adjusted for the periods shown to reflect the 1-for-8 reverse share split on a retroactive basis

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