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v3.20.2

FINANCIAL HIGHLIGHTS - Per share performance data and other supplemental financial data (Details) - $ / shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Per Share Operating Performance: |  |  |  |  |
Net asset value, beginning of period |  | $ 12.43 | $ 23.42 | $ 16.91 | $ 24.35
Total income (loss) |  | (2.13) | (3.52) | (6.57) | (4.36)
Total expenses |  | (0.05) | (0.07) | (0.09) | (0.16)
Net increase (decrease) in net asset value |  | (2.18) | (3.59) | (6.66) | (4.52)
Net asset value, end of period |  | $ 10.25 | $ 19.83 | $ 10.25 | $ 19.83
Total Return |  | (17.54%) | (15.33%) | (39.38%) | (18.56%)
Ratios to Average Net Assets |  |  |  |  |
Total income (loss) |  | (18.27%) | (14.40%) | (47.61%) | (13.85%)
Management fees | [1] | 0.60% | 0.60% | 0.60% | 0.60%
Expenses excluding management fees | [1] | 0.96% | 0.39% | 0.84% | 0.78%
Net income (loss) |  | (18.66%) | (14.74%) | (48.33%) | (14.53%)
[1] | Annualized.

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