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v3.20.2

FINANCIAL HIGHLIGHTS - Per share performance data and other supplemental financial data (Details) - $ / shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Per Share Operating Performance: |  |  |  |  |
Net asset value, beginning of period |  | $ 10.25 | $ 19.83 | $ 16.91 | $ 24.35
Total income (loss) |  | 1.14 | 0.16 | (5.43) | (4.20)
Total expenses |  | (0.04) | (0.06) | (0.13) | (0.22)
Net increase (decrease) in net asset value |  | 1.10 | 0.10 | (5.56) | (4.42)
Net asset value, end of period |  | $ 11.35 | $ 19.93 | $ 11.35 | $ 19.93
Total Return |  | 10.73% | 0.50% | (32.88%) | (18.15%)
Ratios to Average Net Assets |  |  |  |  |
Total income (loss) |  | 14.92% | 5.62% | (36.50%) | (7.66%)
Management fees | [1] | 0.60% | 0.60% | 0.60% | 0.60%
Expenses excluding management fees | [1] | 0.73% | 0.67% | 0.81% | 0.74%
Net income (loss) |  | 14.59% | 5.30% | (37.56%) | (8.66%)
[1] | Annualized.

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