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Financial Highlights - Summary of Financial Highlights of NAV per Share (Details) - $ / shares | 2 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025
Net Asset Value |  |  |  |
Net asset value per Share, beginning of period | $ 35.25 | $ 24.81 |  | $ 33.28
Net realized and change in unrealized gain (loss) on investments in Ether | (9.22) | 16.56 |  | 8.13
Net investment income (loss) | (0.01) | (0.02) |  | (0.06)
Net income (loss) | (9.23) | 16.54 |  | 8.07
Net asset value per Share, end of period | 26.02 | 41.35 | $ 26.02 | 41.35
Market value per Share, beginning of period | 34.6 | 25.13 |  | 33.39
Market value per Share, end of period | $ 25.94 | $ 41.48 | $ 25.94 | $ 41.48
Ratio to average Net Assets |  |  |  |
Net Investment income (loss) | (0.25%) | (0.25%) |  | (0.25%)
Expenses | 0.25% | 0.25% |  | 0.25%
Total Return, at net asset value | (26.18%) | 66.67% | 4.08% | 24.25%
Total Return, at market value | (25.03%) | 65.06% | 3.76% | 24.23%

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