ECOR1 Venture Opportunity Fund, LP
EcoR1 Capital · adviser of record: ECOR1 Capital, LLC · 2018 vintage
ECOR1 Venture Opportunity Fund, LP is a 2018 venture fund managed by EcoR1 Capital, with $78.4mm raised (Form D, amount sold). It reported $65.4mm in gross assets at year-end 2025, 0.83x its size, against a peak of $154mm in 2020.
- Latest value held
- $65.4mm year-end 2025
- Peak
- $154mm year-end 2020
- Fund size
- $78.4mm Form D, amount sold
- Held vs. size
- 0.83x peak 1.96x
Value held by year-end
Gross asset value reported on Form ADV at each year-end. Dashed line: fund size. Open in the Fund Tracker
| Year-end | Gross assets | ÷ size | Change |
|---|---|---|---|
| 2025 | $65.4mm | 0.83x | -23% over 2 yrs |
| 2023 | $85.3mm | 1.09x | -21% |
| 2022 | $107mm | 1.37x | -28% |
| 2021 | $148mm | 1.89x | -4% |
| 2020 | $154mm | 1.96x | +230% |
| 2019 | $46.7mm | 0.60x | +130% |
| 2018 | $20.3mm | 0.26x | – |
About these numbers
Gross asset value is what the manager reports holding in the fund at each fiscal year-end, on SEC Form ADV, Schedule D. It includes the GP’s own commitment and is before carried interest, so it is not the LPs’ net return, and it does not show cash already distributed. A fall in value can mean distributions, markdowns or both. Fund size is the amount sold reported on Form D, which for some funds reflects only a first close. Private fund ID 805-4249943286. Data updated October 13, 2026.
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