Atlas Venture Fund X, L.P.
Atlas Venture · adviser of record: Atlas Venture Life Science Advisors, LLC · 2014 vintage
Atlas Venture Fund X, L.P. is a 2014 venture fund managed by Atlas Venture, with $250mm raised (Form D, amount sold). It reported $491mm in gross assets at year-end 2025, 1.96x its size, against a peak of $1.44bn in 2020.
- Latest value held
- $491mm year-end 2025
- Peak
- $1.44bn year-end 2020
- Fund size
- $250mm Form D, amount sold
- Held vs. size
- 1.96x peak 5.76x
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 | $491mm | 1.96x | +21% over 2 yrs |
| 2023 | $406mm | 1.63x | -30% |
| 2022 | $582mm | 2.33x | -33% |
| 2021 | $870mm | 3.48x | -40% |
| 2020 | $1.44bn | 5.76x | +90% |
| 2019 | $758mm | 3.03x | +10% |
| 2018 | $690mm | 2.76x | +16% |
| 2017 | $593mm | 2.37x | +56% |
| 2016 | $379mm | 1.52x | +37% |
| 2015 | $277mm | 1.11x | +129% |
| 2014 | $121mm | 0.48x | – |
Other funds from Atlas Venture
- Atlas Venture Fund XIII, L.P. 2022
- Atlas Venture Opportunity Fund II, L.P. 2021
- Atlas Venture Fund XII, L.P. 2020
- Atlas Venture Opportunity Fund I, L.P. 2018
- Atlas Venture Fund XI, L.P. 2017
- Atlas Venture Fund IX, L.P. 2012
- Atlas Venture Fund VIII, L.P. 2011
- Atlas Venture Fund VI, L.P. 2011
- Atlas Venture Fund VII, L.P. 2011
- Atlas Venture Fund V, L.P. 2011
- Atlas Venture Fund IV, L.P. 2011
- Atlas Venture Fund VI GMBH And CO. KG 2011
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 805-8948047734. Data updated October 13, 2026.
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