Pioneer Opportunity Fund, LP - A4
Pioneer Fund · adviser of record: Pioneer Fund II Management Corp · 2022 vintage
Pioneer Opportunity Fund, LP - A4 is a 2022 venture fund managed by Pioneer Fund, with $1.6mm raised (Form D, amount sold). It reported $1mm in gross assets at year-end 2025, 0.64x its size, against a peak of $1.5mm in 2023.
- Latest value held
- $1mm year-end 2025
- Peak
- $1.5mm year-end 2023
- Fund size
- $1.6mm Form D, amount sold
- Held vs. size
- 0.64x peak 0.90x
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 | $1mm | 0.64x | -29% over 2 yrs |
| 2023 | $1.5mm | 0.90x | – |
Other funds from Pioneer Fund
- Pioneer Fund III (U.S.) L.P. 2023
- Pioneer AI Fund, LP 2023
- Pioneer Fund AF 24 L.P. 2023
- Pioneer Bio Health Fund, LP 2023
- Pioneer Opportunity Fund, LP - B3 2023
- Pioneer Opportunity Fund, LP - B4 2023
- Pioneer Opportunity Fund, LP - B1 2023
- Pioneer Opportunity Fund, LP - A2 2022
- Pioneer Opportunity Fund, LP - A1 2022
- Pioneer Fund Access Fund LP, A Series Of Pioneer Master Fund LP 2021
- Pioneer Fund B, A Series Of Pioneer Fund Syndicates, LLC 2021
- Pioneer Fund II (US) L.P. 2020
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 805-5850439106. Data updated October 13, 2026.
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