Yantacaw Capital
Venture fund · from SEC filings

Flagship Pioneering Fund VI, L.P.

Flagship Pioneering · adviser of record: Flagship Pioneering, Inc. · 2017 vintage

Flagship Pioneering Fund VI, L.P. is a 2017 venture fund managed by Flagship Pioneering, with $618mm raised (Form D, amount sold). It reported $1.44bn in gross assets at year-end 2025, 2.33x its size, against a peak of $2.3bn in 2022.

Latest value held
$1.44bn year-end 2025
Peak
$2.3bn year-end 2022
Fund size
$618mm Form D, amount sold
Held vs. size
2.33x peak 3.65x

Value held by year-end

$500mm$1bn$1.5bn$2bn$2.5bn201720182019202020212022202320242025

Gross asset value reported on Form ADV at each year-end. Dashed line: fund size. Open in the Fund Tracker

Year-endGross assets÷ sizeChange
2025$1.44bn2.33x-32% over 2 yrs
2023$2.1bn3.41x-6%
2022$2.3bn3.65x+6%
2021$2.1bn3.45x+28%
2020$1.66bn2.69x+120%
2019$756mm1.22x+18%
2018$643mm1.04x+5%
2017$613mm0.99x–

What public pensions report

InvestorAs ofCommitmentCash back (DPI)Total (TVPI)Still held
Michigan SMIB2025-12-31–––$243mm

Latest report from each pension, as multiples of paid-in capital. Michigan reports dollar value held, shown under Still held.

Other funds from Flagship Pioneering

All Flagship Pioneering funds

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 805-3980020803. Data updated October 13, 2026.

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