/

Investors / United States / Flagship Pioneering / Co-investors

Flagship Pioneering co-investors

Who invests alongside Flagship Pioneering · Investor · MA, United States

Flagship Pioneering shares at least one checked portfolio company with 36 other investors. It backs companies most often with Altitude Life Science Ventures (5), ARCH Venture Partners (3) and Modi Ventures (3), and 55% of its 29 checked companies have another investor VCinfo tracks.

36co-investors
16companies backed with another investorof 29 checked
55%of its portfolio is co-backed
Altitude Life Science Venturesmost frequent co-investor5 shared companies

Co-investor network

the 14 firms it shares most with, and the companies they back together
10 shared companies7 shared companies6 shared companies6 shared companies5 shared companies5 shared companies5 shared companies3 shared companies3 shared companies2 shared companies2 shared companies2 shared companies2 shared companies2 shared companies2 shared companiesAltitude Life Science Ventures: 5 shared companiesAltitude Life Science…5ARCH Venture Partners: 3 shared companiesARCH Venture Partners3Modi Ventures: 3 shared companiesModi Ventures3ARK Venture Fund: 2 shared companiesARK Venture Fund2Omega Funds: 2 shared companiesOmega Funds2RA Capital: 2 shared companiesRA Capital2Stage 1 Ventures: 2 shared companiesStage 1 Ventures2Acre Venture Partners: 1 shared companiesAcre Venture Partners1Aldea Ventures: 1 shared companiesAldea Ventures1Alumni Ventures: 1 shared companiesAlumni Ventures1Atinum Investment: 1 shared companiesAtinum Investment1Ben Jen Holdings: 1 shared companiesBen Jen Holdings1Blue Horizon: 1 shared companiesBlue Horizon1Catalio Capital Management: 1 shared companiesCatalio Capital Manag…1
Shared portfolio companies with Flagship PioneeringFirms that also back companies together

Circle size is the number of companies shared with Flagship Pioneering; a line joins two co-investors that back at least two companies together.

All co-investors

ranked by shared portfolio companies
#InvestorSharedCompanies both back
1Altitude Life Science VenturesVenture capital · United States5Compare · Its co-investors
2ARCH Venture PartnersVenture capital · United States3Compare · Its co-investors
3Modi VenturesVenture capital · United States3Compare · Its co-investors
4ARK Venture Fundark-funds.com2Compare · Its co-investors
5Omega FundsVenture capital · United States2Compare · Its co-investors
6RA CapitalVenture capital2Compare · Its co-investors
7Stage 1 VenturesVenture capital · United States2Compare · Its co-investors
8Acre Venture PartnersVenture capital1Compare · Its co-investors
9Aldea VenturesVenture capital · Spain1Compare · Its co-investors
10Alumni VenturesVenture capital · United States1Compare · Its co-investors
11Atinum InvestmentVenture capital · South Korea1Compare · Its co-investors
12Ben Jen Holdingsbenjenholdings.com1Compare · Its co-investors
13Blue HorizonVenture capital · Switzerland1Compare · Its co-investors
14Catalio Capital ManagementVenture capital · United States1Compare · Its co-investors
15Chugai Venture FundCorporate VC · United States1Compare · Its co-investors
16Dauntless VenturesVenture capital1Compare · Its co-investors
17Duke Capital PartnersVenture capital · United States1Compare · Its co-investors
18F-Prime CapitalVenture capital · United States1Compare · Its co-investors
19General CatalystVenture capital · United States1Compare · Its co-investors
20Global Health Investment CorporationUnited States1Compare · Its co-investors
21HSGVenture capital · Hong Kong1Compare · Its co-investors
22IQTVenture capital · United States1Compare · Its co-investors
23LG Technology VenturesCorporate VC · United States1Compare · Its co-investors
24Lilly Asia VenturesVenture capital · China1Compare · Its co-investors
25Mandra CapitalVenture capital · Hong Kong1Compare · Its co-investors
26March CapitalVenture capital · United States1Compare · Its co-investors
27Nextech InvestVenture capital · Switzerland1Compare · Its co-investors
28nVenturesVenture capital · Singapore1Compare · Its co-investors
29Premji InvestVenture capital1Compare · Its co-investors
30Prime Movers LabVenture capital1Compare · Its co-investors
31Samsung NEXTCorporate VC · United States1Compare · Its co-investors
32SofinnovaVenture capital · United States1Compare · Its co-investors
33SoftBank Vision FundVenture capital · United Kingdom1Compare · Its co-investors
34T1D FundVenture capital · United States1Compare · Its co-investors
35WAGMI Ventureswagmiventures.io1Compare · Its co-investors
36Western Technology Investmentwesterntech.com1Compare · Its co-investors
Take this list with you. GET /v1/firms/flagshippioneering.com/coinvestors returns the ranked list as JSON for a CRM, a sheet or an AI agent: 25 firms a call on the free plan, 100 on Pro.
Get free API keyAPI docs

A co-investor is a firm whose own portfolio page lists a company that Flagship Pioneering's page lists too, both checked against the company's site. It shows who backs the same companies, not who joined the same round. How the data is graded

Free account · no card

Get Flagship Pioneering's co-investors as data

Pull this ranked list, Flagship Pioneering's portfolio and any firm's profile through one API key or MCP, compare portfolios side by side, and get an email when Flagship Pioneering adds a company.

Work email, sign-in link by email. Already have an account? Log in
  • Ask AI5 plain-English investor searches a day
  • Full listsEvery portfolio row and two-firm overlap
  • API and MCP100 REST or MCP calls a month, one key
  • AlertsFollow 5 investors for portfolio and fund changes
VCinfo API
$ curl -H "X-API-Key: YOUR_KEY" \
  https://api.vcinfo.io/v1/firms/flagshippioneering.com/coinvestors

# also
GET /v1/firms/flagshippioneering.com
GET /v1/firms/flagshippioneering.com/portfolio
The same data as an MCP server for Claude, Cursor and other AI tools. Set up MCP · Docs · Pricing