Investors / United States / M13 / Co-investors
M13 co-investors
Who invests alongside M13 · Venture capital · New York, CA, United States
M13 shares at least one checked portfolio company with 164 other investors. It backs companies most often with Andreessen Horowitz (4), General Catalyst (3) and Alloy Fund (2), and 93% of its 30 checked companies have another investor VCinfo tracks.
Co-investor network
the 14 firms it shares most with, and the companies they back togetherCircle size is the number of companies shared with M13; a line joins two co-investors that back at least two companies together.
All co-investors
top 60 of 164, ranked by shared portfolio companiesA co-investor is a firm whose own portfolio page lists a company that M13'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
Get M13's co-investors as data
Pull this ranked list, M13's portfolio and any firm's profile through one API key or MCP, compare portfolios side by side, and get an email when M13 adds a company.
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$ curl -H "X-API-Key: YOUR_KEY" \
https://api.vcinfo.io/v1/firms/m13.co/coinvestors
# also
GET /v1/firms/m13.co
GET /v1/firms/m13.co/portfolio