Investors / United States / Addition / Co-investors
Addition co-investors
Who invests alongside Addition · Venture capital · New York, NY, United States
Addition shares at least one checked portfolio company with 247 other investors. It backs companies most often with Lightspeed Venture Partners (4), SV Angel (4) and 137 Ventures (3), and 100% of its 21 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 Addition; a line joins two co-investors that back at least two companies together.
All co-investors
top 60 of 247, ranked by shared portfolio companiesA co-investor is a firm whose own portfolio page lists a company that Addition'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 Addition's co-investors as data
Pull this ranked list, Addition's portfolio and any firm's profile through one API key or MCP, compare portfolios side by side, and get an email when Addition adds a company.
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$ curl -H "X-API-Key: YOUR_KEY" \
https://api.vcinfo.io/v1/firms/addition.com/coinvestors
# also
GET /v1/firms/addition.com
GET /v1/firms/addition.com/portfolio