Investors / United States / Haystack / Co-investors
Haystack co-investors
Who invests alongside Haystack · Venture capital · San Francisco, CA, United States
Haystack shares at least one checked portfolio company with 205 other investors. It backs companies most often with Andreessen Horowitz (7), Y Combinator (7) and General Catalyst (5), and 100% of its 35 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 Haystack; a line joins two co-investors that back at least two companies together.
All co-investors
top 60 of 205, ranked by shared portfolio companiesA co-investor is a firm whose own portfolio page lists a company that Haystack'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 Haystack's co-investors as data
Pull this ranked list, Haystack's portfolio and any firm's profile through one API key or MCP, compare portfolios side by side, and get an email when Haystack adds a company.
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- Full listsEvery portfolio row and two-firm overlap
- API and MCP100 REST or MCP calls a month, one key
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$ curl -H "X-API-Key: YOUR_KEY" \
https://api.vcinfo.io/v1/firms/haystack.vc/coinvestors
# also
GET /v1/firms/haystack.vc
GET /v1/firms/haystack.vc/portfolio