Investors / Japan / 15th Rock / Co-investors
15th Rock co-investors
Who invests alongside 15th Rock · Venture capital · Yokohama, Japan
15th Rock shares at least one checked portfolio company with 120 other investors. It backs companies most often with Global Brain (5), Beta Venture Capital (3) and Hiroshima Venture Capital (3), and 84% of its 37 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 15th Rock; a line joins two co-investors that back at least two companies together.
All co-investors
top 60 of 120, ranked by shared portfolio companiesA co-investor is a firm whose own portfolio page lists a company that 15th Rock'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 15th Rock's co-investors as data
Pull this ranked list, 15th Rock's portfolio and any firm's profile through one API key or MCP, compare portfolios side by side, and get an email when 15th Rock adds a company.
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$ curl -H "X-API-Key: YOUR_KEY" \
https://api.vcinfo.io/v1/firms/15th-rock.com/coinvestors
# also
GET /v1/firms/15th-rock.com
GET /v1/firms/15th-rock.com/portfolio