/

Investors / United States / Bullpen Capital / Co-investors

Bullpen Capital co-investors

Who invests alongside Bullpen Capital · Venture capital · San Francisco, CA, United States

Bullpen Capital shares at least one checked portfolio company with 308 other investors. It backs companies most often with Western Technology Investment (11), Forefront Venture Partners (5) and Y Combinator (5), and 90% of its 83 checked companies have another investor VCinfo tracks.

308co-investors
75companies backed with another investorof 83 checked
90%of its portfolio is co-backed
Western Technology Investmentmost frequent co-investor11 shared companies

Co-investor network

the 14 firms it shares most with, and the companies they back together
171 shared companies42 shared companies40 shared companies28 shared companies24 shared companies16 shared companies15 shared companies15 shared companies14 shared companies14 shared companies10 shared companies10 shared companies9 shared companies8 shared companies8 shared companies7 shared companies7 shared companies7 shared companies7 shared companies7 shared companies7 shared companies6 shared companies6 shared companies5 shared companiesWestern Technology Investment: 11 shared companiesWestern Technology In…11Forefront Venture Partners: 5 shared companiesForefront Venture Par…5Y Combinator: 5 shared companiesY Combinator5FundersClub: 4 shared companiesFundersClub4Interplay: 4 shared companiesInterplay4Lerer Hippeau: 4 shared companiesLerer Hippeau4Battery Ventures: 3 shared companiesBattery Ventures3Blumberg Capital: 3 shared companiesBlumberg Capital3CSC Upshot: 3 shared companiesCSC Upshot3Clocktower Ventures: 3 shared companiesClocktower Ventures3Crosslink Capital: 3 shared companiesCrosslink Capital3DCVC: 3 shared companiesDCVC3Evolution VC Partners: 3 shared companiesEvolution VC Partners3LaunchCapital: 3 shared companiesLaunchCapital3
Shared portfolio companies with Bullpen CapitalFirms that also back companies together

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

All co-investors

top 60 of 308, ranked by shared portfolio companies
#InvestorSharedCompanies both back
1Western Technology Investmentwesterntech.com11Compare · Its co-investors
2Forefront Venture PartnersVenture capital5Compare · Its co-investors
3Y CombinatorAccelerator · United States5Compare · Its co-investors
4FundersClubVenture capital · United States4Compare · Its co-investors
5InterplayVenture capital · United States4Compare · Its co-investors
6Lerer HippeauVenture capital · United States4Compare · Its co-investors
7Battery VenturesVenture capital · United States3Compare · Its co-investors
8Blumberg CapitalVenture capital · United States3Compare · Its co-investors
9Clocktower VenturesVenture capital3Compare · Its co-investors
10Crosslink CapitalVenture capital · United States3Compare · Its co-investors
11CSC UpshotVenture capital · United States3Compare · Its co-investors
12DCVCVenture capital · United States3Compare · Its co-investors
13Evolution VC PartnersVenture capital · United States3Compare · Its co-investors
14LaunchCapitalVenture capital · United States3Compare · Its co-investors
15Navigate VenturesVenture capital · United States3Compare · Its co-investors
16Salesforce VenturesCorporate VC · United States3Compare · Its co-investors
17Social StartsVenture capital · United States3Compare · Its co-investors
18TechstarsAccelerator · United States3Compare · Its co-investors
19ValueStream VenturesVenture capital3Compare · Its co-investors
203L CapitalVenture capital · United States2Compare · Its co-investors
21Alpha PartnersVenture capital · United States2Compare · Its co-investors
22AngelPadAccelerator · United States2Compare · Its co-investors
23Array VenturesVenture capital · United States2Compare · Its co-investors
24Base VenturesVenture capital · United States2Compare · Its co-investors
25Bessemer Venture PartnersVenture capital · United States2Compare · Its co-investors
26Bling CapitalVenture capital · United States2Compare · Its co-investors
27Bonfire VenturesVenture capital · United States2Compare · Its co-investors
28Capital One VenturesCorporate VC · United States2Compare · Its co-investors
29Catapult VCVenture capital · United States2Compare · Its co-investors
30COLOPL NEXTVenture capital · Japan2Compare · Its co-investors
31Creative Destruction LabAccelerator · Canada2Compare · Its co-investors
32CrosscutVenture capital · United States2Compare · Its co-investors
33Drive CapitalVenture capital · United States2Compare · Its co-investors
34Entrepreneur VenturesVenture capital2Compare · Its co-investors
35GaingelsVenture capital · United States2Compare · Its co-investors
36General CatalystVenture capital · United States2Compare · Its co-investors
37Golden VenturesVenture capital · Canada2Compare · Its co-investors
38Good FriendsVenture capital · United States2Compare · Its co-investors
39Graph VenturesVenture capital · United States2Compare · Its co-investors
40Gutbrain VenturesVenture capital · United States2Compare · Its co-investors
41HaystackVenture capital · United States2Compare · Its co-investors
42HearstLabCorporate VC · United States2Compare · Its co-investors
43Hemisphere VenturesVenture capital2Compare · Its co-investors
44Hinge CapitalVenture capital · United States2Compare · Its co-investors
45Insight PartnersVenture capital · United States2Compare · Its co-investors
46Left Lane CapitalVenture capital · United States2Compare · Its co-investors
47LightbankUnited States2Compare · Its co-investors
48MaC Venture CapitalVenture capital · United States2Compare · Its co-investors
49MHS CapitalVenture capital · United States2Compare · Its co-investors
50Montage VenturesVenture capital · United States2Compare · Its co-investors
51Mucker CapitalVenture capital · United States2Compare · Its co-investors
52New Stack VenturesVenture capital · United States2Compare · Its co-investors
53Omega Venture PartnersVenture capital · United States2Compare · Its co-investors
54Parlay CapitalVenture capital2Compare · Its co-investors
55PLUS CapitalVenture capital · United States2Compare · Its co-investors
56Ridge VenturesVenture capital · United States2Compare · Its co-investors
57Santa Barbara Venture PartnersVenture capital · United States2Compare · Its co-investors
58Sapphire VenturesVenture capital · United States2Compare · Its co-investors
59StartXAccelerator2Compare · Its co-investors
60TQ VenturesVenture capital · United States2Compare · Its co-investors
Showing the top 60 of 308. GET /v1/firms/bullpencap.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 Bullpen Capital'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 Bullpen Capital's co-investors as data

Pull this ranked list, Bullpen Capital's portfolio and any firm's profile through one API key or MCP, compare portfolios side by side, and get an email when Bullpen Capital 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/bullpencap.com/coinvestors

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