/

Investors / United States / PTB Ventures / Co-investors

PTB Ventures co-investors

Who invests alongside PTB Ventures · Venture capital · New York, NY, United States

PTB Ventures shares at least one checked portfolio company with 37 other investors. It backs companies most often with Accel (1), Allegis Capital (1) and Alpha Partners (1), and 100% of its 4 checked companies have another investor VCinfo tracks.

37co-investors
4companies backed with another investorof 4 checked
100%of its portfolio is co-backed
Accelmost frequent co-investor1 shared company

Co-investor network

the 14 firms it shares most with, and the companies they back together
8 shared companies7 shared companies6 shared companies4 shared companies4 shared companies3 shared companies3 shared companies2 shared companies2 shared companies2 shared companies2 shared companies2 shared companies2 shared companiesATX Venture Partners: 1 shared companiesATX Venture Partners1Accel: 1 shared companiesAccel1Allegis Capital: 1 shared companiesAllegis Capital1Alpha Partners: 1 shared companiesAlpha Partners1Beta.Ventures: 1 shared companiesBeta.Ventures1Blue Note Ventures: 1 shared companiesBlue Note Ventures1Breyer Capital: 1 shared companiesBreyer Capital1Capital Factory: 1 shared companiesCapital Factory1Capital One Ventures: 1 shared companiesCapital One Ventures1Cathay Innovation: 1 shared companiesCathay Innovation1Central Capital Ventura: 1 shared companiesCentral Capital Ventu…1Cleveland Avenue: 1 shared companiesCleveland Avenue1Costanoa Ventures: 1 shared companiesCostanoa Ventures1Courtside Ventures: 1 shared companiesCourtside Ventures1
Shared portfolio companies with PTB VenturesFirms that also back companies together

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

All co-investors

ranked by shared portfolio companies
#InvestorSharedCompanies both back
1AccelVenture capital · United States1Compare · Its co-investors
2Allegis CapitalVenture capital · United States1Compare · Its co-investors
3Alpha PartnersVenture capital · United States1Compare · Its co-investors
4ATX Venture PartnersVenture capital · United States1Compare · Its co-investors
5Beta.VenturesVenture capital · United States1Compare · Its co-investors
6Blue Note VenturesVenture capital · United States1Compare · Its co-investors
7Breyer CapitalVenture capital · United States1Compare · Its co-investors
8Capital FactoryVenture capital · United States1Compare · Its co-investors
9Capital One VenturesCorporate VC · United States1Compare · Its co-investors
10Cathay InnovationVenture capital · France1Compare · Its co-investors
11Central Capital VenturaCorporate VC · Indonesia1Compare · Its co-investors
12Cleveland AvenueVenture capital · United States1Compare · Its co-investors
13Costanoa VenturesVenture capital · United States1Compare · Its co-investors
14Courtside VenturesVenture capital · United States1Compare · Its co-investors
15Duro VenturesVenture capital1Compare · Its co-investors
16Fluent VenturesVenture capital1Compare · Its co-investors
17Gammite VenturesVenture capital · United States1Compare · Its co-investors
18Geekdom FundVenture capital · United States1Compare · Its co-investors
19GreatPoint VenturesVenture capital · United States1Compare · Its co-investors
20GreycroftVenture capital · United States1Compare · Its co-investors
21Gutbrain VenturesVenture capital · United States1Compare · Its co-investors
22Interlock PartnersVenture capital · United States1Compare · Its co-investors
23Lerer HippeauVenture capital · United States1Compare · Its co-investors
24LocalGlobeVenture capital · United Kingdom1Compare · Its co-investors
25mark vcVenture capital · United States1Compare · Its co-investors
26Norrsken22Venture capital1Compare · Its co-investors
27Oak HC/FTVenture capital · United States1Compare · Its co-investors
28Omega Venture PartnersVenture capital · United States1Compare · Its co-investors
29Prosperity7 VenturesCorporate VC · Saudi Arabia1Compare · Its co-investors
30QBN CapitalVenture capital · Hong Kong1Compare · Its co-investors
31Rosecliff VenturesVenture capital · United States1Compare · Its co-investors
32Savannah FundVenture capital1Compare · Its co-investors
33SC VenturesCorporate VC1Compare · Its co-investors
34Security Leadership CapitalVenture capital1Compare · Its co-investors
35SoftBank Vision FundVenture capital · United Kingdom1Compare · Its co-investors
36ValueStream VenturesVenture capital1Compare · Its co-investors
37WestWave CapitalVenture capital · United States1Compare · Its co-investors
Take this list with you. GET /v1/firms/ptbvc.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 PTB Ventures' 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 PTB Ventures' co-investors as data

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

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