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Investors / United States / PTB Ventures

PTB Ventures

Venture capital · New York, NY, United States · North America

ptbvc.comTakes pitches from founders

PTB Ventures is a thesis-driven venture capital firm that invests in early-stage companies in the digital identity ecosystem. It targets companies applying technologies such as connected devices, artificial intelligence, and blockchain to identity-related social and economic problems.

Invests inFintechCybersecurityAI & Machine Learning

In its own wordsdigital identityartificial intelligenceblockchainsecurityfintechimpact

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4portfolio companies
0funding rounds on record
Seed to Series Astages it states

PTB Ventures lists 4 checked portfolio companies on its own site. Its largest themes are Fintech (38%), Cybersecurity (25%) and AI & Machine Learning (25%). 100% of its companies are based in United States. It invests most often alongside ATX Venture Partners, Accel and Allegis Capital.

No funding round on record names PTB Ventures yet, so the figures come from its portfolio page.

Invests most often with

firms sharing its portfolio companies
ATX Venture Partners 1Accel 1Allegis Capital 1Alpha Partners 1Beta.Ventures 1Blue Note Ventures 1Breyer Capital 1Capital Factory 1
Show as a table
Co-investors
Share
ATX Venture Partners1
Accel1
Allegis Capital1
Alpha Partners1
Beta.Ventures1
Blue Note Ventures1
Breyer Capital1
Capital Factory1

All co-investors

Its portfolio companies

where they are based, and what their own sites show

Headquarters

Site status

  • Site answers4100%
  • No longer answers00%
  • Points to another company00%
  • Parked or sold domain00%

A site that stops answering three checks in a row is counted as no longer answering; that is not proof of closure. A site that points to another company is often an acquisition.

Investment themes

share of its checked companies
Fintech 38%Cybersecurity 25%AI & Machine Learning 25%Legal & Compliance 13%

This firmAll checked companies

Show as a table
Investment themes
This firmAll checked companies
Fintech38%12%
Cybersecurity25%4%
AI & Machine Learning25%18%
Legal & Compliance13%2%

Co-investor network

who it backs companies with, and who 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 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 Avenue1
Shared portfolio companies with PTB VenturesFirms that also back companies together

All co-investors or Compare portfolios with ATX Venture Partners

Compare PTB Ventures head to head

portfolio size, rounds, entry stages, themes and the companies both back
vs ATX Venture Partners1 shared companyvs Accel1 shared companyvs Allegis Capital1 shared companyvs Alpha Partners1 shared companyvs Beta.Ventures1 shared companyvs Blue Note Ventures1 shared company

Three or more firms at once: portfolio overlap.

Portfolio

4 companies checked against their own sites
CompanyWhat it doesThemesFirst round with itEvidence
Callsigncallsign.comCallsign provides fraud prevention, authentication, and intelligence solutions to businesses.
CybersecurityFintech
Portfolio page
Element_logo_black_solo.jpgdiscoverelement.com · United StatesElement delivers digital identity solutions, including KYC and digital onboarding, credit risk products, and authentication services
FintechAI & Machine Learning
Portfolio page
StealthLogo_Long.pngsmileidentity.com · United StatesSmile ID provides AI-powered identity verification services
AI & Machine LearningCybersecurity
Portfolio page
ZenBusinesszenbusiness.com · United StatesZenBusiness helps individuals form and manage limited liability companies (LLCs) and other businesses.
Legal & ComplianceFintech
Portfolio page

About this data

site last read 8 Nov 2026
The homepage of PTB Ventures, as last read
ptbvc.com as VCinfo last read it
Site
ptbvc.com
Last read
8 Nov 2026
Watching since
5 Nov 2026
Companies checked
4

Rates come from what VCinfo has observed since observation_start. Firms tend to remove companies that closed, so early rates understate reality. A company leaving a portfolio page does not mean it closed or exited. An unreachable site means our checks failed, nothing more.

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VCinfo API
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# also
GET /v1/firms/ptbvc.com/portfolio
GET /v1/firms/ptbvc.com/coinvestors
GET /v1/firms/ptbvc.com/news
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