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Investors / United States / 408 Ventures

408 Ventures

Venture capital · Palo Alto, CA, United States · North America

408ventures.com

408 Ventures makes early stage venture investments and provides mentoring, connections, and company-building support to founders. It focuses on companies building data platforms, analytics, and tools with network effects and actionable intelligence.

Invests inAI & Machine LearningCybersecurityEnterprise Software

In its own wordsdata platformsanalyticsnetwork effectshealthfinancecommerce

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15portfolio companies
0funding rounds on record
Seed to Series Astages it states

408 Ventures lists 15 checked portfolio companies on its own site. Its largest themes are AI & Machine Learning (29%), Cybersecurity (17%) and Enterprise Software (17%). 100% of its companies are based in United States. It invests most often alongside Y Combinator, Digital Future and Dnipro.

No funding round on record names 408 Ventures yet, so the figures come from its portfolio page.

Round figures show recent activity, not 408 Ventures' whole history. Rounds on record name 0 companies; its own site lists 15. Funding rounds are complete from mid-2025, so counts and the yearly trend undercount a firm that invested before then. The portfolio, themes and places come from its own site and are not affected.

Investment themes

share of its checked companies

This firmAll checked companies

Show as a table
Investment themes
This firmAll checked companies
AI & Machine Learning29%18%
Cybersecurity17%4%
Enterprise Software17%8%
Media & Entertainment8%4%
Space & Defense8%3%
Robotics & Hardware4%1%
Real Estate & Construction4%3%
Human Resources4%1%

Invests most often with

firms sharing its portfolio companies
Show as a table
Co-investors
Share
Y Combinator5
Digital Future4
Dnipro4
AVentures Capital2
Akkadian Ventures2
Locus Ventures2
Techstars2
137 Ventures1

All co-investors

Investor profile

percentile among all firms
Portfolio size: 14 companiesRecent activity: 0 rounds in 12 monthsEarly stage: 0% of entries at pre-seed or seedEvidence: 0% of companies confirmed by a roundSector focus: 29% in its largest sectorReach: 1 countryPortfolio size36th pctRecent activity46th pctEarly stage54th pctEvidence52th pctSector focus49th pctReach19th pct
This firmMedian of all firms
Show as a table
408 Ventures compared with all firms
MeasurePercentile of all firmsValue
Portfolio size36th14 companies
Recent activity46th0 rounds in 12 months
Early stage54th0% of entries at pre-seed or seed
Evidence52th0% of companies confirmed by a round
Sector focus49th29% in its largest sector
Reach19th1 country

Its portfolio companies

where they are based, and what their own sites show

Headquarters

Site status

  • Site answers1387%
  • No longer answers00%
  • Points to another company213%
  • 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.

Co-investor network

who it backs companies with, and who they back together
15 shared companies12 shared companies11 shared companies11 shared companies7 shared companies7 shared companies7 shared companies4 shared companies4 shared companies3 shared companies3 shared companies3 shared companies3 shared companies3 shared companies3 shared companies3 shared companies2 shared companies2 shared companies2 shared companies2 shared companies2 shared companies2 shared companies2 shared companies2 shared companiesY Combinator: 5 shared companiesY Combinator5Digital Future: 4 shared companiesDigital Future4Dnipro: 4 shared companiesDnipro4AVentures Capital: 2 shared companiesAVentures Capital2Akkadian Ventures: 2 shared companiesAkkadian Ventures2Locus Ventures: 2 shared companiesLocus Ventures2Techstars: 2 shared companiesTechstars2137 Ventures: 1 shared companies137 Ventures1A-Star Partners: 1 shared companiesA-Star Partners1Adventure Fund: 1 shared companiesAdventure Fund1Aglaé Ventures: 1 shared companiesAglaé Ventures1Alfabeat: 1 shared companiesAlfabeat1
Shared portfolio companies with 408 VenturesFirms that also back companies together

All co-investors or Compare portfolios with Y Combinator

Compare 408 Ventures head to head

portfolio size, rounds, entry stages, themes and the companies both back

Three or more firms at once: portfolio overlap.

Portfolio

15 companies checked against their own sites
CompanyWhat it doesThemesFirst round with itEvidence
Appvance AI-Driven Test Automationappvance.comAppvance provides AI-driven test automation solutions for software quality assurance
AI & Machine LearningEnterprise Software
Portfolio page
AttackIQattackiq.comAttackIQ provides a platform for cybersecurity testing and validation
CybersecurityAI & Machine Learning
Portfolio page
Cymmetriacymmetria.com
Portfolio page
Mixerbox Universal music playermixerbox.com · United StatesMixerBox develops and offers various mobile and web applications for music, video, news, and other services.
Enterprise SoftwareMedia & Entertainment
Portfolio page
People.aipeople.ai
AI & Machine LearningEnterprise Software
Portfolio page
Petcubepetcube.comThe company produces and sells pet cameras and other pet care devices.
ConsumerHealthcare & Biotech
Portfolio page
PROMO REPUBLICpromorepublic.com · United StatesThe company provides a local marketing platform with AI tools for social media posts, listings, reviews, and analytics
AI & Machine LearningMedia & Entertainment
Portfolio page
Rallyware Engaging independent workforcesrallyware.comRallyware provides a platform that helps companies manage and improve the performance of their sales teams using AI and machine learning
Enterprise SoftwareAI & Machine Learning
Portfolio page
Reply Enabling 1:1 Conversations at Scalereply.ioThe company provides an AI sales outreach and cold email platform for businesses.
AI & Machine LearningSpace & Defense
Portfolio page
Stealth Security Real-time, Automated Protection that Continuously Adapts to New Attacksstealthsec.comThe company provides protection for applications, APIs, and AI systems from various attacks and security threats.
CybersecurityAI & Machine Learning
Portfolio page
Stealth Workerstealthworker.comStealth Worker specializes in providing cybersecurity experts as contractors for projects or long-term roles.
CybersecurityHuman Resources
Portfolio page
Transbox Remote data management solution.transbox.xyz
CybersecuritySpace & Defense
Portfolio page
Uberuber.com · United StatesThe company provides transportation and delivery services.
Robotics & HardwareReal Estate & Construction
Portfolio page
VGSverygoodsecurity.com · United StatesVGS provides payment tokenization services and infrastructure for agentic commerce transactions
Fintech
Portfolio page
WayWearable “WAYSKIN Home” brings clinic-quality care, matched to your life and your skin.wayskin.com
Portfolio page

About this data

site last read 5 Nov 2026
Site
408ventures.com
Last read
5 Nov 2026
Watching since
5 Nov 2026
Companies checked
15

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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