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Paul Graham

Angel Investor

Co-founder of Y Combinator, prolific essayist, and angel investor with investments in Stripe, Replit, and other high-profile startups.

London, United Kingdom · 25+ investments · 25 portfolio companies

Pre-Seed
Seed
Early Stage
Artificial Intelligence
Fintech
Marketplace
SaaS
Developer Tools
Headquarters
London, United Kingdom
Website
paulgraham.com
Portfolio Companies
25
Total Investments
25
Last Investment
Aug 2026
Geographic Focus
United States, Global

Investment Thesis

Backs technical founders building ambitious technology companies that solve problems the founders personally experience. Believes the best startup ideas come from founders who are themselves the target users. Prioritizes founder quality and novel ideas over market size or conventional wisdom.

Paul Graham is an Angel Investor based in London, United Kingdom. It has made 25 investments in Artificial Intelligence and Fintech, including Maritime Fusion, Boom Supersonic and Sim.

Portfolio25

Co-investors24

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24 co-investors across 69 shared portfolio companies — who they back alongside, and how often they lead.

Venture Capital ×18 · Individual ×2 · Corporate VC ×2 · 46 shared rounds

Investment History

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