/People

James Detweiler

Investor

General Partner at Felicis Ventures

San Francisco, California

Writes $500K – $15M checks · typically $7.8M

30 Under 30 2026 · Venture Capital

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About

Member of the Felicis investment team, co-author of investment articles.

Contact· self-published, not guessed

Investments

Per curated public sources.

Colleagues at Felicis Ventures

Network5

Investors connected to James in public investor directories — a warm-intro map.

Frequently asked questions

Who is James Detweiler?
Member of the Felicis investment team, co-author of investment articles.
Where does James Detweiler work?
James Detweiler is General Partner at Felicis Ventures.
What check size does James Detweiler write?
James Detweiler typically writes checks of $500K – $15M.
What companies has James Detweiler invested in?
Investments tracked here include Cambridge Terahertz, DeepJudge, Extra, Mercor, Operand, Ricursive Intelligence, Shield AI, Singularity, Skild AI.

About this profile. Compiled from public sources — Felicis Ventures's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights