James Detweiler

James Detweiler is a General Partner at Felicis, the venture firm behind investments in Shopify, Fitbit, and Twitch. Promoted to General Partner in February 2026, he has sourced, led, or co-led 25+ investments across AI, robotics, vertical software, and defense - including Skild AI (now valued at $14B), RunwayML, and Mercor. A summa cum laude Dartmouth grad in Physics and Mathematical Finance, he honed his AI investment lens at Zetta (the first AI-focused venture fund) and SVB Capital before joining Felicis. He founded the Felicis Fellows program to bridge top AI researchers and entrepreneurship, and coined the investment thesis 'The Great Splintering' - the idea that as thinking becomes cheap, value shifts to trust, judgment, and presence. He grew up in Santa Clara as the youngest of five children of an actress and a painter.