Coen Armstrong

Investor, Growth Team at Spark Capital

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About

Coen Armstrong is an investor on Spark Capital's growth team who studied mathematics and history at Stanford. Before joining Spark in 2024, he worked at biotech and insurance startups, spent a summer at hedge fund Bridgewater, and served as an investor at 8VC. He focuses on identifying overlooked market opportunities and views himself as a generalist driven by curiosity in evaluating founders and their companies.

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Coen Armstrong @coen_armstrong

Reiner, Mike & the extraordinary MatX team have made prescient technical bets in deeply co-optimising chips with large models, and can significantly push the frontier on the cost & quality of intelligence. It’s a privilege to work with them; I’m very excited for what’s next. https://t.co/S1xHvO2kiv

Feb 24, 2026 · ♥ 25 · ⇄ 1