Stephen Marcus

Steve is Co-Founder and General Partner of Riot Ventures, investing across seed and growth stage companies. He is an American industrialist focused on restoring American industrial sectors using advanced technologies. Steve is a six-time entrepreneur with over 20 years building large scale wireless networks and datacenters. He has also invested in dozens of tech companies including a half dozen unicorns that collectively have over $150B of market capitalization, including three IPOs. Steve led Riot's investments in Shield AI (aircraft and AI pilots), Blue Water Autonomy (large autonomous ships), Toast (restaurant OS), Desktop Metal (industrial additive manufacturing), Kindo (AI Cybersecurity), Mango (microbial quality control), and Valar Atomics (mass manufactured nuclear reactors).

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Steve received a BS from Worcester Polytechnic Institute and an MBA from the MIT Sloan School of Management. In his spare time, Steve plays competitive tennis and high stakes poker, and loves meeting the locals and exploring strange new places. He is also an Airline Transport Pilot (ATP) rated fixed wing and helicopter pilot with three type ratings and five flight instructor ratings.