Stephen Marcus
UnclaimedCurrent Firm
Riot Ventures
Investments
1+ companies
Focus
Deeptech, AI
About Stephen Marcus
Stephen Marcus is a Co-Founder and General Partner of Riot Ventures, a deeptech firm devoted to a select group of companies with checks up to $200 million. A six-time company founder and chief executive, he spent more than twenty years building large-scale wireless infrastructure and datacenters before turning to investing. He sits on the boards of Shield AI in aerospace and defense, Valar Atomics in nuclear power, Endurosat in satellite constellations, Blue Water Autonomy in autonomous surface ships, Sovera, Resurgent Industries and Nodal Networks. Riot reports that he has invested in a half dozen unicorns and decacorns with a combined market capitalization of more than $200 billion, among them the public companies Okta, Toast and Desktop Metal. He holds a B.S. from Worcester Polytechnic Institute and an MBA from the MIT Sloan School of Management.
Focus Areas
Investment Stage
Notable Investments
Other Investors at Riot Ventures
Investment Profile
Stephen Marcus is a Co-Founder and General Partner, Riot Ventures at Riot Ventures, based in Los Angeles, CA.
Stephen's investment focus spans Deeptech, AI, Robotics, Aerospace & Defense, Space, primarily investing at the Pre-Seed, Seed, Series A, Series B+ stages. This specialization allows for deep domain knowledge and strong network effects that benefit portfolio companies.
Notable investments in Stephen's portfolio include Toast. These companies reflect a pattern of backing high-potential startups across their focus sectors.
Frequently Asked Questions
Who is Stephen Marcus?
Stephen Marcus is a Co-Founder and General Partner, Riot Ventures at Riot Ventures, based in Los Angeles, CA. Their investment focus includes Deeptech, AI, Robotics.
What does Stephen Marcus invest in?
Stephen Marcus focuses on investments in Deeptech, AI, Robotics, Aerospace & Defense, Space through Riot Ventures. These focus areas reflect their domain expertise and the types of startups they actively seek to back.
What are Stephen Marcus's most notable investments?
Stephen Marcus's notable portfolio investments include Toast. These companies span multiple sectors and stages, reflecting a track record of identifying high-potential startups.
What firm is Stephen Marcus at?
Stephen Marcus is currently at Riot Ventures, headquartered in Los Angeles, CA, serving as Co-Founder and General Partner, Riot Ventures.
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