Stephen Marcus
Stephen Marcus is Co-Founder and General Partner of Riot Ventures, investing in seed and growth stage companies. He has founded six companies and serves on multiple boards.
What Stephen can write
Riot Ventures writes $1M to $30M+ checks, larger than 83% of firms in the atlas.
Bars: how many firms report each check band. Highlighted: Riot Ventures.Investments named in public bios
Focus
Education
Also at Riot Ventures
Partners like Stephen
At firms with a similar stage, sector and check size.
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One email when Stephen's firm raises a fund, adds a partner or shows new activity.
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Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.
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Who is Stephen Marcus?
Stephen Marcus is Co-Founder and General Partner of Riot Ventures, investing in seed and growth stage companies. He has founded six companies and serves on multiple boards.
How much does Stephen Marcus invest?
Stephen Marcus invests through Riot Ventures, which writes checks of $1M to $30M+ at seed, series a, series b.
How do I pitch Stephen Marcus?
A warm intro from a founder Riot Ventures backed works best. A short LinkedIn note with one line on traction is the next best route.
Last updated 2026-10-15. Is this you? Ask for a correction.