River Markets
YC X26San Francisco, US · Founded 2026 · 2 employees · Hiring · 2 known investors
Find your way into River Markets
674 people in our graph share verified history with the River Markets team — schools, employers, funds. One of them is your warm intro.
Neil Rimerunlockedknows Oscar Levy · together at Nexthink (overlapped)
×3knows the team · via BlackRock
knows the team · via Valkyrie Trading
×5knows the team · via Morgan Stanley
knows the team · via University of California, Berkeley
knows the team · via École nationale des ponts et chaussées
River Markets provides a unified trading terminal and API for prediction market desks, aggregating order books and execution across multiple prediction exchanges like Kalshi and Polymarket.
Also known as Centos Group
Founders & leadership· Y Combinator alumni (X26)
River Markets was founded in 2026 by Oscar Levy and Antonin Parrot.
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Oscar LevyinCo-FounderOscar Levy is a co-founder at River Markets with prior quantitative research roles at BlackRock and Sandbar Asset Management. He holds a Master's degree in Financial Engineering from UC Berkeley.
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Antonin Parrotin𝕏Co-FounderAntonin Parrot is co-founder of River Markets and has a background in engineering and computer science, with prior experience as a quantitative trader at a high-frequency options market-making firm.
Investors · 2
Competitors · 3
by search overlap
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MetaMask3 shared keywordsMetaMask is a self-custody crypto wallet that lets users trade, swap, and use tokens, including features like leveraged trading, tokenized stocks and ETFs, spending crypto for purchases via a card, and earning yield. It also provides developer tools for integrating with MetaMask and building on-chain (walletless) decentralized apps.
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Frequently asked questions
- What does River Markets do?
- River Markets provides a unified trading terminal and API for prediction market desks, aggregating order books and execution across multiple prediction exchanges like Kalshi and Polymarket.
- Who founded River Markets?
- River Markets was founded by Oscar Levy, Antonin Parrot in 2026.
- Who are River Markets's investors?
- River Markets's investors include Haun Ventures, Y Combinator.
- Where is River Markets headquartered?
- River Markets is headquartered in San Francisco, US.