River Markets
YC X26San Francisco, US · Founded 2026 · 2 employees · Hiring · 2 known investors
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
River Financial4 shared keywordsRiver is a bitcoin bank providing full-reserve custody and financial services built on sound money principles. The company publishes proof of reserves and public financials to demonstrate the security and soundness of its operations.
CryptoRank3 shared keywordsCryptoRank provides cryptocurrency market data, analytics, and research, including live prices and market capitalization rankings for thousands of coins, along with fundraising trends and token sale tracking. It publishes insights and reports covering exchanges, funding rounds, and market narratives for crypto investors and researchers.
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.