River Markets
Prime brokerage for prediction markets
About River Markets
River Markets is the prime brokerage for prediction markets. We aggregate every major event-contract venue into one account, giving professional traders best execution, portfolio and order management systems, and a unified API.
Public traction evidence
Each signal links to the public source used for attribution.
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Prediction market trading for funds and pro traders. Book a demo → https:// calendar.app.google/pxy9grqPa7edqN fF7 …
Prediction market trading for funds and pro traders. Book a demo → https:// calendar.app.google/pxy9grqPa7edqN fF7 …
- LinkedIn
Oscar Levy LinkedIn post about River Markets
Launching River Markets out of YC Founder says River Markets is launching out of YC as prime broker infrastructure for prediction markets. Embedded Y Combinator context says the platform has traded more than $50M to date and powers professional traders. Public LinkedIn page...
- LinkedIn
Antonin Parrot LinkedIn post about River Markets
Referral fee for first founding engineer Founder says River Markets is YC P26 and is hiring a founding engineer. Post describes the company as prime brokerage infrastructure for prediction markets. Public LinkedIn page shows 79 reactions and 11 comments.
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Excited to announce the most advanced trading platform for prediction markets. This is only the beginning. Quote Y Combinator @ycombinator · May 26 .@river_markets is building prime brokerage for prediction markets. One terminal and API to trade every venue, with cross-exchange routing and the order types professional desks actually need. Institutional infrastructure for the fastest-growing asset class. Schedule a demo at
Excited to announce the most advanced trading platform for prediction markets. This is only the beginning. Quote Y Combinator @ycombinator · May 26 .@river_markets is building prime brokerage for prediction markets. One terminal and API to trade every venue, with cross-exchange...
- LinkedIn
We are super excited to announce we fully onboarded Polymarket US!
We are super excited to announce we fully onboarded Polymarket US! You can now seamlessly trade across all major exchanges on River Markets. Book a demo here: https://lnkd.in/geb5cJDG
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Join us Wednesday in San Francisco Quote Dan Rubin @drub12 · May 18 Hosting a prediction markets get-together at the @Cleat_Street SF offices along with our friends @river_markets. If you're building, trading or investing in prediction markets and interested in joining - shoot me a message. Event link below: https:// luma.com/ihsjxpqv
Join us Wednesday in San Francisco Quote Dan Rubin @drub12 · May 18 Hosting a prediction markets get-together at the @Cleat_Street SF offices along with our friends @river_markets. If you're building, trading or investing in prediction markets and interested in joining - shoot...
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Up and to the right Quote oscar @oscar_lvy · Jun 4 Had to read it twice.. @river_markets mentioned in @matt_levine's Money Stuff Article below : https:// bloomberg.com/opinion/newsle tters/2026-06-04/get-your-spacex-bets-in-now?cmpid=[redacted-public-param]&utm_medium=email&utm_source=newsletter&utm_term=260604&utm_campaign=moneystuff …
Up and to the right Quote oscar @oscar_lvy · Jun 4 Had to read it twice.. @river_markets mentioned in @matt_levine's Money Stuff Article below : https:// bloomberg.com/opinion/newsle...
- YouTube
River Markets - Launch Video
Embedded in the official River Markets YC company page.