YC Spring 2026 (P26) founder

Oscar Levy

Founder of River Markets, Prime brokerage for prediction markets

River Marketsfintech1 public signals

Company

Oscar Levy is listed as a founder of 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.

Founder traction evidence

Public posts and activity attributed directly to this founder.

  1. 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...