River Finance LLC, an affiliate of prediction-market infrastructure startup River Markets, has registered with the U.S. Commodity Futures Trading Commission as a futures commission merchant and joined the National Futures Association. The status enables the entity to hold customer accounts and manage customer funds within regulated frameworks. River Markets is developing a prime brokerage platform for institutional traders, allowing them to consolidate fund management, position tracking and risk oversight across multiple exchanges and clearinghouses through a single account. The company also plans to support financing arrangements and compliant over-the-counter trading. Co-founder and CEO Oscar Levy has said access to event contracts alone is insufficient for institutions that need to deploy capital efficiently around the clock and manage risk across venues. Founded in May 2026, River Markets serves hedge funds, sports funds, proprietary trading firms and event-risk hedging companies. It has routed more than 250 million contracts and completed an $8.5 million seed funding round with backing from leading venture-capital firms.