TheBlock
River Finance LLC, an affiliate of River Markets, has registered with the Commodity Futures Trading Commission as a futures commission merchant and joined the National Futures Association. The registration allows it to carry customer accounts and handle client funds while the company develops a prime brokerage platform for prediction markets. River Markets has routed more than 250 million contracts and raised $8.5 million in seed funding.
Why it matters
The planned platform would give institutional traders a single account for managing capital, positions and risk across multiple exchanges and clearinghouses. River Markets also plans to support financing arrangements and permitted over-the-counter trading, reflecting institutions' demand for capital efficiency and round-the-clock risk management.
Prediction markets are becoming large enough to support traditional derivatives infrastructure. Combined trading volume across Kalshi, Polymarket US and Polymarket's international platform exceeded $500 billion in October. River Markets serves hedge funds, sports funds, proprietary trading firms and event-risk hedging companies.
Market impact
River Finance is joining a wider push to bring event contracts under a regulated US framework. Polymarket-affiliated entities sought FCM and swap-firm registration through the NFA in July, while Kalshi affiliate Kinetic Markets received NFA approval in March. Blockchain.com applied for a designated contract market license and FCM registration last month.
The latest filing from Hyperliquid Strategies to become an FCM also targets US access to HIP-3 perpetual futures markets. Together, these moves point to competition over custody, financing, clearing and risk infrastructure as prediction markets move deeper into institutional territory.
Frequently asked questions
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What does River Finance's FCM registration enable?
It allows River Finance to carry customer accounts and handle client funds while supporting River Markets' planned institutional prime brokerage platform for prediction markets.
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Which institutions is River Markets targeting with its brokerage platform?
River Markets serves hedge funds, sports funds, proprietary trading firms and event-risk hedging companies.
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How large has prediction-market trading activity become?
River Markets has routed more than 250 million contracts, while combined trading volume across Kalshi, Polymarket US and Polymarket's international platform exceeded $500 billion in October.
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What would River Markets' prime brokerage platform provide?
It would let institutional traders manage capital, positions and risk across multiple exchanges and clearinghouses through a single account, with financing and permitted OTC trading planned.
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Which other firms are pursuing US prediction-market infrastructure?
Polymarket affiliates sought FCM and swap-firm registration, Kalshi affiliate Kinetic Markets received NFA approval, Blockchain.com applied for a DCM license and FCM status, and Hyperliquid Strategies filed to become an FCM.
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