River Markets(@river_markets):Today, River Markets announced an $8.5M seed round led by @HaunVentures We’re building the prime broker for prediction markets, giving professional trading firms unified execution and risk across venues. Thanks to @FortuneMagazine and @c

River Markets

@river_markets

The prime broker for prediction markets

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River Markets@river_markets

2026.08.11 17:45

Today, River Markets announced an $8.5M seed round led by @HaunVentures We’re building the prime broker for prediction markets, giving professional trading firms unified execution and risk across venues. Thanks to @FortuneMagazine and @c_grigera for covering what we're building