Kalshi July Notional Volume Hits $41B, Surpassing Polymarket by 3.22x

Prediction market notional volume sets record high in July, with Kalshi leading at $41.05B, significantly outpacing Polymarket's $12.75B and other competitors.

Woofun AI data shows that prediction market notional trading volume achieved a new all-time high in July. Kalshi recorded $41.05 billion in notional volume for the month, securing the top position in the sector. This figure represents approximately 3.22 times the trading volume of Polymarket, which ranked second with $12.75 billion. Rothera placed third with $1.12 billion, followed by Opinion at $880 million and predict.fun at $740 million.