Polymarket weekly volume drops 56% from peak, while Kalshi falls 25%

Weekly trading volume on prediction market platforms Polymarket and Kalshi has declined as demand eased amid a lack of major events, Bloomberg reported on Aug. 12. According to data compiled by Dune Analytics, Polymarket’s weekly trading volume, combining its global and U.S.-only platforms, was down 56% at the end of last month from the record high it reached in June. Bloomberg said fewer major sports matchups and political issues have reduced trading demand. Rival Kalshi showed a smaller decline after the World Cup ended, with weekly volume down 25% over the same period.