Bloomberg: After World Cup Fever Fades, Polymarket Trading Volume Plummets 56%, Decline Exceeds Kalshi

TechFlow news, August 12, according to Bloomberg, during the World Cup, bets on scores, celebrity appearances, and player-related topics drove a surge in prediction market trading volume, with order volumes for both Polymarket and Kalshi rising significantly. However, market activity cooled rapidly after the tournament ended.

According to data compiled by Dune Analytics users, as of the end of July, Polymarket's combined weekly trading volume for international and U.S. markets fell 56% from the June peak, while Kalshi's decline over the same period was 25%. The report suggests that in the absence of support from major sporting or political events, Polymarket's decline was more pronounced, also reflecting that prediction market interest faces a sustainability challenge once event-driven momentum subsides.