Woofun AI data shows that prediction market trading volume accounted for approximately 27% of total legal sports betting volume in the United States during the World Cup, a significant increase from 9% at the beginning of the year. Although statistical methodologies differ between prediction markets and traditional betting companies, and traditional firms have not disclosed latest internal data, this metric indicates rapid erosion of traditional market share.

Kalshi, a leading prediction market platform, repeatedly broke trading records during the event. Its peak trading volume doubled the record set prior to the World Cup and during the New York Knicks playoffs, reaching nearly ten times the levels seen in early 2024.

Additionally, Kalshi’s mobile app daily active users surpassed those of DraftKings and FanDuel, the two largest online sports betting platforms in the US, highlighting direct competition in user scale.