Estimated Prediction-Market Fees Top $1.5 Billion in Q3
The sector’s estimated fees were 19 times the year-earlier total, with Kalshi and Polymarket accounting for most of the amount. Kalshi also partnered with the Philadelphia 76ers, the first NBA team to do so.

Estimated prediction-market fees exceeded $1.5 billion in the third quarter, about 19 times the year-earlier estimate. Kalshi and Polymarket accounted for most of the fees.
The Philadelphia 76ers became the first NBA team to partner with Kalshi on Oct. 30. The partnership came days after the league designated Kalshi and Polymarket as its preferred prediction markets.
Kalshi’s $1 billion Series G financing valued the company at $40 billion. Kalshi plans to develop index products, perpetuals tied to individual stocks and compute markets, grow its institutional business and expand into Latin America and Europe.