The trading volume of U.S.-based prediction platform Kalshi has surpassed Polymarket.

On the 19th, The Block reported that Kalshi’s September trading volume was $1.3 billion, far exceeding competitor Polymarket ($773 million). It is the first time Kalshi’s monthly trading volume has surpassed $1 billion since the U.S. election in November last year.

The outlet said, “Kalshi’s performance in recent months shows that the platform’s popularity is increasing.”

The data show that Kalshi now accounts for roughly 62% of global prediction market volume, Polymarket for 37%, and the rest split between Limitless and Myriad, the prediction market owned by Decrypt parent company Dastan. Trading volume on Kalshi skyrocketed in August, not coincidentally at the start of the NFL season and as the prediction market pushes further into sports.