The combined milestone came as Polymarket’s active traders declined from March, while Kalshi continued expanding in the U.S. after its 2024 CFTC court win.
Polymarket and Kalshi’s combined historical trading volume surpassed $150 billion in April. Polymarket’s active traders fell to about 643,000 from more than 733,000 in March, marking a pullback in user activity after prior monthly growth. At the same time, Kalshi continued expanding in the U.S. following its 2024 court win against the CFTC, highlighting diverging momentum across the two prediction market platforms.