Notably, Polymarket US’s volume rose 54%...
Kalshi and Polymarket combined $50.59B volume in July, with US platform surge 54% after CFTC regulatory approval in May. World Cup-driven spike to $50B then crash to $1.2B open interest, plus state legal battles, expose fragility of event-dependent model.
Kalshi and Polymarket hit $50.59B combined volume in July (all-time high), with Kalshi up 14% MoM driven by World Cup betting. Prediction markets signal maturing derivatives infrastructure as CFTC legitimacy grows, offsetting state regulatory headwinds.
Notably, Polymarket US's volume rose 54% while the main Polymarket platform's volume fell 26% compared to June.