Prediction Markets Log $188 Billion in Q3 Trading Volume

Prediction markets recorded $188 billion in trading volume in the third quarter of 2026, nearly 70% more than in the prior quarter and about 21 times the level a year earlier.

Kalshi drove much of the increase, with sports markets accounting for about 40% of its Q3 volume. The figures point to a sharp expansion in trading activity across the sector.

Growth varied by category. Kalshi expanded its share in several areas, while Polymarket retained a strong position in political markets.