Combined Kalshi and Polymarket trading volume fell 14.5% to $45.33B in August after July's record $50.59B, driven by the FIFA World Cup's

Combined Kalshi and Polymarket trading volume fell 14.5% to $45.33B in August after July's record $50.59B, driven by the FIFA World Cup's

Kalshi recorded $37.17 billion in volume in August, while Polymarket and its US platform saw a combined $8.16 billion.