Kalshi and Polymarket hit $44.8 billion in June trading volume, a 75% monthly jump driven by 2026 FIFA World Cup prediction market activity.

Among the three, Kalshi saw the largest month-over-month increase in volume, growing 87.4% to $31.5 billion from $16.81 billion.

Trading volumes on Kalshi and Polymarket both hit record highs in June. Rothera, a new prediction market platform, was also able to manage $2 billion in volume.