Kalshi and Polymarket July Trading Volume Surges to Record $50.6B

World Cup events drove combined trading volume on Kalshi and Polymarket to a record $50.6 billion in July, despite uneven distribution and ongoing regulatory scrutiny.

Woofun AI data shows that combined trading volume on Kalshi and Polymarket reached a record $50.59 billion in July, driven primarily by World Cup-related activity. While the regulated US platform Kalshi saw sharp gains, Polymarket’s total footprint declined from $14 billion to $12.9 billion during the period. Legal challenges persist for both entities, with over a dozen state regulators accusing them of offering unlicensed gambling contracts under CFTC jurisdiction.