Kalshi and Polymarket's June Trading Volume Reaches $44.8 Billion

The combined trading volume of Kalshi, Polymarket, and Polymarket US surged by 75% from May to reach $44.8 billion, according to The Block, citing its own dashboard.

Kalshi's volume increased by 87.4% to $31.5 billion, Polymarket's rose by 45% to $10.26 billion, and Polymarket US reached $3.04 billion. This growth is attributed to the 2026 FIFA World Cup, which kicked off on June 11.