Kalshi, Polymarket open interest falls 20% as World Cup frenzy winds down
The Block·

60-second summary
Kalshi and Polymarket's open interest falls 20% as the World Cup frenzy winds down, with sports accounting for 80% of their total volumes throughout the weeks-long tournament. This significant decline reflects a natural decrease in market participation following the event, impacting the platforms' overall liquidity and potentially influencing their future revenue projections and growth strategies.
Sports accounted for 80% of both Kalshi and Polymarket's total volumes throughout the weekslong World Cup tournament.