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

AI Summary Sports accounted for 80% of both Kalshi and Polymarket's total volumes throughout the weekslong World Cup tournament. fulltext: 117 chars | fulltext source: rss-fallback | summary method: extractive Original: https://www.theblock.co/post/408965/kalshi-polymarket-open-interest-falls-20-as-world-cup-frenzy-winds-down?utm_source=rss&utm_medium=rss Source: The Block