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

The Block·Jul 20, 2026·2 sources·negative

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Open interest on prediction markets Kalshi and Polymarket dropped 20% as the World Cup excitement faded.

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

Kalshi, Polymarket open interest falls 20% as World Cup frenzy winds down https://t.co/f22C2ivVeD