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#Volume

1 article tagged “Volume”

Prediction Markets Hit $50.6B in July Then Fell 56% in August: What the World Cup Numbers Really ShowSports Projections

Prediction Markets Hit $50.6B in July Then Fell 56% in August: What the World Cup Numbers Really Show

July was a record $50.6B for Kalshi and Polymarket, then volume fell 56% after the World Cup. Why did open interest collapse by 40%, and what held Kalshi up?

Mary Ngaruiya·August 21, 2026
5 min