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Prediction market average daily trading volume hits a record 4.13 billion dollars in October, up 55 percent, with sports accounting for 3 billion dollars, CardPlayer reports

  • Prediction market average daily trading volume hits a record 4.13 billion dollars in October, up 55 percent, with sports accounting for 3 billion dollars, CardPlayer reports — Jefferies analyst Dan Fannon put October open interest at a record 3.27 billion dollars, up 45 percent from September, with sports contracts at 83 percent of open interest. Polymarket average daily volume rose 50 percent to 655 million dollars, up 395 percent from October 2025. (CardPlayer)

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