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Kalshi posts a record 4.39 billion dollars in October volume and out-trades Polymarket for the first time, Startup Fortune reports
- Kalshi posts a record 4.39 billion dollars in October volume and out-trades Polymarket for the first time, Startup Fortune reports — Startup Fortune reports October 2026 is the busiest month prediction markets have recorded, with Kalshi at 4.39 billion dollars in volume on DeFi Rate data, including a record week of 19.03 billion dollars in contract volume from October 5 to 11. Polymarket monthly active traders reached an all-time high of 477,850, up 93.7 percent from September, with monthly volume rebounding to 3.02 billion dollars and 38,270 new markets listed. (Startup Fortune)
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