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Kalshi leads tracked prediction market volume at 75.6 percent with 2.5 billion dollars open interest

  • Kalshi leads tracked prediction market volume at 75.6 percent with 2.5 billion dollars open interest — A Datawallet comparison for the 30 days to October 7, 2026 puts Kalshi at 75.6 percent of tracked volume, with 2.5 billion dollars in open interest, compared with 339 million dollars on Polymarket international. The comparison lists Kalshi as CFTC-regulated in US dollars and Polymarket US as a separate CFTC-regulated exchange. (Datawallet)

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