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Kalshi leads trading as prediction markets reach $135.35 billion in monthly volume

Volume Race compiles the total from the daily reports of 10 exchanges. Polymarket US handled 15.2 billion dollars over the 30 days for an 11.3 percent share, with Polymarket's international platform at 5.55 billion dollars.

Prediction markets recorded $135.35 billion in trading over the last 30 days, according to Volume Race. Kalshi accounted for 75.2 percent of that total.

Trading concentrated at Kalshi

Volume Race compiled the aggregate from daily reports issued by 10 exchanges. Its figures place Kalshi well ahead of the other platforms identified in the summary.

Polymarket US recorded $15.2 billion in volume during the same 30-day period, representing an 11.3 percent share, according to Volume Race.

Polymarket’s international platform separately registered $5.55 billion. The figures distinguish its activity from that of Polymarket US rather than presenting them as a single platform total.

What it means for prediction markets

  • Kalshi’s 75.2 percent share shows that trading volume across the 10-exchange dataset was heavily concentrated on one venue.
  • The separate figures for Polymarket US and its international platform matter when comparing individual venues’ shares.
  • These totals measure trading activity over 30 days; the supplied summary does not establish how volume changed from an earlier period or how it was distributed across individual markets.
KalshiPolymarketInfiniti MarketsInfiniti Signals

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    Volume Race
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