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Kalshi leads prediction trading as daily volume reaches $5.39 billion

Volume Race compiles daily reports from the exchanges themselves and puts Kalshi at 75.1 percent of 30-day volume, ahead of Polymarket US at 11.4 percent and Polymarket at 4.2 percent. The largest single market on November 3 was the Texas Senate winner market on Kalshi at 108 million dollars.

Prediction markets recorded $5.39 billion in trading across 10 exchanges on November 3, according to Volume Race. The aggregate for the last 30 days reached $130.86 billion.

Kalshi accounts for most monthly activity

Volume Race, which compiles daily reports supplied by the exchanges themselves, put Kalshi’s share of 30-day volume at 75.1 percent. Polymarket US followed at 11.4 percent, while Polymarket accounted for 4.2 percent.

Those figures place Kalshi well ahead of the other two named venues over the 30-day period. Volume Race lists Polymarket US and Polymarket separately; their reported shares should therefore be read as distinct entries.

Texas Senate contract tops the daily ranking

The largest individual market on November 3 was Kalshi’s Texas Senate winner market, which generated $108 million in trading, according to Volume Race.

The figures were published on November 4, 2026, at 2:45 PM ET. They describe trading activity rather than contract prices or implied probabilities, so they do not establish which Texas Senate outcome traders considered most likely.

What it means for prediction markets

  • Venue concentration: Kalshi’s 75.1 percent share makes it the dominant venue by reported volume over the last 30 days.
  • Contract-level attention: The $108 million Texas Senate winner market led individual markets on November 3, identifying a major focus of that day’s trading.
  • Limits of the data: Exchange-supplied volume measures activity, not the direction of traders’ expectations. The provided figures contain no outcome probabilities.
KalshiPolymarketSenateInfiniti MarketsInfiniti Signals

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    Volume Race
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