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San Francisco leads Kalshi sports trading in October 31 snapshot

San Francisco was the most traded sports contract on the Kalshi leaderboard in the October 31 snapshot, with 8.4 million contracts in open interest. Chicago was next at eight cents with 137,000 contracts traded.

San Francisco topped Kalshi’s sports leaderboard by trading activity in the October 31 snapshot, according to PredictionMarketPicks. Its contract to win the 2027 Pro Football Championship was priced at 15 cents.

Trading activity and outstanding contracts

The San Francisco contract recorded 139,000 contracts traded over 24 hours, with open interest of 8.4 million contracts, according to PredictionMarketPicks.

Chicago followed with 137,000 contracts traded and a price of eight cents. Its trading volume was close to San Francisco’s, despite the lower contract price.

A snapshot of market positioning

The figures appeared in an update published Oct 31, 2026, at 11:45 PM ET. They describe the leaderboard at that snapshot, rather than a price or volume trend over time.

San Francisco’s position was a lead in sports trading activity. The supplied summary does not establish that it was the highest-priced championship contender or provide comparable open-interest data for Chicago.

What it means for prediction markets

  • Price and activity are distinct: San Francisco traded at 15 cents and Chicago at eight cents, while their reported trading volumes were closely matched.
  • Open interest adds context: San Francisco’s 8.4 million outstanding contracts were reported separately from its 139,000 contracts traded over 24 hours.
  • Trend claims remain limited: Without earlier snapshots, these figures alone do not show whether either contract’s price or trading activity was rising or falling.
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Sources & attribution

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    PredictionMarketPicks
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