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Sports trading slows as Kalshi accounts for over half of volume

DeFi Rate's sports board, read this run with event prices observed between 9:46 PM ET on Nov. 4 and 12:53 AM ET on Nov. 5, puts sports trading at $436M across Kalshi,…

Sports prediction markets recorded $436M in trading over 24 hours, down 13%, according to DeFi Rate. Kalshi accounted for $227M of that activity, placing its share above half of the reported total.

Volume and outstanding positions

Reported open interest stood at $627M. The supplied material does not establish whether that figure covers Kalshi alone or the broader sports market, limiting venue-level comparisons.

DeFi Rate’s sports board snapshot used event prices observed between 9:46 PM ET on Nov. 4 and 12:53 AM ET on Nov. 5. The report was published Nov 5, 2026 · 12:54 AM ET.

The figures show a decline in trading activity, but the available summary provides no event-level breakdown or explanation for the slowdown. It also does not identify the full set of venues included in the $436M total.

What it means for prediction markets

  • Kalshi represents a majority of reported volume: Its $227M contribution exceeds half of the $436M total.
  • Lower activity is not a directional signal: The 13% decline alone does not establish how sports outcome probabilities changed.
  • Scope and timing matter: The open-interest coverage is unclear, and the event prices were observed across a window spanning Nov. 4 and Nov. 5 rather than at one instant.
PredictionMarketsKalshiPolymarketDraftKingsInfiniti MarketsInfiniti Signals

Sources & attribution

Published
  1. Source
    Kalshikalshi.com
    Publisher
    https://kalshi.com/markets
    Source URL
    The feed did not publish this story's article address.

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