Sports contract turnover falls as Kalshi accounts for largest share
Sports contracts traded 426 million dollars across Kalshi, Polymarket US, Polymarket, Novig, DraftKings Predictions, Underdog Exchange and Rothera in the last 24 hours, down 11 percent from the prior period. Kalshi accounted for 236 million dollars of that volume and open interest across Kalshi and Polymarket US stood at 587 million dollars.
Sports prediction markets recorded 426 million dollars in trading over the last 24 hours, an 11 percent decline from the prior period, according to DeFi Rate.
The figures, published Nov 6, 2026 at 11:30 AM ET, cover activity across Kalshi, Polymarket US, Polymarket, Novig, DraftKings Predictions, Underdog Exchange and Rothera.
Kalshi leads reported turnover
Kalshi accounted for 236 million dollars of the total, placing more than half of the reported sports trading volume on that platform.
The summary did not provide individual volume figures for the other six platforms or identify which contributed to the decline.
Open interest has a narrower scope
Open interest across Kalshi and Polymarket US stood at 587 million dollars, according to DeFi Rate. That measure covers only two of the seven platforms included in the trading-volume total.
The summary supplied no prior-period open-interest figure, leaving its direction of change unclear even as reported trading activity fell.
What it means for prediction markets
- The 11 percent decline establishes a slowdown in aggregate turnover for the reported period, but does not show whether activity fell across every platform.
- Kalshi’s 236 million dollars represents more than half of the seven-platform total, making it the largest contributor to reported volume.
- The 587 million dollars in open interest should be read separately from turnover: it measures outstanding positions and covers only Kalshi and Polymarket US.
Sources & attribution
- Published
- Source
- DeFi Ratedefirate.com
- Publisher
- https://defirate.com
- Source URL
- The feed did not publish this story's article address.
Full attribution under the Digital Millennium Copyright Act (DMCA), 17 U.S.C. § 512: this article is an original report by Infiniti Intelligence that summarizes the reporting of the publishers named above, links to their original work, and reproduces no protected expression beyond brief factual reference and in-line attribution (“according to DeFi Rate”). All rights in the underlying reporting remain with the publishers listed; nothing here implies endorsement by or affiliation with them. Rights holders may request correction, update or removal through the contact address published at infiniti.w3ai.io.
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