Kalshi leads sports open interest as tracked markets total 455,593
DeFi Rate puts open interest in sports markets at 633 million dollars, with 567 million dollars on Kalshi and 65 million dollars on Polymarket US. The tracker lists 455,593 sports markets across venues, led by Polymarket with 193,835 and Kalshi with 108,884.
Sports prediction markets hold 633 million dollars in open interest, according to DeFi Rate figures summarized on Nov 7, 2026, at 8:45 AM ET.
Open interest concentrated on Kalshi
DeFi Rate puts Kalshi’s sports open interest at 567 million dollars, compared with 65 million dollars on Polymarket US. Those figures place Kalshi well ahead of Polymarket US on this measure.
The two venue figures add up to 632 million dollars, rather than the stated total of 633 million dollars. The supplied summary does not explain that difference.
Market counts show a different leader
Across venues, DeFi Rate’s tracker lists 455,593 sports markets. Polymarket leads the reported market counts with 193,835, followed by Kalshi with 108,884.
The summary labels the market-count leader as Polymarket, while identifying Polymarket US in the open-interest breakdown. It does not establish whether those figures cover the same scope, limiting direct comparisons between market counts and open interest.
What it means for prediction markets
- Kalshi accounts for most of the reported sports open interest, even though Polymarket leads the listed market counts.
- Market counts and open interest describe different aspects of activity; the larger catalog does not establish a larger amount of outstanding exposure.
- The unexplained total difference and the distinction between Polymarket and Polymarket US warrant care when comparing the figures.
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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