Kalshi pulls ahead as Polymarket loses prediction trading share
CryptoBriefing, citing a widely shared post on X, reports Polymarket's share of prediction market volume has fallen from 96 percent to 27 percent over two years, with Kalshi now trading nearly three times Polymarket's volume. Kalshi held about 83 percent share among United States regulated platforms in October, with 2.05 billion dollars in open interest against 384 million dollars for Polymarket US.
According to CryptoBriefing, Polymarket’s share of prediction-market trading volume has declined from 96 percent to 27 percent over two years. The outlet’s account cites a widely shared post on X.
Kalshi now handles nearly three times Polymarket’s trading volume, according to the same report. The figures point to a substantial shift in the platforms’ relative trading activity over that period.
Regulated US platforms show a separate gap
Among United States regulated platforms, Kalshi accounted for about 83 percent of volume in October, CryptoBriefing reported. That measure covers a narrower group than the broader prediction-market share comparison.
Kalshi also had 2.05 billion dollars in open interest, compared with 384 million dollars for Polymarket US. Those figures measure outstanding positions rather than trading volume, providing a separate comparison of activity on the two platforms.
What it means for prediction markets
- Market scope matters: Polymarket’s 27 percent share and Kalshi’s approximately 83 percent October share refer to different platform groupings and should not be read as directly comparable.
- Volume and open interest are distinct: Kalshi’s reported lead extends across both measures, but outstanding positions are not the same as trading turnover.
- Attribution remains important: CryptoBriefing’s account cites a widely shared X post; the supplied material includes no source links for checking the underlying calculations.
Sources & attribution
- Published
- Source
- CryptoBriefingcryptobriefing.com
- Publisher
- https://cryptobriefing.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 CryptoBriefing”). 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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