Kalshi CEO Tarek Mansour doesn’t see Polymarket as his predominant competitor. He informed Entrance Workplace Sports activities that bigger buying and selling and betting gamers threaten his prediction market alternate greater than its closest rival.
Mansour named derivatives big CME Group, brokerage Robinhood and sportsbook operators because the rivals he watches most. His feedback recast a combat often framed as a two-horse race between Kalshi and Polymarket.
Why Mansour Seems Previous Polymarket
Kalshi dominates the regulated US prediction market. Financial institution of America analysts put its share at about 91%, with Polymarket second and Underdog third.
That lead lets Mansour deal with the rivalry in another way, a lot as Kalshi already overtook Polymarket on regulated turf final yr.
Uncooked quantity tells a more in-depth story. Over the previous 30 days, Kalshi traded about $9.8 billion in opposition to Polymarket’s $9.9 billion, in keeping with DeFi Price.
Kalshi nonetheless leads the place it counts. It holds roughly $1 billion of the $1.6 billion in business open curiosity and lists about 97% of all lively markets.
“Once I take into consideration competitors, I don’t take into consideration Polymarket, actually, as a lot as among the others,” FOS reported, citing Tarek Mansour, Kalshi CEO.
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A Wider Subject of Rivals
Mansour pointed first to CME Group, which launched FanDuel Predicts with the sportsbook in December. The app trades occasion contracts on sports activities outcomes and financial knowledge.
Robinhood complicates the image. It constructed its prediction markets hub on Kalshi’s personal alternate in 2025. It then started routing some World Cup and baseball contracts to Rothera, its venue with Susquehanna.
DraftKings, Novig and Coinbase have additionally moved into prediction markets, making second place exhausting to name.
Polymarket nonetheless leans on its offshore platform, which pulls heavy offshore buying and selling quantity from US customers on a VPN.
The 2026 World Cup lifted each, with a single World Cup winner market drawing tens of hundreds of thousands in each day bets.
Regulation Shapes the Rivalry
Mansour desires Polymarket to return beneath the regulated umbrella. He argued that insider buying and selling instances on its worldwide platform stain the entire business.
Two indictments sharpened that fear. Prosecutors charged Military soldier Gannon Van Dyke within the first federal case tied to prediction market bets. He allegedly turned about $33,000 into greater than $400,000 on the timing of the Maduro operation.
Weeks later, prosecutors indicted Google engineer Michele Spagnuolo. He allegedly made roughly $1.2 million betting on Google’s most-searched individual of 2025.
The CFTC then proposed a 267-page rule on June 10. It might allow most sports activities contracts whereas barring in-game props, officiating bets and pre-collegiate sports activities, with a 45-day remark window.
Each platforms additionally gained attain this yr when Google Finance built-in their knowledge.
For now, Kalshi controls the compliant US market whereas Polymarket and a widening area chase its lead.
The remark interval could determine how briskly that stability shifts.
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