Kalshi CEO Tarek Mansour told Front Office Sports that he views CME Group, Robinhood, and sportsbook operators as greater competitors than Polymarket. Kalshi holds about 91% of the regulated US prediction market share, with $1 billion of $1.6 billion industry open interest and 97% of active markets. Over the past 30 days, Kalshi traded $9.8 billion versus Polymarket's $9.9 billion in raw volume. Mansour wants Polymarket to enter the regulated space, citing insider trading cases on its offshore platform that tarnish the industry. The CFTC proposed a 267-page rule on June 10, allowing most sports contracts but banning in-game props, officiating bets, and pre-collegiate sports, with a 45-day comment period. Both platforms gained reach when Google Finance integrated their data. Mansour's comments reframe the rivalry, emphasizing a wider competitive field including CME's FanDuel Predicts launch in December, Robinhood's prediction markets hub built on Kalshi's exchange, and entries by DraftKings, Novig, and Coinbase.

Key facts

• Kalshi CEO names CME Group, Robinhood, sportsbooks as bigger rivals than Polymarket.
• Kalshi holds ~91% regulated US market share, $1B of $1.6B open interest.
• Last 30 days volume: Kalshi $9.8B vs Polymarket $9.9B.
• CFTC proposed rule on June 10 allows most sports contracts, bans in-game props.
• Insider trading cases on Polymarket platform taint industry, says Mansour.

KeyAudit data perspective