Oversight Chair James Comer demands info from Kalshi, Polymarket CEOs over alleged insider trading
House Oversight Committee Chairman James Comer is investigating Kalshi and Polymarket for alleged insider trading. He has requested internal records from both companies to assess their compliance with legal obligations. The investigation aims to uncover insider trading practices and potentially lead to new legislation restricting participation in prediction markets by government officials.
- ▪James Comer has demanded information from the CEOs of Kalshi and Polymarket regarding insider trading allegations.
- ▪He has ordered the companies to provide documents detailing their identity verification and transaction monitoring processes by June 5.
- ▪The investigation follows concerns that government employees may exploit insider knowledge for financial gain on prediction markets.
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Business Oversight Chair James Comer demands info from Kalshi, Polymarket CEOs over alleged insider trading By Taylor Herzlich Published May 22, 2026, 11:02 a.m. ET See more of our coverage in your search results. Add The New York Post on Google House Oversight Committee Chairman James Comer is demanding information from the CEOs of Kalshi and Polymarket over accusations the prediction markets have allowed insider trading to run rampant. Internal records “are the only means by which bad actors can be identified and to determine whether platforms are meeting their legal obligations,” the Kentucky Republican wrote in a letter sent Friday to Polymarket CEO Shayne Coplan that was obtained by CNBC. A similar missive was sent Friday to Kalshi CEO Tarek Mansour, too. 4 Rep.
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