Comer launches investigation into prediction markets insider trading

House Oversight Chair James Comer (R-Ky.) on Friday launched an investigation into prediction market platforms Kalshi and Polymarket to determine whether their users are using nonpublic or classified information to engage in insider trading. Comer sent letters to Kalshi CEO Tarek Mansour and Polymarket CEO Shayne Coplan on Friday seeking details and internal records showing...

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