House lawmakers launch insider trading probe into Kalshi and Polymarket

The House Oversight Committee said on Friday that it is opening an investigation into Kalshi and Polymaket over alleged incidents of insider trading by users of the prediction markets. Rep. James Comer of Kentucky, the panel's chairman, sent letters to Kalshi CEO Tarek Mansour and Polymarket CEO Shayne Coplan requesting internal documents to determine what the companies are doing to deter insider trading. …