Comer launches Congress probe into insider trading on Kalshi, Polymarket
Rep. James Comer, R-Ky., chair of the House Oversight and Government Reform Committee, announced Friday on CNBC’s “Squawk Box” that he is seeking information from the CEOs of Kalshi and Polymarket on their efforts to prevent insider trading on their platforms. Comer’s probe is the latest in a series of congressional attempts to rein-in the platforms. “Internal records held by prediction market platforms are the only means by which bad actors can be identified and to determine whether platforms are meeting their legal obligations,” Comer wrote in a letter sent Friday to Polymarket CEO Shayne Coplan and seen by CNBC. A similar letter, also seen by CNBC, was sent Friday to Kalshi CEO Tarek Mansour. “Therefore, the Committee requests documents and information to better understand how Polymarket implements identity verification for domestic and international account holders, enforces geographic restrictions, and detects anomalous trading activity to prevent insider trading across its global platform,” Comer’s letter continues. Polymarket did not immediately respond to a request for comment. Elisabeth Diana, Kalshi’s head of communications, said in a statement …









