The U.S. House Committee on Oversight and Government Reform has asked the chief executives of prediction-market platforms Kalshi and Polymarket to submit internal records as it examines responses to suspected insider trading. Chair James Comer raised concerns about more than 80 bets with suspicious timing linked to a U.S. military operation involving Iran. He also cited worries that elected officials and government authorities may be profiting from nonpublic information.

Prediction market platform Kalshi has introduced new measures to block underage trading, including requiring facial recognition at app launch and asking some users to submit selfies, Axios reported. Kalshi Chief Executive Tarek Mansour said underage trading is already banned but additional steps are being implemented. The move comes amid growing concern about youth gambling. Mansour opposes raising the minimum trading age to 21, keeping it at 18.