NFL asks prediction markets to halt contracts vulnerable to manipulation

The U.S. National Football League (NFL) has requested that prediction market platforms, including Kalshi and Polymarket, stop offering certain event contracts it deems vulnerable to manipulation, ESPN reported. Following consultations with the U.S. Commodity Futures Trading Commission (CFTC), the NFL sent an official letter to the platforms. The letter asks them to halt trading on contracts for events where individuals could easily manipulate the outcome, such as commentator remarks, player signings, coach firings, and in-game injuries. CFTC Commissioner Michael Selig said that if a league raises manipulation concerns about a proposed contract, the agency can prohibit its listing.