
The NFL has asked Kalshi and Polymarket to halt contracts tied to sports events it considers vulnerable to manipulation, while CFTC Chair Michael Selig says regulators will assess those integrity risks alongside broader legal challenges.
CFTC Chair Michael Selig said regulators will assess manipulation risks in sports-related prediction market contracts as the NFL seeks tighter limits on offerings from Kalshi and Polymarket. The league sent letters to both platforms seeking to stop contracts tied to easily manipulated or predetermined sports events. The dispute adds to growing scrutiny from lawmakers and several U.S. states that are also challenging sports-related prediction markets.