Kalshi and Polymarket Implement Trading Restrictions to Prevent Insider Trading

Kalshi and Polymarket have announced new trading restrictions aimed at curbing insider trading on event contracts. According to NS3.AI, Kalshi will prohibit political candidates, athletes, sports personnel, and referees from participating in related markets. Meanwhile, Polymarket will restrict trading based on stolen confidential information, illegal tips, or attempts to influence outcomes. These measures follow the introduction of a bipartisan bill by U.S. lawmakers, which seeks to ban certain event contracts at CFTC-registered entities if they resemble sports bets or casino-style games.