A bipartisan group of US lawmakers has introduced the Public Integrity in Financial Prediction Markets Act of 2026, aiming to prevent government officials from profiting off non-public information. The bill targets activity on platforms like Kalshi and Polymarket, where users can place bets on real-world events.

If passed, the legislation would require officials to disclose trades over $250 and face penalties for violations. The move reflects growing concern that prediction markets could become a new avenue for insider trading, especially as their influence continues to expand.