Wall Street banks rule on staff betting on prediction markets, sources say

Major Wall Street banks including Goldman Sachs, Morgan Stanley, JPMorgan Chase, Bank of America, and Citigroup have introduced or updated policies restricting employees from participating in prediction-market betting on financial, political, and macroeconomic events due to conflict-of-interest concerns. Repeated violations could lead to disciplinary action including termination and forfeiture of gains. Sports and entertainment prediction-market bets are excluded from the restrictions.