JPMorgan flashes a red flag on Kalshi, Polymarket trading

JPMorgan Chase has circulated internal guidance to its 320,000 employees advising caution when using prediction-market platforms like Kalshi and Polymarket. The memo, viewed by Barron’s, stops short of a full ban but explicitly warns against trading contracts involving JPMorgan itself or sensitive financial sector topics, including stock prices, earnings, regulatory filings, and leadership changes. The guidance highlights concerns that bets on such matters—like predictions about Jamie Dimon’s successor or whether a major bank will beat earnings—could imply misuse of nonpublic information. JPMorgan’s approach contrasts with its usual compliance practices, as employees are not required to pre-clear these trades despite the bank’s strict oversight on most activities. Prediction markets have surged in popularity, with Kalshi and Polymarket processing billions in weekly trading volume. Institutional money and retail traders now participate, with platforms like Robinhood allowing direct purchases of Kalshi contracts. Intercontinental Exchange (ICE), the parent company of the New York Stock Exchange, invested roughly $2 billion in Polymarket last year. JPMorgan CEO Jamie Dimon has previously dismissed these platforms as largely gambling, though he acknowledged some traders engage in genuine research. The memo underscores the blurred line between informed speculation and insider trading, as the platforms themselves cannot distinguish between the two. The rise of these markets has forced Wall Street to confront regulatory and ethical risks, particularly as contracts expand into areas traditionally off-limits to public trading. JPMorgan’s guidance reflects broader unease about how prediction markets could enable misuse of insider knowledge in an unregulated space.