Wall Street Giants Restrict Staff Trading on Prediction Markets Over Insider Risks

Key Facts

In a move reflecting heightened regulatory caution toward emerging financial tools, major Wall Street banks are tightening rules regarding employee participation in prediction markets. According to reports, leading institutions including Goldman Sachs and Morgan Stanley have implemented stricter controls to prevent staff from trading on event-based platforms. These restrictions come amid rising concerns over the potential for insider trading on venues such as Polymarket and Kalshi, where employees might leverage non-public information to gain an unfair advantage.

These internal policy shifts coincide with an explosion in prediction market activity, with platforms like Polymarket seeing trading volumes surpass $1 billion during major cycles according to market data. In the broader banking sector, peer performance shows JPM closed at $335.47 on July 9, 2026, while BAC stood at $58.3 as of July 8, 2026. Banks are increasingly prioritizing institutional integrity and compliance to avoid conflicts of interest that arise when staff use proprietary financial or political data for speculative personal gains.

Regarding current market levels, GS stood at $1,029.64 at close on July 8, 2026, while MS was positioned at $222.1 at close on July 6, 2026. Traders should monitor for any further regulatory guidance from U.S. authorities regarding the legal status of these speculative platforms. While the immediate economic calendar shows no direct catalysts for these instruments, the focus remains on upcoming quarterly compliance disclosures which may further detail the scope of these internal enforcement actions.