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Goldman Sachs and Morgan Stanley Tighten Rules on Employee Prediction Market Trading

Goldman Sachs and Morgan Stanley Tighten Rules on Employee Prediction Market Trading
Banking · 2026
Photo · Eleanor Whitfield for Daily Digest Invest
By Eleanor Whitfield Markets Editor-in-Chief Jul 9, 2026 4 min read

Goldman Sachs and Morgan Stanley are tightening internal rules around employee participation in prediction markets, as platforms like Kalshi and Polymarket gain traction ahead of the US midterm elections. The banks are concerned that trading contracts tied to real-world events could create conflicts of interest, similar to those that already govern stock and bond trading.

What Are Prediction Markets?

Prediction markets allow people to buy and sell contracts whose payouts depend on the outcome of specific events, such as election results, economic data releases, or even weather patterns. For example, a contract might pay $1 if a particular candidate wins an election and $0 otherwise. These markets have existed for years but have recently exploded in popularity, with platforms like Kalshi and Polymarket attracting millions of dollars in trading volume.

Unlike traditional financial markets, prediction markets are often lightly regulated and operate in a gray area. Kalshi, for instance, is registered with the Commodity Futures Trading Commission (CFTC) as a designated contract market, while Polymarket is built on blockchain technology and is not CFTC-regulated. The growth of these platforms has caught the attention of regulators and financial institutions alike.

What the Banks Are Doing

Goldman Sachs has taken the most concrete step, explicitly limiting staff from trading event-based contracts that could pose conflicts. The bank's policy now treats prediction market trading similarly to trading in individual stocks or bonds, requiring pre-clearance for certain contracts and outright bans on others. Morgan Stanley, meanwhile, has added guidance for employees but has not spelled out its full policy, leaving some ambiguity about what is and isn't allowed.

The moves come as the US midterm elections approach, a period when prediction market activity typically spikes. Banks are wary of employees using inside information or appearing to trade on non-public knowledge about political or economic events that could affect their firms' clients or operations.

Why It Matters for Investors

For everyday investors, the tightening of rules at major Wall Street banks signals that prediction markets are being taken more seriously as a financial instrument. While these platforms are still niche, their growth could eventually lead to more mainstream adoption, potentially affecting how investors hedge risks or speculate on events.

However, the regulatory landscape remains uncertain. The CFTC has been scrutinizing prediction markets, and recent actions suggest it may impose stricter rules. For example, Kalshi recently sought CFTC approval to bring perpetual futures to FX, metals, and energy markets, a move that could expand its offerings but also attract more regulatory attention.

Investors should also be aware that prediction markets are not without risks. They can be volatile, and the lack of regulation on some platforms means there is little recourse if something goes wrong. As with any new financial product, it pays to understand the rules before diving in.

Broader Market Context

The crackdown on prediction market trading comes amid a broader trend of Wall Street firms tightening employee trading rules. In recent years, banks have faced increased scrutiny over conflicts of interest, leading to stricter policies on everything from personal stock trading to cryptocurrency investments. The moves by Goldman Sachs and Morgan Stanley are consistent with this trend.

Meanwhile, the broader market has been navigating a mix of geopolitical and economic uncertainties. For instance, stocks have held steady as US-Iran strikes and a Fed split keep markets on edge, while chip stocks surged on Nvidia supply hopes and SK Hynix listing. In this environment, prediction markets offer a way for traders to bet on specific outcomes, but they also introduce new risks that banks are keen to manage.

What to Watch Next

Investors should keep an eye on how other banks respond. If more institutions follow Goldman Sachs and Morgan Stanley, it could signal a broader shift in how Wall Street views prediction markets. Additionally, regulatory developments will be key. The CFTC's stance on platforms like Kalshi and Polymarket could determine whether these markets remain a niche curiosity or become a more established part of the financial landscape.

For now, the message from Wall Street is clear: prediction markets are no longer just a novelty. They are a financial instrument that requires the same level of oversight as any other trading activity.

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