US Regulator Warns of Manipulation Risks in Mention Markets on Prediction Exchanges

The landscape of prediction markets is undergoing a significant shift as the U.S. Commodity Futures Trading Commission (CFTC) intensifies its scrutiny of so-called mention markets. These contracts allow traders to wager on whether a specific person will utter certain words during a speech, earnings call, or on social media. They also cover physical actions, such as shaking a hand or appearing in a photograph. The Division of Market Oversight has now issued an advisory stating that these types of contracts will be viewed as presumptively susceptible to manipulation.

The core of the issue lies in the fact that the outcome of these markets is often controlled by a single individual or a small group. Unlike a sports match or an economic data release, the settlement condition of a mention market can be easily caused or prevented by the subject. This creates a high risk of rigging, as those close to the subject—such as speechwriters or assistants—possess material non-public information. The CFTC now expects a heightened showing from any exchange seeking to list such products, shifting the burden of proof to the market operators.

Numbers and facts

Recent enforcement actions highlight the severity of the risks. On August 28, former White House teleprompter operator Gabriel Perez was ordered to disgorge $107,539.02 in profits and pay a civil penalty of $65,000. Perez had accessed Donald Trump's prepared remarks roughly one hour before delivery and traded on those insights. Similarly, on July 31, former congressman George Santos settled for $35,000 after trading on his own attendance at the State of the Union address. Both individuals received three-year trading bans. These cases were facilitated by referrals from the exchange Kalshi, which the CFTC credited for assisting in the investigations.

Verification remains a major hurdle. In one instance, Kalshi ran a market on a ribbon-cutting ceremony involving Trump. Although the event took place and Trump spoke for three minutes, the audio was not clear enough for observers to verify what was said. This lack of external verifiability is a primary concern for the regulator.

"Regulatory clarity drives sound markets. Pleased to see staff provide guidance on the potential risks and unique considerations associated with the listing of mention markets on CFTC-regulated exchanges." - Mike Selig, CFTC Chairman

Background

The CFTC oversees approximately $600 trillion of the global $1.2 quadrillion derivatives market. Mel Gunewardena, Director of International Affairs at the CFTC, noted in a recent speech at George Washington University that derivatives now lead price discovery across major asset classes. As markets move toward autonomous and programmable infrastructure, the need for robust oversight becomes more critical. The new advisory lists four factors for exchanges to consider: the legal or professional obligations of the subject, the ease of manipulation, the level of public scrutiny, and the robustness of the exchange's own surveillance systems.

Exchanges are now expected to identify potential insiders in advance and implement specific position limits and reporting requirements. This includes monitoring for traders who only profit in one specific category or who place trades immediately before information becomes public. The advisory also references the Commission's June proposal, which reached similar conclusions regarding sports contracts based on discrete player actions.

Why it matters for German players

For players in Germany, the regulatory situation is vastly different due to the Interstate Treaty on Gambling 2021 (GlüStV 2021). Mention markets and prediction markets of this nature are not permitted under German law. The Gemeinsame Glücksspielbehörde der Länder (GGL) only authorizes sports betting and virtual slot games that meet strict transparency and integrity requirements. Betting on the specific words of a politician or the actions of a celebrity would be considered illegal gambling in Germany. Furthermore, German players using offshore platforms lose the protections offered by the domestic legal framework, such as the 1,000 Euro monthly deposit limit and the LUGAS monitoring system. The risks of manipulation identified by the CFTC serve as a reminder of why German regulations remain so restrictive regarding non-sporting event betting.

What it means for GGL-licensed casinos

GGL-licensed operators are unlikely to ever offer mention markets, as they do not fit the criteria for regulated betting products in Germany. The GGL requires that all gambling outcomes are based on events that are not easily manipulated by individuals. The CFTC's stance confirms the dangers that German regulators have long warned about: that markets based on human behavior are ripe for insider trading and fraud. Licensed operators in Germany must continue to focus on maintaining high standards of integrity and ensuring that all betting markets are transparent and independently verifiable. This development in the US reinforces the necessity of the GGL’s strict oversight and the whitelist system, which protects the market from the types of manipulation currently plaguing international prediction exchanges.