The Commodity Futures Trading Commission (CFTC) has issued an advisory highlighting the heightened risks of manipulation in certain prediction markets, particularly those known as “mention markets.” These platforms allow users to wager on whether a notable figure will say a specific phrase during a public appearance, raising questions about potential insider knowledge and market fairness.
Focus on Mention Markets and Manipulation Risks
According to the CFTC staff advisory released in September, prediction market contracts that depend on the actions or words of a single individual can be susceptible to undue influence and may not be independently verifiable. The regulator reminded Designated Contract Markets (DCMs) that they must comply with the Commodity Exchange Act’s core principles, including implementing robust trading rules to detect and deter manipulation.
The CFTC’s notice emphasized that the advisory does not establish new legal rights or rules, nor does it provide a “no-action” position for market operators. Instead, it serves as guidance for DCMs exploring the listing of mention markets and similar event-based contracts.
Regulatory Actions Against Polymarket in New York
Regulatory scrutiny has intensified for prediction market operators in the United States. New York’s Attorney General Letitia James recently filed a lawsuit against Polymarket, following a similar action against Kalshi earlier in the year. The lawsuit alleges that Polymarket operated a non-regulated gambling platform and offered event contracts to users under 21, which is prohibited in the state for sports wagering.
In response, Polymarket has moved to transfer the case to federal court and filed a countersuit against the state’s attorney general and gaming commission. The state seeks significant restitution, penalties, and damages, though the amount pursued is notably less than that sought from Kalshi in similar legal proceedings.
Statements from Key Stakeholders
New York Governor Kathy Hochul, addressing the lawsuit, criticized Polymarket for allowing underage users to access its platform. Polymarket’s chief legal officer, Neal Kumar, stated the company intends to vigorously defend itself and its users’ interests in court.
Allegations of Unusual Trading Activity at Kalshi
In a related development, Kalshi faced public allegations of suspicious trading activity, including claims of wash trading in crypto and perpetual futures contracts. According to a Wall Street Journal analysis, a substantial portion of Kalshi’s recent trades clustered around identical order sizes, raising concerns among industry observers.
Kalshi strongly denied the allegations, releasing a detailed explanation of its market-making structure and surveillance systems. The company maintained that it actively prevents self-trading and monitors for collusive behavior, stating there is no evidence of market manipulation on its platform. The CFTC, when asked, did not confirm or deny if an investigation was underway.
Implications for Prediction Market Operators
The recent CFTC advisory and ongoing legal actions in New York underscore the evolving regulatory landscape for prediction markets in the United States. Operators are being urged to implement strong compliance measures and ensure their contracts are transparent and resistant to manipulation, especially as authorities pay closer attention to event-based markets tied to individual actions or statements.
As the industry responds to these challenges, platforms and regulators alike will need to navigate a complex interplay of innovation, oversight, and consumer protection in the growing prediction market sector.

