Kalshi has removed all sports-related mention markets from its platform as the Commodity Futures Trading Commission reviews the category, raising questions about the future of speech-based betting contracts
Kalshi has temporarily removed all sports-related mention markets from its U.S. platform following a regulatory review initiated by the Commodity Futures Trading Commission (CFTC). The move comes as federal regulators examine whether contracts allowing bets on specific words spoken during sports broadcasts meet federal standards for market integrity and manipulation risk.
Regulatory Scrutiny of Mention Markets
The CFTC's inquiry focuses on so-called "mention markets," which let users wager on whether certain words or phrases—such as "MVP," "ankle," or "redshirt"—will be spoken by sportscasters during live events. According to sources familiar with the matter, the regulator is assessing whether these contracts are "readily susceptible to manipulation," a key compliance requirement for event contracts under federal law. Kalshi has stated that all sports-related mention markets are suspended "until further notice," with no timeline for their return.
Impact on Kalshi's Trading Volume
Sports-related mention markets have represented a significant portion of Kalshi's activity, accounting for more than 80% of the platform's weekly trading volume. The removal of these contracts marks a substantial contraction in Kalshi's sports vertical, though the platform continues to offer mention markets tied to political events, corporate earnings calls, and live television newscasts. The regulatory review follows a recent case in which a Kalshi user reportedly profited from bets on words spoken by President Trump, prompting the company to refer the matter to federal authorities after detecting suspicious trading patterns.
Manipulation Concerns and Industry Response
Federal regulators and Kalshi's legal team have both raised concerns that mention markets based on speech may be inherently vulnerable to manipulation, especially when participants have access to inside information or influence over the outcome. While Kalshi has advocated for the category as a way to attract new users, the company is now facing increased legal exposure, including more than two dozen lawsuits from states and tribal entities related to its sports betting operations. Other platforms, such as Polymarket, offer mention markets only on their international sites, keeping these products outside CFTC jurisdiction in the U.S.
The mechanics of mention markets have also led to unusual settlement outcomes. In one high-profile example, a Fox sportscaster misidentified Matt Damon as Brad Pitt during a World Cup broadcast, and several news outlets repeated the error. Kalshi's contract settled in favor of Pitt's attendance, resulting in collective losses of $287,866 for bettors who wagered against that outcome, in line with the platform's published contract rules.
Event contracts, including mention markets, are regulated under federal law as a form of financial derivative. Platforms must self-certify that each contract is not easily manipulated and complies with CFTC rules. The current review highlights the challenges of applying these standards to speech-based markets, where outcomes can be influenced by a small number of individuals or even by reporting errors. The CFTC's findings could shape the future availability of such products in the U.S. prediction market landscape.
Event contracts, sometimes called prediction-market contracts, allow users to bet on the outcome of real-world events, ranging from election results to specific statements made during broadcasts. In the U.S., these products are regulated by the CFTC, which requires platforms to demonstrate that each contract is not susceptible to manipulation and serves a legitimate hedging or informational purpose. The distinction between event contracts and traditional sports wagers is important for both regulatory oversight and consumer protection, as different rules and enforcement mechanisms apply.
