CFTC probes mention markets as Kalshi pulls sports bets

The Commodity Futures Trading Commission is reviewing prediction market “mention markets” over concerns that contracts tied to specific spoken words may be unusually easy to manipulate, NPR reported late Aug. 13, citing two people with direct knowledge of the inquiry.

Kalshi has responded by removing sports mention markets “until further notice,” according to the report. The inquiry has not been publicly confirmed by the CFTC. Both the regulator and Kalshi declined to comment to NPR, and the CFTC had not published an enforcement action or announcement describing the review as of publication.

Kalshi removes sports mentions while other word bets remain

Mention markets let traders buy contracts based on whether a person says a particular word or phrase. Sports versions have included wagers on whether broadcasters utter terms such as “MVP,” “ankle” or “redshirt.” NPR reported that Kalshi removed all such sports contracts as the regulator examines the category.

The suspension does not cover every mention market. Kalshi’s current page still shows active contracts tied to President Donald Trump, political appearances and corporate earnings calls. One Klarna earnings market, for example, has contracts tied to whether executives mention specific companies or business topics.

Polymarket also offers mention markets on its offshore platform, NPR reported, but its smaller CFTC-regulated U.S. exchange does not currently list them.

CFTC rules put manipulation at the center of the review

The regulatory question goes directly to one of the Commodity Exchange Act’s core requirements. Designated contract markets may list only contracts that are not “readily susceptible to manipulation.” They must also maintain surveillance and enforcement systems capable of preventing manipulation and distorted settlement outcomes, according to the CFTC’s current proposal.

That framework helps explain the concern around word bets. The CFTC has said in its broader prediction-market rulemaking that sports contracts based on aggregate performance can present lower manipulation risk when no single participant can determine the outcome through one action. A mention contract can work differently because one broadcaster, executive or politician may effectively determine settlement simply by saying a particular word. This comparison is an inference from the regulator’s published manipulation framework.

As previously reported, the CFTC has also warned prediction markets against broad template self-certifications, telling exchanges that each product needs enough detail for regulators to assess settlement methods, data sources and compliance controls.

Trump teleprompter case exposed the insider risk

The latest review follows a case involving Gabriel Perez, Trump’s longtime teleprompter operator. Kalshi identified suspicious trades tied to words in presidential appearances and referred the activity to the CFTC. Sources told Reuters that more than $90,000 in potential profits were frozen before they could be withdrawn.

As previously reported, Kalshi flagged the Trump teleprompter trades and referred them to federal regulators. Perez allegedly had advance access to prepared remarks for more than a dozen presidential appearances. The White House later removed him from his role.

The case was not the CFTC’s first encounter with event-contract manipulation. Former Rep. George Santos recently agreed to penalties over manipulative Kalshi trades tied to whether he would attend Trump’s State of the Union address.

What happens next for Kalshi mention markets

The immediate question is whether the CFTC seeks changes only to sports mention markets or concludes that some word-based contracts cannot satisfy its anti-manipulation standards regardless of subject matter. An anonymous person familiar with the inquiry told NPR the products are “potentially very easy to manipulate,” but that remains the source’s assessment rather than a formal Commission finding.

Kalshi could also modify contract structures, eligibility requirements or surveillance controls instead of abandoning the category. The company has already introduced employer disclosures for higher-risk markets and said it blocked more than 100 potential insider trades during the first quarter.

For now, sports mention markets remain suspended with no announced return date, while other mention contracts continue trading. A formal CFTC statement, additional Kalshi restrictions or changes to future self-certifications would provide the next clear indication of how broad the review becomes.