Commodity Futures Trading Commission (CFTC) staff told exchanges on September 22 that mention markets may be presumptively open to manipulation. Exchanges are expected to address four factors to list them, but no ban followed.
Mention markets are yes-or-no contracts on whether a person says a word during a speech, earnings call, or social post. Consequently, the outcome can rest in the speaker’s hands.
Why Does the CFTC Presume Mention Markets Can Be Manipulated?
The agency’s Division of Market Oversight (DMO) addressed the advisory to designated contract markets (DCMs), which are CFTC-registered exchanges.
Core Principle 3 of the Commodity Exchange Act bars exchanges from listing contracts readily susceptible to manipulation.
Most prediction market event contracts settle on outcomes no single person controls, such as election results or economic data releases.
A mention contract, by contrast, settles on one person’s conduct. That person, or someone close to them, may sway the result or learn it early.
The CFTC’s label also covers contracts on event attendance and interactions such as handshakes.
For example, the advisory cites a livestreamed podcast host and a catchphrase. A trader could tilt the outcome by paying for a shout-out.
In practice, the risk has materialized once already. On August 28, the CFTC ordered former White House teleprompter operator Gabriel Perez to pay $172,539.02.
He traded presidential mention contracts on Kalshi between December 2025 and February 2026, drawing on advance access to speeches.
The total includes forfeited profits, and Perez is barred from trading for three years.
Does a Presumption of Manipulation Mean a Ban?
The advisory creates no new obligations and does not necessarily speak for the full commission.
Instead, exchanges can list these contracts by rebutting the presumption in their product filings to the CFTC.
Duncan Hennes, the DMO’s acting director, signed the letter, which puts the burden on exchanges.
“DMO staff may view Mention Markets as presumptively readily susceptible to manipulation and accordingly expect a heightened showing in support of any submission seeking to list such contracts.”
Duncan Hennes, Acting Director of the CFTC’s Division of Market Oversight, in the letter.
Staff said the four factors are not an exhaustive list.
Two concerns of the speaker are legal or professional duties that deter tampering and exposure to outside pressure.
Who Sits Outside the CFTC’s Reach?
Polymarket, by comparison, lists mention markets only on its international exchange, which the CFTC does not regulate.
Separately, a judge who blocked Minnesota’s prediction market ban said Kalshi’s World Cup announcer mention markets likely are not swaps. That is the category tied to the CFTC’s exclusive jurisdiction.
The open question is whether staff guidance can steer a category that can move to venues outside the CFTC’s oversight.