CFTC Warns of Manipulation in Prediction Markets
The U.S. regulator is focusing on contracts tied to statements and behavior by public figures, a segment where Kalshi and Polymarket have already been under pressure for some time.

Key Takeaways
- The CFTC warns that mention markets on prediction platforms carry extra manipulation risk.
- According to the regulator, these contracts are harder to assess than outcomes that can be independently verified.
- Kalshi and Polymarket have been under scrutiny for some time, while the CFTC continues to tighten its grip on prediction markets.
The U.S. regulator CFTC has issued new guidance for so-called mention markets on prediction platforms like Kalshi and Polymarket. According to the regulator, bets on what a person says or does bring extra risks of manipulation, which makes these contracts harder to clear through regulatory review.
Stricter Review for Mention Markets
The CFTC says this kind of market is different from contracts with outcomes that are independently and externally verifiable. In mention markets, the outcome depends on the behavior of a named person, and according to the regulator, that behavior is not always objectively measurable.
That is why the CFTC says these markets are especially vulnerable to manipulation in practice. The regulator reminds platforms that they may only offer derivatives that are not easy to manipulate.
The new guidance does not fully rule out mention markets. Instead, the CFTC outlines which conditions could potentially make a contract stronger, such as independent verifiability, lots of public attention, and a formal, public setting around a public figure. The market design also has to account for outside factors that make manipulation expensive or difficult, according to the regulator.
Earlier Pressure on Kalshi and Polymarket
The move fits into a broader pattern in which the CFTC is tightening its hold on prediction markets. The regulator has also taken positions in court cases to stop states from gaining too much ground in this area, while at the same time emphasizing federal authority over these markets.
Kalshi and Polymarket have been under a microscope for some time. The CFTC previously took action against illegal betting in this segment, including in a case involving a former teleprompter operator for Donald Trump. Kalshi also imposed a lifetime trading ban on former U.S. Congressman George Santos after he was accused of betting on his own appearance at the State of the Union.
The broader debate over regulation of prediction markets has also been going on for some time. Kalshi clashes with states as CFTC prepares new rules shows how the sector is dealing with both federal and local regulators at the same time.
Why This Matters
For European crypto followers, this is especially relevant because prediction markets are increasingly sitting at the intersection of crypto, derivatives, and gambling rules. The CFTC's tougher tone could affect how platforms structure their offerings in the United States, while similar debates are also playing out outside the U.S. Spain already showed in May that regulators in other countries can also step in hard when licenses are missing.