Former Congressman George Santos has been permanently barred from trading on Kalshi, the first permanent ban the prediction market has ever handed down, according to reporting by Sarah Wynn at The Block. In a notice of settlement of disciplinary action filed Monday, Kalshi said Santos broke its rules by trading a contract on whether he would attend the State of the Union address. He was ordered to pay a fine of just over $71,000.

The language in the notice is procedural rather than dramatic. Kalshi's compliance department said it had established "reasonable cause to believe" that Santos traded in certain markets tied to his own attendance at the address. No confession, no narrative, just a finding and a sanction.

That understatement is doing a lot of work. This is a private company deciding, without a statute telling it to, that a former member of Congress should never be allowed to touch its order book again.

Two penalties for one trade

Santos had already settled this matter with a federal regulator. Last month he reached a settlement with the Commodity Futures Trading Commission, which maintains that it has jurisdiction over prediction markets. The CFTC said Santos used trades on Kalshi to influence the outcome of his own State of the Union bet. Two weeks before the address, according to the agency, he made public statements about whether he would attend, and the price of the event contract moved significantly in response.

He paid $35,000 and neither admitted nor denied the agency's findings. His counsel, Joseph W. Murray, said Santos cooperated with the CFTC, that the State of the Union market was the first prediction market bet Santos had ever placed, and that Santos had booked hotel and airline reservations to Washington because he believed he was attending.

Then Kalshi arrived with a separate $71,000 fine and a permanent exclusion. Roughly $106,000 in combined financial exposure, and a lifetime lockout, arising from one trading episode.

This is the structural point that gets lost in the headline. Analytically, what happened to Santos is not a single enforcement action, it is a stacked one. A federal settlement resolved his exposure to the government. It did not resolve his exposure to the venue. Anyone who assumed that closing the file with a regulator closes the file entirely has now seen otherwise.

What he was actually accused of doing

Read the CFTC's theory carefully and it does not look like textbook insider trading. The agency's characterization, as reported, is that Santos made public statements that moved the contract price. Public statements. Not the misuse of confidential information about a third party.

The conduct alleged is closer to a person taking a position in a market whose outcome he personally controls, then talking in ways that move the price of that position. Call it self-referential trading. The information asymmetry is not stolen, it is inherent: only Santos knew what Santos intended to do, and only Santos could change it.

That distinction matters for anyone building or trading these venues. Prediction markets on political outcomes routinely list contracts whose resolution depends on the discretionary choices of named individuals. Those individuals are not employees of the exchange, not government officials in the traditional insider sense, and in many cases not obviously covered by anything Congress has written. The Santos episode suggests exchanges will treat participation by the subject of a contract as a rules violation regardless of how the conduct maps onto older legal categories.

That is analysis, not a reported conclusion. The notice itself does not spell out a doctrinal theory.

The pattern Kalshi is reacting to

The ban did not appear in isolation. Insider trading has become a live problem as prediction markets have scaled into a business worth billions.

In April, the Justice Department arrested an active-duty U.S. Army soldier accused of using confidential information to place bets on Polymarket ahead of the capture of former Venezuelan President Nicolás Maduro earlier this year.

Days before the Santos notice, the CFTC ordered Gabriel Perez, a former White House teleprompter operator, to pay more than $172,000 over charges that he used advance access to President Trump's speeches to trade "mention markets" on Kalshi.

A soldier with classified operational knowledge. A staffer who reads the speech before it is delivered. A politician who decides whether he shows up. Three different relationships to non-public information, three different fact patterns, one shared vulnerability: political prediction markets resolve on facts that a small number of people know first or control outright.

What the record does not tell us

The reporting does not indicate whether the $71,000 represents disgorgement, a penalty, or a mix. It does not say whether Santos admitted the Kalshi findings, though he did not admit or deny the CFTC's. It does not describe the appeal rights, if any, attached to a Kalshi disciplinary settlement, or whether the ban is portable to other venues.

Those gaps are worth flagging rather than filling. They also point at the next question for this sector: whether identity-based exclusion is even the right tool. Kalshi can ban a name. A venue built on permissionless rails faces a harder version of the same problem, which may explain why the Polymarket case in April ran through the Justice Department rather than a compliance department.

Santos was a New York congressman from January 2023 until his expulsion at the end of that year, following a House Ethics Committee investigation into misconduct involving ethics violations. He is now the first person permanently banned from a major regulated prediction market. That combination is going to be cited for years, by regulators and by exchanges, and probably for different purposes.

Author’s note: This article is commentary and analysis for informational purposes. It is not legal advice, and no attorney-client relationship is created by reading it. Consult qualified counsel for advice on any specific situation.