Kalshi Issues First-Ever Lifetime Ban, Targets Former Congressman George Santos

Prediction market platform Kalshi has issued its first-ever lifetime trading ban, targeting former U.S. Representative George Santos over allegations of manipulative trading tied to his own public appearance. According to the company, Santos earned roughly $18,000 by betting on whether he would attend a presidential address earlier this year.

Details of the Alleged Manipulation

Kalshi stated that Santos placed large trades in a market where the outcome depended directly on his own attendance at the event. The company said he then made public statements about his attendance, some of which were misleading, in an apparent attempt to influence contract prices. Santos ultimately did not attend the event, the outcome he had financially bet on.

Financial Penalties and Lack of Cooperation

In addition to the lifetime ban, Kalshi fined Santos more than $70,000. The company noted that his ban became permanent due to his lack of cooperation during the investigation, while other individuals involved in separate cases received temporary bans after cooperating.

Broader Industry Crackdown on Trading Abuse

This action comes amid a wider push across the prediction market industry to address manipulation and improper trading behavior. Separately, a federal regulator fined a former White House staffer more than $170,000 and imposed a three-year trading ban for placing bets tied to public remarks made by prominent officials, with penalties reduced due to cooperation with investigators.

Rival Platform Highlights Its Own Safeguards

Meanwhile, competing prediction market Polymarket says it uses machine learning, blockchain analysis, and trade surveillance to detect suspicious activity, particularly as scrutiny increases ahead of U.S. midterm elections. The company reported referring more than 100 suspicious cases to authorities, including incidents involving alleged misuse of sensitive information for betting purposes.