Kalshi, the prediction market platform, has permanently banned former U.S. Rep. George Santos for insider trading and market manipulation. The ban takes effect August 28, 2026, and comes with a $71,356 penalty after Santos earned $17,839.57 from contracts tied to his own attendance at the State of the Union address in February.
The trades that triggered the ban
Between February 2 and February 25, Santos placed large trades in markets whose outcomes depended on whether he would attend the State of the Union on February 24. Kalshi said Santos was prohibited from trading in those markets because his own actions could directly influence the results. The platform determined he violated that rule repeatedly, making money off contracts that were essentially bets on himself.
Kalshi's decision is permanent, meaning Santos cannot use the platform again. The penalty of $71,356 is roughly four times what he earned from the trades.
Santos's response and prior settlement
Santos fired back on X, accusing Kalshi of violating its own notices and deadlines. He didn't specify which notices or deadlines, but the post suggests he plans to contest the ban. This isn't his first run-in with regulators over trading. Last month, Santos reached a settlement with the Commodity Futures Trading Commission, agreeing to pay $35,000 without admitting or denying the findings. That case also involved trading in political event contracts.
Santos's legal history is long. He was expelled from the House in 2023, sentenced to more than seven years in prison in April 2025, had his sentence commuted by President Trump, and was released after serving less than three months.
A history of suspensions
Kalshi has taken similar action before. The platform previously suspended three U.S. political candidates for betting on election outcomes they were directly involved in. Those suspensions were temporary, though. Santos's lifetime ban marks a harsher step, reflecting what Kalshi described as a pattern of manipulation rather than a one-off mistake.
Regulatory pressure on prediction markets
The ban lands as prediction markets face growing scrutiny. Baltimore officials have sued Kalshi and Polymarket, and New York Attorney General Letitia James has filed a lawsuit against Kalshi. A separate lawsuit from FlightAware was withdrawn shortly after it was filed. These cases highlight the legal uncertainty around platforms that let users bet on political events, especially when the people involved in those events trade on them.
Santos's ban is set to take effect later this month, but his public response suggests he won't go quietly. Whether he challenges the penalty or the lifetime ban in court remains an open question.
