The online prediction market Kalshi announced on Monday, August 31, 2026, that it has issued a lifetime ban against former U.S. Rep. George Santos (R-NY). The company’s compliance department concluded that Santos likely engaged in insider trading by betting against his own attendance at the State of the Union address in February 2026.
Santos was expelled from the U.S. House of Representatives in December 2023 and later sentenced to seven years in prison for fraud and identity theft. He served 84 days before receiving clemency from President Donald Trump in October 2025. Leading up to the 2026 State of the Union, Santos publicly claimed he intended to attend the event, which influenced the odds on the prediction platform.
According to Kalshi, Santos placed a series of bets between February 2 and February 25 that he would not attend the address, while simultaneously making public statements to influence the market price. On the night of the speech, Santos posted on X that he was waylaid at an airport, causing the odds of his attendance to drop sharply. Kalshi reported that Santos realized a profit of $17,839 from the trades.
The platform has imposed a $71,356 penalty against Santos and referred the matter to the Department of Justice (DOJ) and the Commodity Futures Trading Commission (CFTC). In a June 2026 interview with NPR, Santos called the insider trading accusations "preposterous" and stated his legal team was in contact with the DOJ. He previously addressed the matter on his podcast, noting that some people lost money while others made it, characterizing the situation as evidence of market fragility.
The scale of this specific case involved a reported profit of $17,839 for Santos, leading to a penalty of $71,356, which is four times the amount earned. For the broader market, the event saw millions of dollars in total bets placed on attendance outcomes. While the immediate financial impact is centered on Santos and the traders who lost money on the opposing side of his bets, the enforcement action sets a precedent for how regulated U.S. platforms like Kalshi monitor and penalize participants who have direct control over the events they are betting on.
Individual traders on these platforms may notice stricter verification or monitoring of "insider" participants following these investigations by the DOJ and CFTC. The case follows other recent federal charges involving prediction markets, including a U.S. soldier accused of netting $400,000 and a Google employee accused of netting $1.2 million through alleged insider activity. The DOJ investigation into Santos remains active, though specific court dates or potential criminal charges related to these specific trades have not been publicly announced as of August 31, 2026.