Federal prosecutors have been asked to examine trades tied to former Rep. George Santos after an online prediction market flagged activity that looked off around his plans to attend President Trump's State of the Union. Investigators are looking at bets placed on the Feb. 24 address after Santos publicly said he would be in the gallery, then posted minutes into the speech that he had been waylaid at an airport. The referral is shaping up as an early test of how prediction markets get policed when public statements and trading lines start to blur.
Kalshi, the regulated exchange at the center of the dust-up, reported the suspicious trades to prosecutors and the Commodity Futures Trading Commission, according to the Associated Press. The outlet reports that Kalshi froze an account after flagging the activity and alerted investigators to trades placed ahead of the Feb. 24 market. Federal officials did not immediately comment, according to the report.
The referral was first reported by NPR, which cited people familiar with the inquiry and noted that Santos told the outlet he was unaware of any investigation and declined to confirm whether he has a Kalshi account. "I'm not saying yes, I'm not saying no," Santos told NPR when asked if he held an account on the platform, according to NPR. NPR also reported that Kalshi's odds on Santos appearing had been near 75% the day before the speech and plunged after his post on X.
Market Swings And Social Posts
On the eve of the State of the Union, traders had heavily bet that Santos would show up, with Kalshi's market pricing his attendance at roughly three-quarters likely before his travel tale hit social media. Prices then crashed after his airport message, according to reporting from the Associated Press. Forum threads and social-media users quickly accused him of gaming the market, sharing screenshots of trades and losses that fueled outrage among retail bettors. Kalshi has previously said in enforcement actions that it will suspend accounts and refer suspicious behavior to regulators.
Regulators Are Already Watching
The Commodity Futures Trading Commission has signaled tougher oversight of event-contract markets, and Kalshi has repeatedly reported suspicious activity to the agency, according to a CFTC press release and congressional scrutiny. In May, the House Oversight Committee opened a probe into insider trading on Kalshi and rival platform Polymarket and requested documents from both, per the House Oversight Committee. Together, those moves mean any referral could trigger both civil enforcement by the CFTC and a criminal review by the Justice Department.
Why Prosecutors Might Pursue Charges
Legal experts say that using nonpublic information, or strategically misleading public statements, to profit on a regulated exchange can spark civil or criminal enforcement under the Commodity Exchange Act and federal fraud laws. Recent cases show investigators are willing to follow trading footprints in prediction markets, with prosecutors charging individuals accused of exploiting such platforms, including high-profile actions tied to rival sites, according to reporting by the Washington Post and KPBS. Even when platforms police themselves, suspending or fining users, federal regulators can still seek their own civil penalties or criminal charges if they believe there is evidence of intent and misuse.
For now, the probe remains in its early stages: Kalshi's referral prompted the review, and federal officials have not announced any charges. The episode adds to a growing list of enforcement questions hanging over prediction markets as regulators, Congress and the platforms themselves try to draw the lines around a fast-growing corner of online trading.
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