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Prediction Market Kalshi Flags Suspicious Santos Expulsion Bet to Federal Prosecutors
• Kalshi filed a suspicious activity report over a large bet placed on George Santos's expulsion just days before a damning House Ethics report went public.
• The wager, reportedly worth tens of thousands of dollars, correctly predicted the expulsion outcome before the Ethics Committee's findings were widely known.
• The CFTC-regulated platform reported the trade to the U.S. Attorney’s Office for potential insider information or market manipulation.
• The case raises novel legal questions about insider trading within prediction markets tied to political events.
The regulated prediction market platform Kalshi has formally notified federal prosecutors of potentially suspicious trading activity linked to the congressional expulsion of former Representative George Santos, according to a report. The referral centers on a substantial wager that Santos would be removed from office, a bet placed shortly before the release of a pivotal House Ethics Committee investigation.
According to the report, an individual or entity wagered a sum reported to be in the tens of thousands of dollars on Kalshi’s market, accurately betting that Santos would be expelled by a specific date. The timing of the trade is under scrutiny, as it was placed mere days before the November 16, 2023, publication of the House Ethics Committee’s report. That investigation concluded there was “substantial evidence” of misconduct by the New York Republican, directly leading to his historic expulsion on December 1. The sequence of events suggests the trader may have acted on non-public information.
As a platform regulated by the Commodity Futures Trading Commission (CFTC), Kalshi is legally required to monitor for and report activity indicative of insider knowledge or market manipulation. The company’s compliance team filed a Suspicious Activity Report (SAR) with the U.S. Attorney’s Office for the Eastern District of New York, flagging the trade’s unusual size and prescient timing. Such a filing represents a compliance procedure and does not allege guilt, but it obligates law enforcement to review the matter.
This incident underscores the complex regulatory frontier where prediction markets intersect with political proceedings. It prompts serious questions about the applicability of laws governing insider trading and securities fraud to markets that allow wagering on real-world political outcomes. Santos, who faces a separate 23-count federal indictment on charges including fraud and money laundering, has pleaded not guilty to those charges. His office has not commented on the Kalshi trade. Federal prosecutors are now tasked with determining whether the bet constituted a federal violation, such as wire fraud, in a novel test for this growing financial sector.