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US prosecutors charge soldier over $409,000 in Polymarket bets

Enforcement & compliance

US federal authorities charged Army Master Sgt. Gannon Ken Van Dyke with using classified information to bet on Polymarket before the public announcement of Nicolás Maduro’s capture. Prosecutors allege he wagered about $33,000 and made roughly $409,000 in profit; the charges include commodities fraud and wire fraud. Polymarket said it flagged the trades and co-operated with investigators.

The prosecution puts the use of confidential information on prediction markets under scrutiny for platforms and regulators.

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Regulation

Kalshi CEO defends prediction-market transparency amid enforcement cases

Kalshi chief executive Tarek Mansour defended prediction-market transparency at DC Fintech Week, saying visible transactions help identify suspicious activity. The report cited enforcement actions involving George Santos and Gabriel Perez, as well as a criminal case involving alleged trading by Gannon Ken Van Dyke. Kalshi said it has added employer disclosures and compliance checks for contracts involving potentially sensitive information.

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