The U.S. Department of Justice has arrested Gannon Ken Van Dyke, a U.S. soldier accused of using advance knowledge of the January operation that led to the capture of Venezuelan leader Nicolas Maduro and his wife, Cilia Flores, to profit on Polymarket, one of the largest event-based prediction platforms.
According to prosecutors, Van Dyke placed more than $33,000 in bets just hours before the operation was carried out. The wagers were tied to the timing and outcome of Maduro’s removal from Venezuela. The DOJ alleges those trades generated more than $400,000 in profit, after which he withdrew the proceeds and attempted to delete his account.
A high-profile insider trading case for prediction markets
Jay Clayton, U.S. Attorney for the Southern District of New York, said Van Dyke allegedly abused the trust placed in him by the U.S. government by using classified information about a sensitive military operation for personal gain. He has been charged with three counts under the Commodity Exchange Act, one count of wire fraud, and one count of unlawful monetary transactions. If convicted on all counts, he could face up to 60 years in prison.
The case is shaping up to be one of the first major prosecutions centered on insider trading in prediction markets. As platforms like Polymarket gain traction, questions have intensified over whether users with privileged or operational knowledge can exploit event contracts in ways that resemble securities or commodities market abuse.
Polymarket says it referred the matter to authorities
On social media, Polymarket said it had identified the user involved, referred the matter to the DOJ, and cooperated with the investigation. The platform stated that insider trading has no place on Polymarket and said the arrest shows its systems are working.
Still, the report highlights a structural challenge: despite policy updates, Polymarket’s roots in decentralized infrastructure mean users may still participate without providing full KYC information. That makes enforcement and deterrence more difficult, especially in fast-moving geopolitical markets.
Rule changes came in March, but criticism persists
In March, Polymarket updated its rules to explicitly classify trading by people who can influence an event’s outcome as insider trading. Even so, the platform has continued to face criticism over controversial markets tied to war and national security, including a market on whether a nuclear bomb would detonate before year-end, which was later removed.
Other contracts, such as bets tied to the rescue of a missing airman in Iran, also drew backlash from U.S. lawmakers. Taken together, the Van Dyke case puts renewed focus on the legal, ethical, and compliance risks facing prediction markets as they expand into increasingly sensitive real-world events.