Federal prosecutors have charged a Green Beret with using classified intelligence to earn more than $400,000 on Polymarket, marking the first DOJ prosecution of insider trading on a prediction market.
Federal prosecutors have charged a US Army Special Forces master sergeant with using classified intelligence to earn more than $400,000 on Polymarket, marking the first time the Department of Justice has prosecuted insider trading on a prediction market.
Gannon Ken Van Dyke, a Green Beret involved in the planning and execution of Operation Absolute Resolve — the clandestine January mission that seized Venezuelan leader Nicolás Maduro and his wife Cilia Flores — allegedly created a Polymarket account on 26 December 2025, days before the operation launched. Over the following week he placed 13 bets totalling roughly $33,000 across contracts tied to whether US forces would land in Venezuela, whether Maduro would be removed from power, and whether a full-scale invasion would follow.
His largest position — a $32,537 wager that Maduro would be out of office by 31 January — returned a 1,242 per cent profit. Total winnings across all 13 bets came to approximately $409,881, according to the DOJ. The kind of return that, in any other market, would have triggered a compliance review within hours.
The indictment, unsealed on 23 April, lays out five charges: unlawful use of confidential government information for personal gain, theft of nonpublic government information, commodities fraud, wire fraud, and engaging in a monetary transaction derived from unlawful activity. The Commodity Futures Trading Commission filed a parallel civil case, treating the Polymarket contracts as swaps — the same regulatory classification the platform itself has fought to establish in its battles with state regulators.
That classification matters. If prediction market contracts are swaps under CFTC jurisdiction, then insider trading rules developed for commodities and derivatives markets apply to them. Van Dyke's case hands the CFTC exactly the precedent it needs to assert that its enforcement framework isn't merely theoretical.
The timeline prosecutors have assembled is damning. Van Dyke didn't trade on vague geopolitical instinct or diplomatic chatter. He was, according to the indictment, directly involved in planning the very operation he was betting on. The information asymmetry wasn't the kind a connected analyst might exploit; it was operational-level intelligence about a military strike on a foreign head of state.
When journalists began flagging unusual trading activity in Maduro-related contracts on Polymarket in early January, Van Dyke moved quickly. He contacted the platform on 6 January asking it to delete his account, claiming — falsely, prosecutors allege — that he'd lost access to the associated email address. He then routed most of his winnings through a foreign cryptocurrency vault before parking them in a newly opened brokerage account. The DOJ has a track record of pursuing crypto-linked financial crimes aggressively — and the digital trail Van Dyke allegedly left behind made the tracing straightforward.
The case sits at the intersection of two debates consuming Washington's financial regulators. The first is whether prediction markets are financial instruments or gambling — a question now working through multiple federal circuits, with the CFTC, Kalshi, and several state attorneys general all pulling in different directions. The second is whether the existing enforcement apparatus can keep pace with platforms that settle in crypto, operate across borders, and attract participants whose informational advantages were never contemplated by the rules written for Chicago trading pits.
Polymarket has cooperated with the investigation. The platform has positioned itself as a legitimate financial venue alongside competitors like Robinhood's prediction market product, rather than a betting shop. The Van Dyke case tests that framing. A legitimate financial venue that a soldier can use to monetise classified intelligence from a war zone — without triggering any real-time detection — raises uncomfortable questions about the maturity of the market's surveillance infrastructure.
The DOJ's press release made a point of noting that this is the first prosecution of its kind. That framing is deliberate. Prediction markets have grown from a curiosity into a multi-billion-dollar asset class, particularly since the 2024 US presidential election sent volumes surging. Until now, the enforcement risk for participants trading on nonpublic information was largely theoretical. Van Dyke's arrest converts that risk into a criminal record.
Several Republican lawmakers have already called for Van Dyke's pardon, framing the case as overreach against a soldier who helped capture a hostile foreign leader. That argument conflates the legality of the military operation with the legality of profiting from advance knowledge of it. The two are separate questions, and the indictment treats them accordingly.
Van Dyke faces up to 25 years in federal prison if convicted on all counts.
