Court lets soldier prediction market insider case advance to jury
A federal judge ruled October 26 that the first insider trading prosecution involving prediction markets will proceed to a jury. Judge Margaret Garnett declined to classify the contracts herself, leaving that question for jurors. The case involves a US soldier accused of trading on nonpublic information in prediction markets on Polymarket. No court has squarely addressed whether geopolitical event contracts fall under existing securities and commodities laws. The ruling opens a novel test of how traditional insider trading statutes apply to event-contract platforms.
A jury verdict in this case will create the first precedent for how insider trading laws apply to prediction market bets on military outcomes. Prosecutors will gain a template for charging defense and intelligence contractors who trade on classified information, while platforms face new pressure to monitor for Pentagon-linked accounts. The $400,000 prosecution precedent means any future leak carries felony weight, not just administrative discipline.
For Polymarket and Kalshi, the case adds a third enforcement front beyond CFTC rules and state gambling suits: criminal securities charges tied to national security information. Operators must now decide whether military and geopolitical contracts are worth attracting Justice Department attention that could spook institutional liquidity. A conviction would invite parallel prosecutions; an acquittal would leave platforms guessing where the line falls.
Joins the Pentagon's three-day-old ban on troops using nonpublic information on prediction markets as the second national-security framing of event-contract trading this week.