October 26, 2026

US Defense Secretary Imposes Total Ban on Pentagon Staff Using Insider Knowledge for Prediction Market Wagers

US Defense Secretary Pete Hegseth has instituted a strict, comprehensive ban prohibiting all Pentagon and defense agency personnel from using undisclosed information—both classified and unclassified—to place financial wagers on upcoming military actions and geopolitical outcomes.

The directive, issued via an official memo sent to senior defense officials and military leadership on Tuesday, specifically targets the growing popularity of decentralized prediction market platforms such as Kalshi and Polymarket. Under the new guidelines, any Department of War personnel found engaging in financial transactions tied to nonpublic operational details will face severe disciplinary consequences.

The policy change comes in response to mounting concerns over national security vulnerabilities, intelligence leaks, and ethical conflicts of interest within the ranks. Hegseth stressed that the convergence of modern, highly liquid prediction markets and sensitive military planning creates an unacceptable risk profile that adversaries can exploit.

Pentagon bans US forces from using military info to bet in prediction markets

"Make no minute why this matters. Our enemies watch movements in these markets," Hegseth wrote in the memo, emphasizing the high stakes involved in modern information warfare. "The lives of our Service members often depend on the enemy not knowing what is coming."

Beyond the immediate threat of operational security breaches—where sudden, unexplained volume spikes or specific odds shifts on prediction platforms could tip off foreign intelligence agencies to impending strikes or troop movements—Hegseth pointed to the psychological and professional hazards posed by financial incentives among personnel.

"Beyond operational security, financial stakes can warp judgment. A logistician with money riding on a strike date has an interest in that date. An analyst with a position on an outcome has an interest in that outcome," he added, underscoring how personal financial exposure can compromise objective military analysis and decision-making.

The newly minted Pentagon directive follows a series of high-profile legal actions involving military personnel and intelligence operatives using insider knowledge to trade on prediction platforms. Most notably, the policy arrives in the wake of an April federal indictment involving a US Army soldier.

Pentagon bans US forces from using military info to bet in prediction markets

In that case, prosecutors alleged that soldier Gannon Ken Van Dyke utilized classified operational details concerning the strategic capture of Venezuelan leader Nicolás Maduro to place successful wagers on Polymarket, ultimately generating more than $400,000 in profits. Court filings state that Van Dyke participated directly in planning and executing the sensitive operation before capitalizing on his advance knowledge of the regime-change outcome. He has pleaded not guilty to all charges.

The American case is not isolated. International military forces have grappled with similar breaches driven by the gamification of geopolitical events on blockchain-based betting platforms. In February, Israeli law enforcement authorities arrested and subsequently indicted a military reservist and a civilian. According to investigators, the pair allegedly leveraged classified operational intelligence to place speculative bets on Polymarket regarding precise Israeli military airstrikes against targets in Iran.

These incidents have sparked broader regulatory and legal debates across Washington and international capitals regarding how prediction markets should be monitored, regulated, or restricted when intersecting with state secrets and national security apparatuses. Financial regulators, including the Commodity Futures Trading Commission, along with defense watchdogs, have increasingly scrutinized how decentralized platforms handle insider trading and sensitive state data.

By closing the door on internal speculation, the Pentagon hopes to reassert control over information flows and safeguard service members from the temptations of financial opportunism tied to combat operations. The memo makes it clear that maintaining the element of surprise and preserving the integrity of the chain of command take absolute precedence over speculative financial activities.