Suspicious activity involving large-volume trades on the prediction market Polymarket occurred in the 24 hours preceding the commencement of military operations by the United States and Israel against Iran, according to a report published March 8, 2026, by the Portuguese newspaper Público. The report details a surge in bets exceeding $1,000 on Polymarket concerning the potential for U.S. Military action.
Público’s reporting suggests the possibility of insider information being utilized, prompting scrutiny of trading patterns on the platform. Polymarket, described as “The World’s Largest Prediction Market™,” allows users to trade shares based on the outcomes of real-world events, spanning politics, finance, sports, and culture.
Intercontinental Exchange (ICE), a global technology and data provider, announced a strategic investment in Polymarket in 2025, becoming a distributor of Polymarket data to institutional investors worldwide. This investment suggests a growing interest in the predictive capabilities of such markets among established financial entities.
The Polymarket platform features various market types, including moneyline bets, spreads, totals, and player props, enabling traders to speculate on a wide range of outcomes. Recent activity on Polymarket, as of March 6, 2026, included a market for a Morocco Botola Pro game between IR Tanger and COD Meknès, with trading volume reaching $0.00. Another market focused on the upcoming Brazil Presidential Election, scheduled for October 4, 2026, shows Luiz Inácio Lula da Silva currently favored with 46% of the volume, followed by Flávio Bolsonaro at 36.4%.
As of January 22, 2026, Polymarket hosted a market specifically addressing the question of whether the U.S. Would strike Iran, with real-time odds available for trading. The timing of the increased betting activity reported by Público directly precedes the military actions, raising questions about potential foreknowledge influencing the trades.
Neither Polymarket nor relevant government agencies have publicly commented on the reported surge in betting activity or any potential investigation into possible insider trading.
