Insider trading suspected in military betting on Polymarket

Abnormally high win rates in military and defense-related betting on Polymarket point to potential insider trading, according to a recent report from the U.S. non-profit investigative organization, the Anti-Corruption Data Collective (ACDC), cited by CoinDesk. The report, which analyzed trading data from January 2021 to mid-March 2026, found that the win rate in defense-related markets was 51.8%, compared to 14% for general political markets. It also pointed out that specific wallets made approximately $1.8 million in profits by placing large bets just before classified operations became public. ACDC recommended countermeasures such as strengthening user identity verification and withholding payouts on suspicious transactions.