# Polymarket suspected insider trading investigation > Live situation record from CLSTR: https://clstr.news/situations/polymarket-suspected-insider-trading-investigation > Updated: 2026-08-23T11:21:03.000Z. Sources: 18. Developments: 2. Research from the non-profit Anti-Corruption Data Collective (ACDC) suggests that over 150 wallets on the prediction market Polymarket may have traded using non-public U.S. military information. The investigation identified a group of highly successful traders, referred to as ‘Orcas,’ who achieved an average win rate of 97.2% on military and defense-related markets, collectively earning approximately $8 million. Detailed analysis of these ‘orca’ wallets revealed a pattern of newly created accounts placing rapid, highly successful bets on niche markets before withdrawing funds and disappearing. The ACDC noted that 52% of high-risk bets regarding U.S. military actions were successful, whereas the success rate for all other markets was only 14%. The findings have raised national security concerns, as such trading could broadcast signals exploitable by foreign adversaries. Experts warn that patterns of suspicious individual bets followed by large-scale operations from bots and major investors could compromise military secrets and attract interest from foreign intelligence agencies. ## Timeline ### 2026-08-23: Polymarket wallets suspected of using military intelligence for $8M in profits An investigation suggests 152 Polymarket wallets earned $8 million using potentially leaked U.S. military intelligence, boasting a 97.2% success rate on high-risk defense bets. 2 sources. https://clstr.news/cluster/polymarket-wallets-suspected-of-using-military-intelligence-for-8m-in-profits ### 2026-08-20: Polymarket wallets suspected of trading on U.S. military secrets A research report suggests over 150 Polymarket wallets may have used U.S. military secrets to place highly successful bets, earning $8 million with a 97.2% win rate. 16 sources. https://clstr.news/cluster/polymarket-wallets-may-have-traded-on-us-military-secrets --- Cite as: Polymarket suspected insider trading investigation. CLSTR, https://clstr.news/situations/polymarket-suspected-insider-trading-investigation