Polymarket bettors seem to have engaged in what can only be described as insider trading on a market that was specifically created to identify and catch individuals who attempt to leverage non-public information for their own financial gain. This raises serious concerns about the integrity of the trading environment and suggests a potential loophole or weakness that allowed these bettors to exploit the very system meant to prevent such unethical behavior. As a result, it calls into question both the effectiveness of the safeguards in place and the overall fairness of the marketplace.
source: https://www.coindesk.com/markets/2026/02/27/polymarket-bettors-appear-to-have-insider-traded-on-a-market-designed-to-catch-insider-traders