Polymarket's approximately $200 million transactions in the first half of the year have been flagged as potential insider trading

According to Bloomberg, the suspicious transaction amount marked on Polymarket from January 1st to June 30th this year was approximately $200 million. Polysights analysis shows that related transactions have characteristics such as creating new accounts and placing large bets, with geopolitical and war related markets driving abnormal trading volume growth. The top 1% of profitable wallets generate more than half of their profits, and 57% of related wallets are created less than 24 hours before transactions. Some traders have made a total profit of $1.6 million in the relevant markets of Iran and Venezuela through multiple associated wallets and order splitting operations, such as 38 associated addresses. Polymarket has handed over nearly 100 wallets to law enforcement agencies, and Kalshi has also strengthened identity and employment information checks.