Polymarket Insider-Trading Bet May Have Attracted More Insiders

Feb. 26, 2026, 8:38 PM UTC

Can you insider-trade on an investigation into your own insider trading?

That is one of many questions that came up Thursday after the latest set of profitable, well-timed trades came under scrutiny on Polymarket, one of the largest exchanges in the nascent prediction market industry.

The case cropped up after a well-known crypto researcher, who operates under the pseudonym ZachXBT, said on social media that he was preparing to release the name of a company whose employees he believed had used non-public information to place profitable trades.

Polymarket created a contract that allowed customers to bet on the name of ...

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