Race to Unmask Insider Bets in Prediction Markets Is Heating Up

At a time when people are using prediction markets to bet on whether the US will take control of Greenland, the race to identify potential insider trading on the platforms is intensifying.

Unusual Whales, a financial data provider best known for its annual report on congressional stock trading, has launched a tool that scours the prediction platform Polymarket for unusual activity and suspected insider bets.

“We thought prediction markets were almost a required expansion for us because the next big insider trade might not be in Congress, it might not be in the stock market, it may be in prediction ...