Google employee made millions by sharing ‘Google Confidential’ information on prediction market Polymarket; charged with insider trading

Google’s software engineer has been charged for insider trading. The US prosecutors have charged Michele Spangnuolo, software engineer at Google with insider trading after he allegedly used the company’s confidential information to make more than n $1.2 million in profits on the prediction market platform Polymarket. According to the complaint unsealed in Manhattan federal court, Spagnuolo traded under the alias “AlphaRaccoon”. Between October and December 2025, he allegedly accessed Google’s internal data systems marked “Google Confidential” and placed bets on Polymarket tied to Google’s business outcomes. Prosecutors say he risked nearly $2.75 million and profited once the information became public.

Charges filed against Google’s software engineer Michele Spangnuolo