Google engineer charged with $1.2 million insider trading via Polymarket
Synopsis
Key Takeaways
US authorities have charged Michele Spagnuolo, a 36-year-old Italian citizen and Google software engineer based in Switzerland, with allegedly exploiting confidential company data to pocket approximately $1.2 million in profits through trades on prediction market platform Polymarket. The Department of Justice (DOJ) unsealed the complaint following Spagnuolo's appearance before a US magistrate judge in Manhattan.
The Charges
Spagnuolo faces three counts: commodities fraud, wire fraud, and money laundering, all stemming from an alleged insider trading scheme. Prosecutors allege he operated under the alias 'AlphaRaccoon' on Polymarket, leveraging non-public information gleaned from his privileged access to Google's internal data systems and confidential software tools.
The DOJ noted that Spagnuolo had formally acknowledged the company's confidentiality and ethics policies — making the alleged breach a deliberate circumvention of rules he had explicitly agreed to uphold.
How the Scheme Allegedly Worked
Between 15 October 2025 and 4 December 2025, the account attributed to Spagnuolo allegedly placed approximately $2.75 million in wagers across Polymarket markets tied to Google-related events. Once the underlying information became public and the prediction markets settled, the account reportedly generated $1.2 million in net profits, according to investigators.
Prosecutors allege the pattern was consistent: Spagnuolo would access internal Google information, then place trades on Polymarket shortly thereafter — before that information entered the public domain.
What Authorities Said
US Attorney Jay Clayton was unequivocal in his statement on the case. 'Corporate insiders cannot use confidential business information to turn a profit in our markets,' Clayton said. The Federal Bureau of Investigation (FBI) echoed the charge, alleging that the accused abused privileged access to place trades on non-public information.
Potential Penalties
If convicted on all counts, Spagnuolo faces a maximum of 10 years in prison for commodities fraud and up to 20 years each for wire fraud and money laundering, though the DOJ noted the final sentence would be determined by the court. The case marks one of the first high-profile prosecutions involving alleged insider trading on a decentralised prediction market platform.
Broader Significance
This comes amid growing regulatory scrutiny of prediction markets, which have expanded rapidly in the US following legal changes that permitted event-based financial contracts. Notably, Polymarket — which operates on blockchain infrastructure — had previously attracted attention for its political forecasting during the 2024 US presidential election. The Spagnuolo case signals that US prosecutors are now actively monitoring such platforms for potential market manipulation and insider activity. How courts interpret 'commodities fraud' in the context of decentralised prediction markets could set a significant legal precedent going forward.