A Google security engineer was arrested in New York and charged with commodities fraud, wire fraud, and money laundering for allegedly using internal company data to win $1.2 million on Polymarket. The case marks one of the most concrete examples yet of insider trading on a prediction market.

Michele Spagnuolo, a 36-year-old Italian citizen who worked as a Staff Information Security Engineer at Google, was taken into custody on May 27 by federal authorities in the Southern District of New York. He was placed on a $2.25 million bond and has not yet entered a plea.

The play: betting on what you already know

According to prosecutors, Spagnuolo had access to restricted marketing and search analytics data through his role at Google. He could see what people were searching for before those trends became public. He then allegedly used that nonpublic information to place strategic bets on Polymarket contracts related to Google search data.

His most notable play involved predicting that singer d4vd would be the number one most-searched person of 2025. That single bet reportedly transformed a small wager into $200K. When Google publicly announced its 2025 search trends on December 4, 2025, Spagnuolo’s predictions turned out to be remarkably accurate, because, prosecutors allege, he already knew the answers.

Over the course of his alleged scheme, Spagnuolo accumulated $1.2 million in profits from these trades. The charges, commodities fraud, wire fraud, and money laundering, carry significant potential prison time if he’s convicted.

A pattern, not an anomaly

Spagnuolo’s arrest didn’t happen in a vacuum. This is the second high-profile insider trading case connected to Polymarket in recent memory.

The platform has already dealt with the case of Gannon Ken Van Dyke, a soldier who allegedly made roughly $400K from bets placed using classified information. That case established a precedent that federal prosecutors are willing to treat prediction market manipulation with the same seriousness as traditional securities fraud.

Public accusations of insider trading have surrounded Polymarket for some time, fueled by significant wins from anonymous wallets that seemed to know outcomes before they happened. Polymarket has reportedly been tightening its security measures in response to growing concerns about information asymmetry on its platform.

What this means for prediction markets and investors

The Spagnuolo case is particularly significant because it involves a major tech company’s internal data being weaponized on a crypto platform. Google search trend data is essentially a window into what the entire internet is thinking. Having early access to that data and trading on it is the prediction market equivalent of front-running, a practice that’s been illegal in traditional finance for decades.

Federal prosecutors are clearly willing to apply existing fraud and commodities statutes to prediction market activity. That means anyone trading on material nonpublic information on these platforms faces the same legal exposure as someone doing it on the NYSE.

The charges also raise uncomfortable questions for employers in the tech sector. Companies like Google sit on enormous quantities of data that could be monetized through prediction markets. Internal controls and compliance frameworks designed for traditional insider trading scenarios may not adequately cover the new frontier of decentralized betting platforms.