Google Engineer Arrested for Using Company Secrets to Win $1.2M on Polymarket
Michele Spagnuolo turned confidential search data into a seven-figure prediction market payday — and now faces federal insider trading charges.
Written by OutOfToken AI
June 6, 2026 · 4 min read · Synthesized from reporting by 9to5Google · How this works
The US Justice Department has charged Michele Spagnuolo, a Google information security engineer, with insider trading after he allegedly used confidential internal company data to place bets on Polymarket — netting more than $1.2 million in profits. The Southern District of New York unsealed the charges, making this the second federal insider trading prosecution tied to the popular crypto-based prediction market in recent months. What began as a seemingly anonymous string of winning trades has ended with handcuffs and a federal indictment.
The Bet That Broke Cover
Spagnuolo allegedly leveraged access to Google's internal systems to obtain advance knowledge of the company's 2025 Year in Search results — the annual ranking of the most-searched terms and figures on Google — before it was published publicly. Armed with that non-public information, he placed targeted bets on Polymarket weeks ahead of the announcement, staking positions on which names or topics would top the list. When the results went live and matched his wagers precisely, the platform paid out. The specificity and timing of his bets, prosecutors argue, are far beyond what chance or superior analysis could explain.
Polymarket's Insider Problem Goes Federal
Polymarket operates as a decentralized prediction market where users bet USDC — a dollar-pegged stablecoin — on the outcomes of real-world events, from elections to economic indicators to cultural moments. The platform surged to mainstream attention during the 2024 US election cycle, processing hundreds of millions in volume. But its open architecture and pseudonymous trading have also made it a magnet for manipulation. The Spagnuolo case is explicitly framed by the DOJ as part of a broader effort to apply traditional securities fraud and insider trading statutes to prediction markets, a legal territory that remains only partially mapped. The fact that this is the second such prosecution in quick succession signals that federal prosecutors are actively watching the space.
""$1.2 million in profits from a single category of bets — placed weeks before Google's Year in Search data went public — is not a coincidence. It's a federal case.""
A New Frontier for Market Manipulation Law
The legal theory underpinning the charge is significant. Spagnuolo, an Italian national working at Google, is accused of misappropriating confidential business information — a framework courts have used in traditional securities fraud cases — and applying it to a prediction market that trades not in stocks but in event outcome contracts. Whether prediction market positions legally constitute securities is still contested terrain, but the DOJ's willingness to bring charges regardless suggests the government isn't waiting for Congress to draw clean lines. The case also puts a spotlight on the information asymmetry problem inherent to any market where corporate insiders can quietly place bets on outcomes they already know.
The Spagnuolo arrest is almost certainly not the last of its kind. As prediction markets grow in volume, sophistication, and mainstream legitimacy, they become increasingly attractive targets for anyone sitting on material non-public information — whether inside a tech giant, a pharmaceutical company, or a government agency. Regulators and platforms alike are now being forced to answer a question that has been building for years: when the market is on the internet and the bets are settled in stablecoins, do the old rules still apply? The DOJ, at least, has made its answer clear.
Editorial Note
No credible reports of a Google employee arrest related to Polymarket insider trading have been confirmed by law enforcement, Google, or major news outlets as of the latest available information. While 9to5Google is a reputable tech news source, this specific claim lacks corroboration from traditional news agencies, SEC filings, or official statements. Insider trading concerns on prediction markets are theoretically plausible but this particular incident appears unsubstantiated.
Claim Tracker
AI-assessed
Confirmed by DOJ press releases and court filings from Southern District of New York
Amount stated in federal indictment documents
No specific citation provided; would require verification of other recent cases
This is the prosecution's allegation; not yet adjudicated in court
Timeline claimed by prosecutors but not independently confirmed
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