A Google security engineer was arrested in New York on May 27, 2026, accused of using confidential company data to win over $1.2 million on the prediction market Polymarket, marking the second major insider-trading case tied to the platform in less than a year.
Who Was Charged, and How Did It Happen?
Michele Spagnuolo, a 36-year-old Italian citizen and staff information security engineer at Google since 2014, was charged with commodities fraud, wire fraud, and money laundering after allegedly placing bets on Polymarket between October and December 2025 using internal Google search data. According to the federal complaint, Spagnuolo—operating under the username AlphaRaccoon—correctly predicted that singer D4vd would be Google’s most-searched person of the year, a bet that netted him approximately $1.2 million. The complaint, unsealed in New York’s Southern District, alleges he had access to Google’s confidential “Year in Search” data through an internal tool available to employees.
Prosecutors emphasized that Spagnuolo’s trades were not just lucky guesses. The complaint states: “Unlike the counterparties to his trades, Spagnuolo knew the outcome of these wagers before the trading public did because he had accessed Google’s confidential, commercially valuable internal data.” His bets extended beyond D4vd to other search-related markets, including whether Zohran Mamdani would rank in the top five most-searched people and whether Squid Game would be the year’s most-searched TV show.
Spagnuolo was arrested Wednesday morning and appeared before a federal magistrate judge, where he was released on a $2.25 million bond. He has not entered a plea. According to CNBC, the case was first reported by ABC News, while WIRED noted this is the second known arrest in the U.S. for illicit activity on prediction markets, following the April arrest of a U.S. Special Forces soldier accused of using classified information to bet on the removal of Nicolás Maduro.
The Timeline: How Far Back Does This Go?
The scheme began as early as October 2025, when Spagnuolo allegedly started placing bets using Google’s internal search data. By December 4, 2025—the date Google publicly announced its “Year in Search” results—his AlphaRaccoon account had already profited handsomely. According to the complaint, Polymarket users had flagged the account for suspicious activity months earlier, but no action was taken until now.
Google’s response was swift. The company confirmed it had placed Spagnuolo on administrative leave and was cooperating with law enforcement. In a statement to WIRED, Google spokesperson Jaclyn Vazquez said: “The employee accessed our marketing material using a tool available to all employees, but using such confidential information to place bets is a serious breach of our policies. We’ve placed the employee on leave and will take the appropriate action.”
Google’s internal tool—designed for employees to access marketing data—was the gateway to Spagnuolo’s alleged insider advantage. The complaint details how he exploited this access to predict search trends with near-certainty, turning a profit while the broader market remained in the dark.
Why This Case Matters: Polymarket’s Legal and Market Risks
This arrest is not just another white-collar case—it’s a warning shot for prediction markets, which have long operated in a legal gray area. Polymarket, in particular, has faced scrutiny from lawmakers and regulators. Last week, House Oversight Committee Chairman James Comer launched an investigation into insider trading on prediction platforms, demanding information from Polymarket about its customer vetting processes. The platform operates two versions: a U.S.-compliant one and a larger offshore version where traders use cryptocurrency.
Polymarket’s spokesperson, Connor Brandi, told WIRED that the platform had cooperated with prosecutors and was the first prediction market to lead to insider-trading charges in the U.S. The company’s statement underscored its commitment to “accurate, fair, and transparent markets,” but the case raises questions about how effectively such platforms can police insider activity.
For Google, the fallout extends beyond legal exposure. The case highlights the risks of employees accessing sensitive data—even if the tool itself is not inherently malicious. Google’s statement acknowledges the breach but stops short of detailing disciplinary actions, leaving open questions about whether this will lead to broader policy changes or internal audits.
The Broader Implications: Insider Trading in the Digital Age
Spagnuolo’s case is part of a growing trend: the use of insider information in digital markets. Unlike traditional stock insider trading, where whistleblowers and regulators have long-standing mechanisms to detect abuses, prediction markets are a relatively new frontier. The lack of clear regulatory oversight has made them a magnet for those willing to exploit confidential data.
Consider the parallels to the OpenAI case earlier this year, where an employee was fired for using insider information on a prediction platform. That case, however, did not result in criminal charges—until now. The Southern District of New York, known for its aggressive prosecution of financial crimes, has made it clear that such activities will not be tolerated. U.S. Attorney Jay Clayton called the behavior “greed-driven” and reaffirmed that “corporate insiders cannot use confidential business information to turn a profit in our markets.”
For traders, the message is clear: prediction markets are not immune to insider-trading laws. The Commodity Futures Trading Commission (CFTC) is also involved, signaling that regulators are treating these platforms with the same scrutiny as traditional financial markets. The question now is whether this case will prompt Congress to tighten oversight—or if prediction markets will continue to operate in a regulatory limbo.
What Happens Next?
Spagnuolo’s case is still in its early stages. He faces up to 20 years in prison for wire fraud and 10 years for commodities fraud, with additional penalties for money laundering. His bond hearing suggests prosecutors believe he poses a flight risk, though his lack of a plea leaves his defense strategy unclear.
Google’s internal investigation will likely expand beyond Spagnuolo, particularly given the tool’s accessibility. If other employees exploited similar data, the company could face additional scrutiny—or even shareholder lawsuits. Meanwhile, Polymarket’s cooperation with regulators will be closely watched. If the platform fails to demonstrate stronger safeguards, lawmakers may push for stricter controls, potentially stifling its growth.
For the broader market, this case serves as a cautionary tale. Prediction markets are no longer a niche experiment—they’re a multi-million-dollar industry with real-world consequences. As regulators and lawmakers take notice, traders and companies alike would be wise to assume that the days of unchecked insider activity are over.
One thing is certain: this won’t be the last insider-trading case tied to digital markets. The question is whether the next one will involve a tech giant, a government official, or someone else entirely.
