Google Engineer Polymarket Insider Trading Case Sparks Major Federal Charges

A Google software engineer is at the center of a striking Google engineer Polymarket insider trading case after prosecutors accused him of using confidential company data to rake in more than $1.2 million on the prediction market platform. The allegations mark the second significant criminal case tied to trades on Polymarket, raising fresh questions about how insider information can spill into the rapidly growing world of online betting markets.

The case has drawn attention not only for the sums involved but also for the unusual nature of the wager that allegedly netted such a large payout.

Who Is Michele Spagnulo?

The accused is Michele Spagnulo, a 36-year-old Italian citizen residing in Switzerland. According to a federal complaint unsealed in New York City, he faces three serious charges:

• One count of commodities fraud
• One count of wire fraud
• One count of money laundering

Prosecutors allege that Spagnulo placed a series of bets between October and December, relying on internal Google search data that tracked what users were searching for. This nonpublic information, they argue, gave him an enormous and unfair advantage over everyone else trading on the platform.

The Bet That Allegedly Made $1.2 Million

At the heart of the case is a single, remarkably well-timed wager. Operating under the username “AlphaRacoon,” Spagnulo reportedly bet that D4vd, a singer who has been accused of killing a teenage girl, would become Google’s most-searched person of the year in 2025.

What makes this bet so striking is how unlikely it appeared at the time. According to prosecutors, when Spagnulo placed the wager, the prediction market had assigned a near-zero probability to D4vd taking the top spot. Yet the bet paid off handsomely, earning him over $1.2 million.

The complaint lays out the crux of the alleged scheme in blunt terms, claiming that unlike the other people on the other side of his trades, Spagnulo already knew the likely outcome because he had tapped into Google’s confidential and commercially valuable internal data.

Allegations of Cover-Up

Prosecutors didn’t stop at the trades themselves. They also accused Spagnulo of taking deliberate steps to hide what he had done. According to the complaint, once his bets paid off, he attempted to obscure both the source and the ownership of his winnings in an effort to conceal his alleged use of nonpublic information.

These actions form the basis of the money laundering charge, suggesting that investigators believe the alleged wrongdoing extended beyond simply placing the bets. Spagnulo did not immediately respond to a request for comment.

Google and Polymarket Respond

Both companies connected to the case have spoken out. A Google spokesperson confirmed that the company is cooperating with law enforcement and emphasized that the conduct violated internal rules.

According to the spokesperson, the employee accessed marketing material through a tool available to all staff, but using that confidential information to place bets represented a serious breach of company policy. The employee has since been placed on leave.

Polymarket, for its part, highlighted its cooperation with authorities. A spokesperson noted that it is the only prediction platform so far whose cooperation has led to insider trading charges in the United States. The company added that it remains committed to maintaining fair and transparent markets while enforcing its rules and working closely with regulators and law enforcement.

Not the First Polymarket Case

This is not the first time Polymarket trades have triggered federal scrutiny. In April, federal authorities arrested and charged a U.S. Special Forces soldier accused of using classified information to place bets on the platform.

That case involved Gannon Ken Van Dyke, who allegedly used secret details about the raid that removed Venezuela’s Nicolás Maduro from office to inform his wagers. Van Dyke has pleaded not guilty to the federal charges against him.

Together, these two cases suggest that prediction markets, despite their novelty, are not immune from the same insider trading concerns that have long plagued traditional financial markets.

A Clear Message From Prosecutors

The case has prompted strong words from law enforcement. Jay Clayton, the U.S. attorney for the Southern District of New York, condemned what he described as greed-driven insider trading, warning that such behavior undermines the integrity of the markets.

Clayton stressed that the charges reinforce a long-standing principle: corporate insiders are not permitted to exploit confidential business information for personal profit. His remarks made clear that prosecutors view these prediction market cases as no different from traditional insider trading when nonpublic information is involved.

What This Means for Prediction Markets

The Google engineer Polymarket insider trading case underscores a growing reality. As platforms like Polymarket attract more users and larger sums of money, they are increasingly drawing the attention of regulators and prosecutors who view them through the same legal lens as conventional financial exchanges.

For users of these platforms, the message is unmistakable. The same rules that govern stocks and commodities can apply to bets placed on outcomes ranging from elections to pop culture trivia. Using confidential or classified information to gain an edge carries real legal risk.

As the case moves forward, it will likely serve as a closely watched test of how the legal system handles insider trading in the emerging world of prediction markets, and a warning to anyone tempted to turn privileged information into easy profit.