Google engineer charged with insider trading after making $1.2M on Polymarket

At a glance:

• Google software engineer Michele Spagnuolo allegedly earned more than $1.2 million on Polymarket using confidential Google Search data
• The DOJ says he risked $2.7 million on bets tied to Google’s 2025 “Year in Search” campaign
• Polymarket cooperated with the U.S. Attorney’s Office and the CFTC, becoming the first prediction‑market platform linked to insider‑trading charges in the United States

What happened

The U.S. Department of Justice announced criminal charges against Michele Spagnuolo, a Google software engineer of more than a decade, accusing him of insider trading on the blockchain‑based prediction market Polymarket. According to the complaint, Spagnuolo operated under the pseudonym “AlphaRaccoon” and placed wagers that netted him over $1.2 million in profits. The alleged wrongdoing centers on his use of internal, non‑public Google Search data related to the upcoming 2025 “Year in Search” marketing campaign, which highlights the most‑searched terms and celebrities of the year.

Jay Clayton, United States Attorney for the Southern District of New York, said in a press release that Spagnuolo “violated the duties he owed to his employer and used Google’s confidential business information to make more than $1.2 million in trading profits on Polymarket.” The complaint further states that Spagnuolo risked more than $2.7 million on bets tied to the identities of the most‑searched celebrities, a data set that is normally restricted to Google employees.

Legal and regulatory context

Insider trading is illegal on any financial platform, including emerging prediction markets such as Polymarket, Kalshi, and others that let users wager on a wide array of outcomes. The Justice Department has recently pursued similar cases, most notably charging a U.S. Army soldier for earning $400,000 on Polymarket by exploiting classified knowledge of a military operation to capture Venezuelan President Nicolás Maduro.

Polymarket’s spokesperson told TechCrunch that the platform “worked closely with the U.S. Attorney’s Office for the Southern District of New York and the CFTC, and is the only prediction platform to date whose cooperation has led to insider trading charges in the United States.” The company emphasized that blockchain trading leaves a transparent, traceable footprint, which helped regulators identify the illicit activity.

Google’s response and internal actions

Google confirmed it is cooperating with law‑enforcement agencies and issued an internal statement that the employee accessed marketing material through a tool available to all staff. The company characterized the misuse of confidential data as “a serious breach of our policies,” noting that Spagnuolo has been placed on leave pending further disciplinary measures.

The incident raises broader questions about data governance within large tech firms. While Google provides employees with broad access to internal analytics for product development, the case illustrates how that same access can be weaponized for personal financial gain. Industry observers suggest tighter segmentation of sensitive data and more robust monitoring of employee activity on external platforms could mitigate future risks.

What this means for prediction markets

The charges signal a tightening regulatory posture toward prediction markets, especially those operating on public blockchains. The Commodity Futures Trading Commission (CFTC) has already signaled intent to bring more crypto‑related platforms under its jurisdiction, and the collaboration with the DOJ in this case may set a precedent for future enforcement actions.

For users of Polymarket and similar services, the takeaway is clear: even though blockchain transactions are public, the platforms themselves are not immune to traditional securities law. Participants should expect stricter KYC/AML procedures and more vigilant monitoring of market‑moving information that could be deemed material non‑public information.

Looking ahead

The case is still pending, and Spagnuolo faces potential criminal penalties, including fines and imprisonment, if convicted. Google’s handling of the internal breach will likely be scrutinized by shareholders and regulators alike, especially as the company continues to monetize search‑related data through products like “Year in Search.” Meanwhile, Polymarket’s cooperation with authorities may bolster its credibility with regulators, but it also underscores the delicate balance prediction‑market platforms must strike between openness and compliance.

Stakeholders across the tech, finance, and legal sectors will be watching how this prosecution influences future policy on data access, employee conduct, and the evolving landscape of decentralized prediction markets.