Full Breakdown
Google Engineer Charged with Insider Trading on Prediction Market
5/28/2026, 10:49:00 AM
Alleged Insider Trading Scheme
Italian citizen Michele Spagnuolo, an information-security engineer at Google, faces federal charges of commodities fraud, wire fraud and money-laundering. Prosecutors allege he accessed Google’s internal tools to obtain non-public data on upcoming search trends and placed bets on the blockchain-based prediction market Polymarket. Between October and December of the previous year he wagered $2.7 million on Google-related outcomes, earning a profit of $1.2 million. The FBI linked the Polymarket account “Alfaracun” to Spagnuolo’s Italian ID, leading to his arrest and $2.25 million bail.
Background & Context
The case arrives as U.S. regulators intensify scrutiny of prediction markets, which allow betting on future events with cryptocurrency tokens. Critics warn such platforms can be exploited for insider trading, while some market participants argue broader information flow could improve forecast accuracy.
Timeline
- 2024 – Spagnuolo begins using Polymarket.
- Oct–Dec (previous year) – Places $2.7 million in bets on Google-related topics.
- Arrest – FBI and the U.S. Attorney’s Office detain Spagnuolo in Switzerland and transfer him to a New York federal court.
- Charges filed – Commodities fraud, wire fraud, money-laundering.
Financial Details
Court filings cite a profit of $1.2 million, described in one source as “over $1 million.” The total wagered amount was about $2.7 million, and bail was posted at $2.25 million.
Official Statements & Responses
Google confirmed Spagnuolo’s suspension and said the company is cooperating with investigators, emphasizing that using confidential data for personal betting breaches policy. Polymarket said it is cooperating and that its internal monitoring system identified the suspicious trades. The FBI, via Assistant Director James C. Barnacle, Jr., reiterated its commitment to pursuing employees who misuse employer data. The U.S. Attorney’s Office announced the charges as part of an effort to protect market integrity.
Criticism & Opposition
Arthur Hayes, chief investment officer of Maelstrom Fund, argued that insider trading on prediction markets could improve outcome accuracy, stating that “people will make better calls when information flows freely.” His view reflects a segment of the financial community that questions blanket prohibitions on insider information.
Conflicting Reports & Gaps
Sources differ on the exact profit: one reports $1.2 million, while another cites “over $1 million.” The precise arrest date and details of the internal Google tool remain undisclosed.
Verbatim Quotes
- “The FBI remains committed to hunting down fraudsters who betray their employer for personal financial gains,” — James C. Barnacle Jr., FBI Assistant Director
- “'Blockchain trading is transparent and traceable, and wrongdoers leave their mark,' he said.” — Polymarket spokesperson
- “Arthur Hayes, Chief Investment Officer at Maelstrom Fund, meanwhile, backed insider trading in prediction markets, saying people will make better calls when information flows freely.” — Arthur Hayes, Chief Investment Officer, Maelstrom Fund
- “market integrity infrastructure” flagged Spagnuolo’s suspicious trades. — Polymarket statement
What’s Next
Spagnuolo remains in federal custody pending trial. Google and Polymarket continue cooperating with investigators, and regulators are expected to review enforcement policies for prediction markets.
