Google security engineer charged with $1.2 M insider trading on

A Google information security engineer has been indicted on charges of commodities fraud, wire fraud and money laundering for allegedly exploiting confidential search‑trend data to place winning bets on the blockchain‑based prediction market Polymarket [1]. Prosecutors say the scheme generated more than $1.2 million in profits over a three‑month period.

Key takeaways

• The defendant, Michele Spagnuolo, was charged in the Southern District of New York on May 27 [1].
• He allegedly used internal Google search‑trend data that feeds the company’s “Year in Search” report to bet on which individuals would top Google’s 2025 search rankings [1].
• Between October and December 2025 he is accused of risking over $2.7 million on Polymarket, netting roughly $1.2 million in profit [1].
• The case marks the first federal insider‑trading prosecution targeting a blockchain‑based prediction platform [1].
• Polymarket has previously faced regulatory scrutiny, prompting it to tighten market‑integrity rules after an earlier insider‑trading incident involving a U.S. Army soldier [1].

Insider trading scheme tied to Google search data

Federal prosecutors allege that Spagnuolo, as a Google security engineer, had privileged access to confidential search‑trend analytics—information that underpins Google’s annual “Year in Search” summary of the most‑searched people, topics and events. Using this non‑public data, he placed bets on Polymarket, a platform where users wager real money on the outcomes of future events. The specific markets involved predictions about which individuals would rank highest in Google’s 2025 internal search data, including less‑prominent names such as indie musician “d4vd” [1].

The alleged activity spanned the final quarter of 2025. Prosecutors say Spagnuolo risked more than $2.7 million on these bets, ultimately earning over $1.2 million in profit. He was arrested in New York and released on a $2.25 million bond [1].

Regulatory context and implications for prediction markets

Polymarket’s involvement in this case follows a prior insider‑trading investigation involving a U.S. Army soldier, which led the platform to adopt stricter market‑integrity rules and enforcement mechanisms. The Commodity Futures Trading Commission (CFTC) has also filed a related complaint, indicating both criminal prosecutors and civil regulators are scrutinizing the space [1]. This is the first known federal prosecution targeting insider trading on a blockchain‑based prediction market.

Why it matters

The case highlights the vulnerability of prediction markets that rely on data controlled by a single entity. When insiders can access non‑public information, they can profit at the expense of participants who only have publicly available data, raising concerns about fairness and market integrity. The ongoing criminal case in the Southern District of New York could set precedent for how authorities treat insider trading on decentralized platforms, and it may prompt further regulatory actions against similar markets. [1]