DOJ and CFTC charge Google engineer in second coordinated prediction markets insider trading case
The Department of Justice and Commodity Futures Trading Commission filed parallel insider-trading enforcement actions on May 27, 2026, charging a Google engineer with using non-public search-trend data to trade on prediction market event contracts. The dual enforcement marks the second coordinated criminal-civil action by the agencies targeting manipulation in the sector. The case follows separate charges against a U.S. soldier accused of trading Polymarket contracts using classified information. Jay Clayton, U.S. Attorney for the Southern District of New York, cited concerns about fraud and manipulation in prediction markets. The soldier case and the Google engineer matter together signal that federal authorities will apply traditional insider-trading theories to event-contract markets.
Polymarket and Kalshi must now build insider-trading compliance programs that can detect confidential data exploits by both government and corporate insiders. Any platform that fails to surveil for these abuses risks co-defendant exposure in future DOJ-CFTC parallel actions.
Extends a running DOJ-CFTC insider-trading crackdown that has already produced the Van Dyke prosecution against a U.S. soldier and the Spagnuolo case against a Google engineer.