The probe is at an early stage and follows a critical report by an activist short-selling firm.

The U.S. Department of Justice is investigating Super Micro Computer, the Wall Street Journal reported on Thursday, nearly a month after short-seller Hindenburg Research alleged "accounting manipulation" at the AI server maker.

Super Micro’s stock took a deep dive Thursday, after the Wall Street Journal reported that the server maker and artificial-intelligence play was being investigated by the U.S. Justice Department.

Super Micro Computer's stock price fell sharply after the Wall Street Journal reported the company faces a federal investigation.

Super Micro Computer Inc. fell the most in a month after the Wall Street Journal reported the US Justice Department is investigating the server maker in light of a short seller report that questioned the company’s accounting practices.