Super Micro Plunges as Prosecutor Reviews Accounting Claims (2)

Super Micro Computer Inc. fell the most in a month on a report that the US Justice Department is looking into an ex-employee’s claims that the server maker violated accounting rules just a few years after settling a bookkeeping case with a top financial regulator.

A prosecutor at the US attorney’s office in San Francisco recently reached out to people who may have relevant information about the allegations, according to a person familiar with the matter. The inquiry was reported earlier Thursday by the Wall Street Journal, which cited a case against Super Micro by former employee, Bob Luong.

Scrutiny ...