UnitedHealth Group stock dived Friday following a report that said the Justice Department had launched a civil fraud investigation into the company’s Medicare billing practices. The DOJ probe aims to examine the healthcare company’s practices for documenting diagnoses that trigger extra payments to its Medicare Advantage plans,

UnitedHealth, still reeling from the murder of one of its top executives, is reportedly facing a Department of Justice investigation.

The S&P 500 pulled back from a record close on Thursday after Walmart disappointed Wall Street with its latest outlook. The Dow Jones Industrial Average was down 170 points, or 0.4%. The S&P 500 was down 0.

US stocks end lower, with S&P 500 off two straight records. Walmart's weaker outlook and tariff uncertainty hurt sentiment. Gold rises on uncertainty.