In a filing with the Securities and Exchange Commission, United Health Group said it has "full confidence" in its practices. It added that a court-appointed monitor found no wrongdoing after a decade-long probe into its Medicare Advantage business.

UnitedHealth Group is scheduled to report second-quarter results on Tuesday morning, capping a tumultuous first half of the year for the health insurance giant.

Shares of UnitedHealth Group fell sharply after the healthcare company said it was “complying with formal criminal and civil requests” from the Department of Justice.

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UnitedHealth shares tumbled Thursday after the health insurance giant confirmed that it’s the subject of a Department of Justice investigation. Monitor these key chart levels.

UNH braces for a 27% earnings drop in Q2 as soaring medical costs, margin pressure and investor jitters weigh on performance.

Stocks were mixed Thursday and the Dow Jones Industrial Average declined as UnitedHealth Group fell after saying it was “complying with formal criminal and civil requests” from the U.S. Department of Justice, and as IBM slumped following its second-quarter earnings.

Not all stocks in the index are doing well. If you're hunting for beaten-down bargains, these two laggards should top your watch list.