The health care giant's shares are down more than 50% in the last month. That's hurting the powerful U.S. stock-market index.

UnitedHealth shares dropped 55%, facing lawsuits and claim rejection issues. Management changes raise questions on recovery.

The Department of Justice has launched an investigation of UnitedHealth Group for possible criminal Medicare fraud, according ...

Things continue to spiral for the embattled UnitedHealth. UnitedHealth Group, the largest health insurer in the United States ...

Stephen Hemsley hasn’ t been CEO at UnitedHealth Group in nearly a decade yet he’ s never really left. Since that day, the company’ s stock has fallen from $610 a share to $308 on Tuesday, an ...

UnitedHealth Group slid again Thursday as the market processed a Wall Street Journal report that the U.S. Department of Justice has launched a criminal fraud investigation of Medicare billing ...

UnitedHealth Group, one of America’s biggest corporations and a member of the exclusive Dow Jones Industrial Average, is ...

Former UnitedHealth Group chief executive officer Stephen Hemsley to replace Andrew Witty. Here's what we know.