Shares of UnitedHealth Group tumbled 16% in intraday trading Thursday, leading S&P 500 decliners, on a report that the U.S.

UnitedHealth Group is calling a former CEO back to lead the company, and sweetening the deal by adding a hefty $60 million equity award to a $1 million base salary. UnitedHealth Group announced on ...

UnitedHealthcare is owned by UnitedHealth Group. (Photo by PATRICK T. FALLON/AFP via Getty Images) The Justice Department’s healthcare-fraud unit is leading the probe, the Journal reported.

Shares of healthcare providers tumbled Thursday on a report UnitedHealth Group is being investigated by U.S. officials over possible fraud.

UnitedHealth Group’s investors have profited from its sky-high coverage denial rates. Now, as the company faces mounting ...