Stephen Hemsley never fully dropped the reins when he stepped down as UnitedHealth Group Inc.’s chief executive eight years ago. With the health giant in crisis, he’s taking back his old job – and ...

UnitedHealth Group's (UNH) stock appeared to be on an unstoppable upward trajectory, reaching an all-time high of $625 per ...

Few stocks have been as resilient as UnitedHealth Group ( UNH 8.14%). The company operates the largest health insurance business in the U.S. It runs the second biggest pharmacy benefits manager (PBM).