The timing of the reported investigation follows closely on the heels of a recently filed DOJ lawsuit that alleges a ...

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.

CEO Andrew Witty this week has sent shockwaves through an already tumultuous healthcare sector. Investors in UNH stock have ...

Even UnitedHealth will struggle to overcome parasitic medical costs that Warren Buffett once called a tapeworm eating away at ...