Year to date, the stock has fallen by nearly 45%, which is by no means normal for the healthcare stock. In fact, this is the worst it has performed since the Great Recession, when it tumbled by more than 54% in 2008.

Shares of health insurance company UnitedHealth (NYSE:UNH) fell 3% in the afternoon session after investors took some profits off the table as markets awaited signals on future monetary policy from the Federal Reserve's Jackson Hole symposium later in the week.

The sell-off phase in Medicaid provider UnitedHealth (UNH) is over. News that Berkshire Hathaway (BRK) took a position in UNH stock at anywhere from over $600 to as low as around $250 ended the stock decline.

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UnitedHealth Group ($UNH) stock rallied about 12% on Friday, as Warren Buffett’s Berkshire Hathaway (BRK.A) (BRK.B) and other hedge funds,

UnitedHealth Group (NYSE: UNH) is a top health care stock with recent turbulence in earnings guidance, rising costs, and hedge fund activity.

UnitedHealth Group Inc. (NYSE:UNH) shares climbed Friday after high-profile investors Michael Burry and Warren Buffett took positions in the insurance giant, offering some relief to a stock that has tumbled about 41% year-to-date.

CVS Health (CVS) and UnitedHealth Group (UNH), two of the largest players in the healthcare sector, recently reported their Q2 earnings, showing contrasting performances. While CVS delivered strong revenue growth and raised its full-year guidance,