Fresh off a 12% surge on the news that Warren Buffett's Berkshire Hathaway, as well as other leading investors, purchased the stock, UnitedHealth stock rose another 3% in premarket trade. Dayforce shares gained 21% on a Bloomberg report that Thomas Bravo was in talks to buy the software company.

UnitedHealth Group Incorporated (NYSE:UNH) is one of the Oversold Fundamentally Strong Stocks to Buy Now. On August 7, Mizuho analyst Ann Hynes kept her “Buy” rating, expecting long-term value despite reducing the price objective to $300.

UnitedHealth Group completed its $3.3 billion purchase of Baton Rouge-based Amedisys Thursday morning, more than two years after plans to join the nation's two largest home health and hospice care companies were first announced.

Meanwhile, the healthcare giant pays an $8.84 annual dividend, yielding about 3.38%. UnitedHealth has raised its dividend for 15 consecutive years, including a 5.2% increase last quarter. You're collecting a sizable yield backed by roughly $30 billion in annual operating cash flow, giving you steady income while you wait for the recovery.

The Dow Jones Industrial Average opened at its first all-time high of the year on Friday as shares of health care giant UnitedHealth Group soared.

UnitedHealth Group confirmed Thursday that its Medicare program is under investigation by the US Department of Justice and that it is working with the agency.

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.