UnitedHealth Group (NYSE: UNH), by far the health insurance stock that's gotten most of the market's attention over the past few trading sessions, had a good Monday on the exchange. Its shares added nearly 2% in value that trading session on news of an analyst's price target raise. That bump was high enough to top the S 500's (SNPINDEX: ^GSPC) flatline performance.

UnitedHealth was a star stock late last week, when it was revealed that Warren Buffett's Berkshire Hathaway had taken a $1.6 billion stake in the company's equity. On Monday, lingering positive sentiment on UnitedHealth was boosted by that price target bump.

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Source Fool.com