Take a look at some of Monday's midday movers:
HCA fell after the company said the Department of Justice is reviewing its billing practices and heart procedures. It also warned that it was facing a potentially negative article in the New York Times.
Other hospital stocks lost ground as well, including Health Management , Tenet and Community Health .
Best Buy moved higher after founder Richard Shulze said he wanted to take the company privatefor between $24 and $26 a share. But the stock was well off its highs on concerns that the deal would not go through.
Monsanto rose after Piper Jaffray increased its price target to $113 from $100. It said it believes tight seed supply will push up pricing.
Wal-Mart traded in a tight range as Stifel Nicolaus upgraded the retail giant to a "buy" and set a price target of $83 a share. It said its sees the company as election and fiscal cliff resistant.
Cognizant soared after the IT-services firm’s quarterly profit and outlook exceeded Wall Street expectations.
BE Aerospace lost ground after Cowen downgraded the company to "neutral," saying consensus 2013 estimates are liable to fall.
Pluristem Therapeutics moved higher on a positive stem cell treatment update.
Tesco fell after the energy services company reported weaker-than-expected second-quarter earnings.
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