Take a look at some of Tuesday's midday movers:
Facebook fell below $30 a share for the first time after the social-networking giant said it was in discussion to buy the Oslo-based Opera Software. Analysts said competition from Google and others could push the price of any deal above $1 billion. Separately, investors piled into facebook options on their first day of trading, making it the busiest debut ever in the options market.
Gold stocks fell, including Goldcorp ,Barrick Gold , Newmont Mining and SPDR Gold Shares as gold fellanother $16.
Vail Resorts rose after a Stifel Nicolaus analyst raised his rating on the stock to "buy" from "hold" and set a $53 a share price target, saying its recent dip offers investors a chance to buy it up ahead of the next ski season.
Coal stocks moved higher, including Peabody Energy ,Consol Energy ,AlphaNatural Resources ,Walter Energy and Cliffs Natural Resources after Goldman Sachs raised its coverage view for the sector to "attractive" after a recent pullback in coal prices.
Chesapeake Energy jumped after the head of New York’s state pension fund urged shareholders to withhold votes to re-elect two members of the company’s board. On Friday, activist investor Carl Icahn disclosed he had taken a 7.6 percent stake in the company.
IBM and Caterpillar surged after reports the Chinese may unleash more stimulus.
Vertex dropped almost 20 percent, after the drug maker released corrected data involving its cystic fibrosis treatments that lowered the number of patients who showed improved lung function.
LeCroy jumped after defense equipment manufacturer Teledyne said it would buy the oscilloscope maker for $240 million in cash, or $14.30 a share.
Delta ,United and Southwest Airlines jumped as oil prices turned negative.
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