Take a look at some of Thursday's midday movers:
Facebook moved higher following comments from billionaire hedge fund investor Leon Cooperman saying that investors might be underestimating "the mobility opportunity that exists in Facebook." Cooperman also suggested that the social media company deserved a market cap more like Google's. Facebook's market cap currently about $48 billion versus Google's market cap at $237 billion.
Health Care REIT eked out a small gain in its first day of trading. The real estate investent trust priced 20 million shares at $73.50 per share.
Quintiles Transnational Holdings also debuted today, selling 23.7 million shares at $40 per share.
Precision Castparts hit a record high following the company's fourth-quarter earnings report. The company that makes components for aerospace and other industrial companies reported a 23 percent increase in earnings at $2.82 per share versus an expectations for $2.75 a share. Sales came in below analysts' expectations at $2.44 billion.
AMC Networks hit a 52-week high before backing off after the company posted earnings that beat consensus estimates on both the top and bottom lines. The "Walking Dead" series helped boost the bottom line for AMC.
Blackberry rallied almost 4 percent. "Blackberry Live," the mobile communications company annual showcase formerly known as "Blackberry World," will be held next week in Orlando, Florida.
(Read More: See CNBC's Market Insider Blog)
—By CNBC's Lori Spechler
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