Take a look at some of Thursday's midday movers:

Netflix had a monster surge higher after posting better-than-expected earnings and adding 4 million customers.

F5 Networks rallied after posting better-than-expected quarterly earnings and guidance on stronger services revenue.

Swift Transportation traded at session highs on strong volume after reporting better-than-expected quarterly results on higher pricing and volumes.

Biggest loser: Apple tumbled more than 10 percent, but was still off its lows, after disappointing investors with both revenue and guidance.

Under Armour slid after the company announced that the executive in charge of the footwear division resigned.

Bed Bath & Beyond traded higher on an upgrade to "outperform" from "perform" at Oppenheimer. The company's price target was raised to $71 from $67 per share.

Research In Motion traded up to a 52-week high after a report that said China's Lenovo Group is assessing potential acquisition targets including, RIM.

McCormick moved lower after the maker of spices and condiments disappointed investors with a weaker-than-expected earnings report and guidance.

—By CNBC's Lori Spechler

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