Take a look at some of Friday's midday movers:
Tesla Motors - Shares rose after U.S. safety regulators closed an investigation into the electric-car maker's Model S sedan fires. Separately, Tesla is fitting its Model S cars with an underbody shield to reduce the fire risk.
Blackberry - The maker of smartphones reversed lower after initial gains that came after it reported a narrower-than-expected fourth-quarter loss.
CBS Outdoor Americas - The outdoor advertiser rose in its market debut.
2U - The cloud-based educator gained in its market debut after pricing 9.2 million shares at $13 a piece.
Aerohive Networks - The cloud-based mobile-network provider declined in its market debut after pricing 7.5 million shares at $10.
Everyday Health - The website provider of health and wellness content fell in its first day of trading as a public company after pricing 7.2 million shares at $14.
SolarCity - The designer of energy systems rose after Raymond James upgraded the stock to outperform from market perform.
Alaska Air Group - The carrier rose after saying it would launch an online self-bag tagging option next month.
Amazon.com - The online retailer climbed after the Wall Street Journal reported it was considering a streaming video service that would be supported by ads, and not linked to its Prime membership.
General Motors - The auto maker gained after asking dealers to stop selling some 2013 and 2014 Chevy Cruze compacts but gave no reason why.
Idera Pharmaceuticals - Shares rose after the company said its experimental drug for skin disease was found safe in a mid-stage trial.
Red Hat - Shares fell after the maker of the linux operating system issued disappointing full-year guidance.
Gilead Sciences - Shares declined as new prescriptions for its Sovaldi hepatitis C drug fell from the previous week.
Cognizant Technology Solutions - The IT service outsourcing contractor rose after Morgan Stanley upgraded its shares to overweight from equal weight.
Autohome - The China-based operator of online information to car buyers rose after falling below its 50-day moving average.
Avago Technologies - Shares gained after Pacific Crest began coverage with an outperform rating.
Finish Line Shares rose it reported better-than-expected fourth-quarter earnings.
(Read More: See CNBC's Market Insider Blog)
—By CNBC's Rich Fisherman.
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