3D Systems - The printer maker fell after cutting its fourth-quarter estimate, hurt by falling demand. Fellow 3D-printer makers Stratasys, Exone and Voxeljet also fell.
Humana - The health insurer declined after swinging to a fourth-quarter loss.
Ralph Lauren - Shares of the designer-clothing company fell after it reported better-than-expected third-quarter earnings.
Estee Lauder - The beauty products company slid after it forecast current-quarter profit below street expectations.
United Continental Holdings - Shares of the airline and other carriers including American Airlines Group, Delta Air Lines and JetBlue Airways dropped as bad weather in the Northeast forced the cancellations of thousands of flights.
Tableau Software - The maker of data analysis software jumped after posting fourth-quarter results that beat estimates.
Cognizant Technology Solutions - The technology services provider fell after it forecast weaker-than-expected revenue growth for the current quarter.
GlaxoSmithKline - The company gained after it forecast sales growth of about 2 percent in 2014.
Deckers Outdoor - The comapny gained as B. Riley began coverage with a buy rating.
Arch Coal - Shares fell after Nomura cuts its price target to $3 a share and repeated a neutral rating.
Hain Celestial Group - The organic retailer fell after reporting weaker-than-expected second-quarter earnings.
(Read More: See CNBC's Market Insider Blog)
—By CNBC's Rich Fisherman.
Questions? Comments? Email us at email@example.com