Rite Aid - The drugstore chain gained after it raised its full-year earnings forecast.
Dunkin' Brands Group - The operator of quick-service eateries fell after it issued weak earnings and sales guidance for fiscal 2015.
GlaxoSmithKline - The drug company rose after reporting positive results for its experimental shingles vaccine in a late-stage study. Agenus also rose. It is Glaxo's partner in the drug.
Pfizer - The drug company advanced on positive word for its nerve-pain treatment in a phase 3 trial.
Alcatel-Lucent - The French network-equipment maker rose after a German magazine reported it was in merger talks with Finnish rival Nokia Oyj.
Pantry - The convenience store operator gained after Canadian rival Alimentation Couche-Tard said it would acquire it for about $861 million.
ConAgra Foods - The food company declined after posting weaker-than-expected quarterly results.
Winnebago Industries - The maker of motor homes dropped after it reported a weaker-than-expected first-quarter profit.
(See CNBC's Market Insider Blog)
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