Take a look at some of Monday's midday movers:
Aaron's - The consumer goods retailer rose after Stifel Nicolaus upgraded the stock to buy from hold.
Biogen Idec - The biotechnology company and others including Regeneron Pharmaceuticals, Celgene and Alexion Pharmaceuticals all rebounded after their recent battering.
China's iShares Large-Cap - The fund rose along with Chinese Internet companies Baidu, Yoku Todou and Sina.
Core Laboratories - The Amsterdam-based provider of reservoir management services to the oil and gas industry fell after it lowered its second-quarter earnings and revenue below street views.
Eli Lilly - The drug maker moved a bit lower. It said its type 2 diabetes drug was more effective than Sanofi's approved drug in cutting blood sugar levels in patients in a late-stage trials.
Gogo - The provider of in-flight wireless services rose after posting better-than-expected quarterly revenue.
Hain Celestial Group - The food producer and competitors including Boulder Brands, B&G Foods and Annie's all gained on news Hillshire Brands was buying Pinnacle Foods for $6.6 billion, or $36.02 a share.
Priceline Group - The online travel agency and other Internet companies including Amazon.com, Netflix, Twitter and Facebook all gained as part of a bounce back.
SolarCity - The solar company and others including First Solar and SunEdison gained as traders paid attention to potential REIT law changes that could be a boon for the industry.
Tesaro - The oncology-focused biopharmaceutical company rose after BMO Capital raised its price target on the company. It also said its treatment for chemotherapy-induced nausea met its main goal in a third late-stage trial.
3D Systems - The printing company rose after announcing a partnership with ScanSource.
Twenty-First Century Fox - The media and entertainment company advanced after the company disclosed it held talks about combining the Sky-branded European satellite entities in Britain, Germany and Italy.
Verifone Systems - The provider of point of sale payment solutions rose after Forbes reported Apple would use its system in upgrading its stores.
Whirlpool - The appliance company rose after saying it would reaffirm fiscal 2014 guidance while delivering a presentation at a conference on Wednesday.
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—By CNBC's Rich Fisherman.
Questions? Comments? Email us at marketinsider@cnbc.com