Afternoon Movers; Markets Moved Higher

ZOLL Medical Company ZOLL +28.7% after authorities reaffirmed coverage policies for one of ZOLL's products

SonoSite SONO +27.1% after agreeing to be acquired by Fujifilm for $995 million

Novellus Systems NVLS +16.3% after merger announcement with Lam Research Corp

InterMune ITMN -30.3% on heavy volume

athenahealth NBG -15.5% on poor 2012 guidance

Nevsun Resources NSU -11.4% on low volume