Take a look at some of Monday's midday movers:
Best Buy rose on news the company and founder Richard Schulze have reached a dealfor due diligence.
Navistar gained after Chairman and CEO Daniel Ustian stepped down, to be replaced by interim CEO Lewis Campbell, the former Chairman, President and CEO of Textron.
Kenexa soared after IBM agreed to buy the company for $1.3 billion, or $46 a share.
Hudson CityBancorp moved higher after M&T Bank said it would buy the bankfor $3.7 billion.
Idenix moved lower after the FDA placed its Hepatitis-C treatment on clinical hold.
ImmunoGen moved up on positive results from a late-stage trial of its breast cancer treatment.
U.S. refiners Valero, Marathon Petroleum and Phillips all rose following news of a lethal refinery blast in Venezuela. All 3 are poised to provide the country with needed fuel products.
Fisher Communications rose after the local-media company began a regular quarterly dividend of 15 cents a share and declared a special $10-cash dividend.
Donaldson Co’s gained ground after the industrial-filter maker reported a 7.9 percent jump in earnings on higher revenue.
TreeHouse rose after Citi upgraded the private-label food company to "buy" from "neutral." TreeHouse is set to launch its line of single-server cups as Green Mountain’s patents on K-Cups expire on September 16.
- Missed It?: Track Morning Movers Here
—By CNBC's Rich Fisherman.
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