UnitedHealth Group–The health insurer earned $1.41 per share for the fourth quarter, a penny above estimates, as the company saw an increase in enrollments.
Hewlett-Packard–Bank of America/Merrill Lynch upgraded HP shares to "buy" from "neutral", saying the company's 5-year turnaround plan will continue to yield benefits.
Kroger–Credit Suisse downgraded Kroger to "neutral" from "outperform", because of general caution regarding the supermarket sector.
J.C. Penney—The retailer announced it would close 33 stores and eliminate 2,000 jobs. It expects to save about $65 million per year.
Yahoo—Chief operating officer Henrique de Castro is leaving the company. De Castro had only been on the job for a year and his severance package could be worth an estimated $42 million.
Generac Holdings–Oppenheimer downgraded the home generator maker to "perform" from "outperform", as shares approach the firm's price target.
SolarCity–Deutsche Bank began coverage on the solar equipment maker with a "buy" rating, saying the company's installed base will double in the next two years.
AOL–The struggling news portal is giving up control of local news website Patch, contributing it to a joint venture with investment firm Hale Global. AOL retains a minority interest but will not be impacted by any operational losses Patch might incur.
CSX–The rail operator reported quarterly profit of $0.42 per share, falling a penny short of estimates. The company's results were impacted by weaker coal shipments.
American Airlines Group–American is ending daily non-stop service from Reagan National Airport in Washington, DC to 17 cities. The halt is part of the deal the airline struck with the government for approval of the merger between AMR and U.S. Airways.
United Continental–United will furlough about 685 flight attendants, after failing to attract enough workers for voluntary furloughs and job-sharing.
CEC Entertainment–The parent of restaurant chain Chuck E. Cheese, will be bought by private equity firm Apollo Global for $54 per share.
Microsoft–Microsoft is considering Ericsson chief executive Hans Vestberg as a possible successor to outgoing CEO Steve Ballmer, according to a Bloomberg report.
Amazon.com–Amazon workers in Delaware voted against joining the International Association of Machinists and Aerospace Workers by a 21-6 margin.
—By CNBC's Peter Schacknow
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