Among the stock activity stories for Wednesday, Dec. 9, from AP Financial News:

NEW YORK (AP) ¿ Shares of Sprint Nextel Corp. got a boost after a Citi Investment Research analyst upgraded the telecommunications company and said a combination with T-Mobile USA in the next 12 months is more likely than not.

NEW YORK (AP) ¿ Shares of DeVry Inc. climbed further and an analyst raised his estimates for the for-profit education provider, a day after it reported better-than-expected fall enrollment at its DeVry University unit.

NEW YORK (AP) ¿ Shares of Westport Innovations Inc. tumbled after the company priced an offering of 4.8 million shares at $10.50 per share, a 10 percent discount from Tuesday's close.

NEW YORK (AP) ¿ Shares of Accuray Inc. rose after a UBS analyst upgraded the maker of medical radiation equipment, citing stable orders of the company's CyberKnife system.

NEW YORK (AP) ¿ Shares of Bridgepoint Education Inc. rose after the online education company announced three-year cohort default rates for its schools that were not as bad as investors feared.

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