Among the stock activity stories for Friday, Feb. 3, from AP Business News:
— Shares of Gilead Sciences Inc. jumped after the biopharmaceutical company reported further progress of GS-7977, a newly-acquired hepatitis C treatment still in clinical testing.
— Shares of Peet's Coffee & Tea Inc. hit a 52-week high after a Baird analyst lifted his rating on the coffee company, saying he expects fast earnings growth starting later in 2012.
— Shares of Infinera Corp. jumped after the communications equipment maker reported fourth-quarter results that came in well ahead of Wall Street predictions.



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