Among the stock activity stories for Thursday, March 21, from AP Business News:
— Yahoo Inc. crept close to its 52-week high as an Oppenheimer analyst boosted his rating and price target for the Internet company — partly because of the value of its Asian assets.
— Supervalu Inc.'s stock rose as the supermarket operator announced that it completed the sale of five of its grocery chains.
— Shares of Acadia Pharmaceuticals Inc. rose after the company reported new data from a study of its drug pimavanserin, which is designed to treat psychosis in patients with Parkinson's disease.
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