Among the premarket stories for Tuesday, March 17, from AP Financial News:

NEW YORK (AP) ¿ A Jefferies & Co. analyst raised his rating on Costco Wholesale Corp. to "Buy" on Tuesday, citing above-average renewal rates in club membership and improving traffic trends.

NEW YORK (AP) ¿ Investors are overly anxious about shares of Data Domain Inc., a Morgan Keegan analyst said Tuesday, arguing a slowdown in orders last month is unlikely to represent a sustained trend.

NEW YORK (AP) ¿ Best Buy Co. wound up with a bigger chunk of now-defunct Circuit City Stores Inc.'s market than expected, said one analyst, and he sees bigger profits for the electronics retailer in the 2010 fiscal year.

NEW YORK (AP) ¿ A possible stabilization in sales, new business from Staples Inc. and aggressive cost cuts mean United Stationers Inc., an office products wholesaler, is well-positioned to see share price gains, said one analyst Tuesday.
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