July 30 (Bloomberg) -- Wyeth was cut to ``sell'' from ``hold'' at Citigroup Inc. Wyeth shares dropped after the company's experimental Alzheimer's treatment was linked to a brain-swelling side effect in a test. Included are analysts' calls for Merrill Lynch & Co., Molson Coors Brewing Co., Sepracor Inc., Embarq Corp., Viacom Inc., Cemex SAB, CVS Caremark Corp., Walgreen Co., DreamWorks Animation SKG Inc., Gaylord Entertainment Co., Affymetrix Inc. and Buffalo Wild Wings Inc.

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