Top Analyst Upgrades and Downgrades: Celgene, Ciena, Goldman Sachs, MannKind, Newfield, Tetraphase, Walgreens, Yingli and Many More
Wednesday’s top analyst upgrades, downgrades and initiations include Celgene, Ciena, Goldman Sachs, MannKind, Newfield Exploration, Tetraphase Pharmaceuticals, Walgreens Boots Alliance and Yingli Green Energy.