Goldman Sachs Upgrades Quest, LabCorp, Downgrades Sigma-Aldrich | GenomeWeb

NEW YORK (GenomeWeb News) – Investment bank Goldman Sachs today upgraded shares of Quest Diagnostics and Laboratory Corporation of America, but downgraded Sigma-Aldrich.

In a research note, analyst Isaac Ro upgraded Quest to Buy from Neutral and LabCorp to Neutral from Sell. He downgraded Sigma-Aldrich to Sell from Neutral.

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