Berenberg Upgrades AstraZeneca To Buy By: Benzinga via Benzinga July 02, 2015 at 08:51 AM EDT Berenberg upgraded AstraZeneca plc (ADR) (NYSE: AZN) from Hold to Buy. AstraZeneca shares have dropped 14.54 percent over the past ... Read More >> Related Stocks: Astrazeneca Plc ADR