Natixis Upgrades Novartis To Buy By: Benzinga via Benzinga March 04, 2015 at 09:18 AM EST Analysts at Natixis upgraded Novartis AG (NYSE: NVS) from Neutral to Buy. Novartis shares have gained 19.21% over the past 52 weeks, ... Read More >> Related Stocks: Novartis Ag ADR