Benzinga's Top Upgrades By: Benzinga via Benzinga June 02, 2016 at 09:00 AM EDT Citigroup upgraded Oasis Petroleum Inc. (NYSE: OAS) from Neutral to Buy. The target price for Oasis Petroleum has been raised from ... Read More >> Related Stocks: Enersys Inc Equity Residential Oasis Petroleum Inc Ophthotech Corp Pure Storage Inc Sally Beauty Holdings