Benzinga's Top Upgrades, Downgrades For May 18, 2018 By: Benzinga via Benzinga May 18, 2018 at 09:23 AM EDT Top Upgrades Piper Jaffray upgraded Mellanox Technologies, Ltd. (NASDAQ: MLNX) from Neutral to Overweight. Mellanox shares ... Read More >> Related Stocks: Anadarko Petroleum Baidu.com SP ADR Barnes Group Carrizo Oil & Gas Copart Inc Coupa Software Inc Eaton Corp Plc Graphic Packaging Holding Company Hilton Grand Vacations Inc Mellanox Technologies Mueller Industries Noble Energy Nvent Electric Plc Planet Fitness Sealed Air Skyworks Solutions Southern MO Bancorp Spotify Technology S.A. Telecom Italia S.P.A. Welltower Inc Yelp Inc