Benzinga's Top Upgrades, Downgrades For December 12, 2017 By: Benzinga via Benzinga December 12, 2017 at 09:17 AM EST Top Upgrades Stifel Nicolaus upgraded Navistar International Corp (NYSE: NAV) from Hold to Buy. Navistar shares rose 0.43 ... Read More >> Related Stocks: Abbott Laboratories Actelis Networks Inc Activision Blizzard Adobe Systems Bluegreen Vacations Corp Casey's General Stor Columbia Sprtswr ConAgra Foods D.R.Horton Freeport-McMoRan Genl Dynamics Medtronic Mohawk Industries Navistar International Corp Northrop Grumman Pattern Energy Cl A Raytheon Co SC Pharmaceuticals Inc Sailpoint Technologies Holdings Inc Spark Therap Stitch Fix Inc Tenet Healthcare Transdigm Group Inc U.S. Bancorp Verizon Communications Waste Connections Inc Zayo Group Holdings Inc