Benzinga's Top Upgrades By: Benzinga via Benzinga April 05, 2016 at 10:07 AM EDT Analysts at KeyBanc upgraded Chemtura Corp (NYSE: CHMT) from Sector Weight to Overweight. Chemtura shares closed at $26.35 on ... Read More >> Related Stocks: Alaska Air Group Innospec Inc Intercept Pharmaceuticals Xylem