Key Research: Citi downgrades AKS and MASI (sell) & initiates COH/RKT (buy's) & JEC (neut), Piper initiates CRIS (ow) Key Research: DB downgrades ORLY/AMRS/MPEL & upgrades COP, Baird downgrades XCO/SLGN/ORLY/TLEO & upgrades ALXN/SEE Key Research: GS adds ATVI to Conviction Buy list & resumes SYMC (neut) & upg