EDMC & downgrades CPLA/STRA, BofA initiates CLGX (buy) Key Research: Merriman upgrades KVHI (buy), Jefferies initiates SON (hold), Bofa downgrades HSBA.LN & initiates TMS (buy) Key Research: BMO downgrades LFT & DEER, CS resumes CYH & THC (op's), GS downgrades Russian Oil sector Key Research: GS upgrad