(buys) Key Research: Citi downgrades ZMH (sell), Barclays downgrades GR/EW & upgrades NOVA Key Research: GS initiates VIP (sell), Mizuho downgrades STP/TSL & initiates INAP (buy), Ticonderoga initiates FEIC (buy) Key Research: UBS resumes Retailers & initiates PPG/NLY (neutrals) & AGNC (buy), BNP upgrad