upgrades MMM, Raja initiates ABMD (mp) & upgrades CCOI, Piper cuts MDRX Key Research: Baird upgrades FAST, Mizuho initiates FRX (buy), JPM upgrades MRO & downgrades CSCO Key Research: Wells initiates PVTB (mp), BB&T initiates WWW (hold), Steme Agree upgrades OZRK (buy) Key Research: Key upgrades RYL