ose Oct 7) US Key Research: ••• B. Riley initiates FARM (buy), CS initiates RNA (neut) and SRPT (op), Brean initiates WGBS (buy) ••• GS downgrades MDVN/ASNA & upgrades SAGE/WX (buy), Exane initiates ALV (op) •••• Citi initiates STT (buy) and BK/NTRS (neut), JMP upgrades MRVL, JPM downgrades MS • Piper ini