na Renaissance, Memorial Resource Development (MRD) files $700M IPO through Citi IPO's (lock-up expires): Antero Resources (AR), MacroGenics (MGNX) Western Refining (WNRL) US Key Research: ••• Barcap initiates TRLA (ew), DB upgrades ANNEM & initiates MCHX (buy) ••• GS downgrades CNVR (sell) & initiates AAL (buy) & u