des Sands China (buy), MS cuts RSH & upgrades NOV, Wells downgrades EW Key Research: JPM initiates FDO (ow) & DG (neut) & downgrades CVC & upgrades CP/AAP/MDC, Piper downgrades RSTI & upgrades WBC Key Research: CS initiates CHK (neut) & NBL (op) & cuts ATK, Bofa upgrades DNDN, Roth downgrades FCAL, Janne