Today's noteworthy downgrades include: Axiall (AXLL) downgraded to Sell from Neutral at UBS... Bazaarvoice (BV) downgraded to Equal Weight from Overweight at Morgan Stanley... CaixaBank (CAIXY) downgraded to Market Perform from Outperform at Keefe Bruyette... Cameron (CAM) downgraded to Hold from Buy at Johnson Rice... Dollar Tree (DLTR) downgraded to Buy from Strong Buy at Feltl... HeartWare (HTWR) downgraded to Market Perform from Outperform at Raymond James... Helmerich & Payne (HP) downgraded to Underperform from Market Perform at BMO Capital... QIWI (QIWI) downgraded to Neutral from Buy at UBS... Republic Airways (RJET) downgraded to Underperform from Market Perform at Cowen... Telefonica (TEF) downgraded to Underperform from Neutral at BofA/Merrill.