MRC Global ( MRC) was initiated with an Outperform rating at Robert Baird. $27 price target. Company is a market leader and leveraged to favorable industry trends, Robert Baird said. MRC Global was initiated with a Neutral rating at Goldman Sachs. Valuation call, based on a $20 price target, Goldman said. Manitowoc ( MTW) was upgraded at Goldman Sachs to Buy from Neutral. $15 price target. Trough valuation and emerging U.S. crane recovery, Goldman said. Oaktree ( OAK) was initiated with an Overweight rating at Morgan Stanley. $55 price target. Company is seeing higher asset growth, Morgan Stanley said. Oaktree was initiated with a Neutral rating at Credit Suisse. $45 price target. Signature Bank ( SBNY) was upgraded at Guggenheim from Neutral to Buy. $71 price target. Company should see a continued organic growth in its core business, Guggenheim said. Sirona Dental ( SIRO) was initiated with a Buy rating at Cantor Fitzgerald. $57 price target. Company can return to mid-teens earnings growth by next year, Cantor said. Tidewater ( TDW) was upgraded from Market Perform to Outperform at Clarkson Capital. $58 price target. Stock is attractive following a recent pullback, Clarkson said. Western Refining ( WNR) was upgraded at Dahlman Rose from Hold to Buy. $25 price target. Oil spreads should remain attractive into the second half of the year, Dahlman Rose said.