Rowan ( RDC) was upgraded at Duncan-Williams to Strong Buy from Sell. $54 price target. Last quarter should prove to be a low point in earnings, Duncan-Williams said. Transocean ( RIG) was upgraded at Global Hunter to Neutral from Reduce. Stock is pricing in the company's lower earnings potential, Global Hunter said. Scotts Miracle-Gro ( SMG) was downgraded at RBC Capital to Sector Perform from Outperform. $61 price target. Company faces increased sales risk given the weather shift, RBC said. Valueclick ( VCLK) was upgraded at Merriman Capital to Buy. Acquisitions are helping to drive growth, Merriman said. Valueclick was upgraded at Jefferies from Hold to Buy. $20 price target. Core segments could see increased growth potential, Jefferies said. Valueclick was upgraded at Needham from Hold to Buy. $25 price target. Company is seeing improved margins, Needham said. Vertex Pharmaceuticals ( VRTX) was downgraded at Brean Murray from Buy to Hold. Valuation call, based on a $53 price target, Brean Murray said. End of report.