NEW YORK ( TheStreet) -- CHANGE IN RATINGS Ann ( ANN) was upgraded at Janney Montgomery to buy from neutral. Valuation call, based on a $38 price target, Janney Montgomery said. Anadarko Petroleum ( APC) was initiated with a buy rating at Canaccord Genuity. $115 price target. Company can grow both onshore and in deepwater, Canaccord said. Cedar Fair ( FUN) was upgraded to buy at The Chipotle ( CMG) was upgraded at Jefferies to hold from underperform. $400 price target. Higher same-store sales and lower food costs are boosting returns, Jefferies said. Diamond Offshore ( DO) was downgraded at UBS to neutral from buy. $68 price target. Have a more cautious outlook for the intermediate term, UBS said. Diamond Offshore was downgraded to hold at TheStreet Ratings. PNRA) was downgraded at Jefferies to hold. $195 price target. Company is investing more in future growth, which could lead to a pause in earnings momentum, Jefferies said. Transocean ( RIG) was downgraded at UBS to neutral from buy. $49 price target. Seeing a short-term bubble in the floater market, UBS said. Riverbed ( RVBD) was downgraded at Deutsche Bank to sell from hold. $11 price target. Research suggests a diminishing value perception for the company's premium optimization services, Deutsche Bank said. URBN) was upgraded at Wedbush to outperform from neutral. $52 price target. Company has solid momentum and can generate earnings upside, Wedbush said. Xcel ( XEL) was downgraded at J.P. Morgan to underweight from neutral. $27 price target. Company is seeing slower near-term growth and increased capital costs, J.P. Morgan said.