Editor's Note: Green and red arrows refer to intraday stock price movement. NEW YORK ( TheStreet) -- CHANGE IN RATINGS Casey's General Stores ( CASY - Get Report) upgraded at BofA/Merrill from Neutral to Buy. $49 price target. Merchandise comps are improving. Encana ( ECA - Get Report) downgraded at Benchmark from Buy to Hold. Company is leveraged to lower natural gas prices. F5 Networks ( FFIV - Get Report) upgraded at Stifel from Hold to Buy. Valuation call, based on an $84 price target. Google ( GOOG - Get Report) rated new Outperform at Baird. $650 price target. Company is a dominant market leader and remains leveraged to secular growth. Synchronoss Technologies ( SNCR - Get Report) upgraded at Baird from Neutral to Outperform. $36 price target. Company is better relatively positioned for a possible economic downturn. Valmont Industries ( VMI - Get Report) rated new Buy at Keybanc. $110 price target. Company has solid management and is trading near trough valuations. End of report.