NEW YORK ( TheStreet) -- CHANGE IN RATINGSAruba Networks ( ARUN) was initiated with a Buy rating at Needham. $28 price target. Company is leveraged to multiple secular growth trends, Needham said. Atmel ( ATML) was initiated with a Buy rating at Maxim. $12 price target. Company can grow through the touch market and gain market share in MCU, Maxim said. Comerica ( CMA) was initiated with a Sell rating at Citigroup. $29 price target. Valuation driven along with near-term negative catalysts, Citigroup said. CNO Financial ( CNO) was initiated with a Buy rating at Goldman Sachs. $9 price target. Company has superior growth prospects and is improving its balance sheet, Goldman said. First Horizon National ( FHN) was initiated with a Neutral rating at Citigroup. $11 price target. As derisking continues, focus shifts to growth, Citigroup said. Huntington Bancshares ( HBAN) was initiated with a Neutral rating at Citigroup. $7 price target. Collecting deposits, waiting for the turn, Citigroup said. Keycorp ( KEY) was initiated with a Buy rating at Citigroup. $10 price target. Despite the lack of catalysts, the stock is cheap, Citigroup said. Liquidity Services ( LQDT) was upgraded from Hold to Buy at Benchmark. $57 price target. Estimates were also boosted, as the company is expanding its market, Benchmark said. MDC ( MDC) was downgraded at JP Morgan to Underweight. Valuation call, as the stock is up 42% year to date, JP Morgan said. Nvidia ( NVDA) was initiated with a Buy rating at Cantor Fitzgerald. $20 price target. Company is leveraged to several growing technology trends and trades at a discount to its peers, Cantor said. Panera Bread ( PNRA) was initiated with an Outperform rating at Credit Suisse. $190 price target. Market is not yet pricing in the company's full earnings growth potential, Credit Suisse said. Quality Systems ( QSII) was downgraded at Morgan Stanley from Overweight to Equal-weight. Risk/reward is more balanced at current levels, Morgan Stanley said. Pike Electric ( PIKE) was downgraded to Hold by TheStreet Ratings. Regions Financial ( RF) was initiated with a Neutral rating at Citigroup. $7 price target. TARP overhang removed, credit overhang remains, Citigroup said. SPX Corp. ( SPW) was started with an Outperform rating at Robert Baird. $95 price target. Company should deliver late-cycle earnings acceleration, Robert Baird said. SunTrust Banks ( STI) was initiated with a Neutral rating at Citigroup. $26 price target. Upward EPS revisions and multiple expansion possible, but priced in at current valuation, Citigroup said. Thomson Reuters ( TRI) was upgraded to Hold at TheStreet Ratings.