NEW YORK ( TheStreet) -- CHANGE IN RATINGSAlcoa ( AA) downgraded at Dahlman from Buy to Hold, Dahlman Rose said. Expect aluminum prices to remain range bound. Akorn ( AKRX) rated new Outperform at Leerink Swann. Company has solid near-term prospects and high barriers to entry for competition. Altera ( ALTR) downgraded at Jefferies to Hold from Buy, Jefferies said. $38 price target. Fairly valued, limited catalysts. Acuity Brands ( AYI) downgraded at Piper from Overweight to Neutral, Piper Jaffray said. Valuation call, based on a $66 price target. Cooper Tire ( CTB) rated new Neutral at Goldman. $25 price target. Stock is up 43% year-to-date and the company faces potential growth headwinds in the U.S. Dean Foods ( DF) upgraded at BMO to Outperform, BMO Capital said. Company can unlock value through capital actions. $21 price target. Goodyear ( GT) upgraded at Goldman from Neutral to Buy, Goldman Sachs said. Company should see better volume growth and industry pricing. $17 price target. Hewlett-Packard ( HPQ) downgraded at Jefferies to Underperform from Hold, Jefferies said. $14 price target. Mobile investment challenges. Immunogen ( IMGN) rated new Sell at UBS. $10 price target. Great drug, but valuation can't keep up. Monsanto ( MON) upgraded at Wells from Market Perform to Outperform, Wells Fargo said. Company should see better seed pricing and expand in Latin America. Northwestern ( NWE) downgraded at Keybanc from Buy to Hold, Keybanc said. Estimates also cut, given an unfavorable regulatory decision. Splunk ( SPLK) rated new Outperform at FBN. Company is a market leader and growing rapidly. $45 price target. Tibco ( TIBX) rated new Outperform at FBN. $35 price target. Company is a solid performer and could be a takeover candidate. Tyler Technologies ( TYL) rated new Outperform at Northland Securities. $49 price target. Company can accelerate earnings growth over the coming quarters.
STOCK COMMENTS / EPS CHANGES
Apple ( AAPL) estimates cut at UBS through 2013, UBS said. Supply issues cause reduced iPhone outlook. Buy rating and $780 price target. Baker Hughes ( BHI) numbers cut at Dahlman. BHI estimated were reduced through 2013, Dahlman Rose said. U.S. pressure pumping prices are falling. Buy rating and new $50 price target.