Akamai Technologies ( AKAM) downgraded at Deutsche Bank from Buy to Hold. $40 price target. Company had an upbeat analyst day, but fears of a shrinking gross margin could limit near-term upside. Bemis ( BMS) downgraded at Deutsche from Buy to Hold. $33 price target. Company likely to see disappointing volume demand and continues to faces high resin costs. Corinthian Colleges ( COCO) upgraded at Merrill from Neutral to Buy. Company posted a strong quarter, and solid enrollment trends should help expand margins. Estimates also raised. Commscope ( CTV) downgraded at Merrill from Buy to Neutral. Company recently gave a disappointing outlook for its core business, given its dependence on the US commercial construction business. Energizer ( ENR) upgraded at Bear from Underperform to Peer Perform. PYX purchase should add balance and growth. Fair value lies around $111 a share. Express Scripts ( ESRX) upgraded at Morgan Stanley from equalweight to overweight and moves price target to $75. Fair Isaac ( FIC) upgraded at Citigroup from Hold to Buy. $44 price target. $44 price target. Company posted strong quarterly results, and offered improved visibility on potential 2008 growth. Lodgenet Entertainment ( LNET) downgraded at Bear Stearns to Peer Perform. Company cut its near-term guidance, and has limited forward visibility. McKesson ( MCK) upgraded at Citigroup from Hold to Buy. $70 price target. Estimates also raised, as the company has improved its generic relationships. Medtronic ( MDT) upgraded at Morgan Stanley from underweight to equalweight but cuts 2008-2010 EPS estimates. Pacer International ( PACR) downgraded at JP Morgan to Neutral. Estimates also cut, as the company's intermodal margins are slipping. Pinnacle West ( PCLE) downgraded at JP Morgan to Underweight. Valuation call, as the company offered a weaker growth outlook.