Autodesk upgraded at Oppenheimer: ADSK was upgraded to Buy, Oppenheimer said. $46 price target. Company should be able to build upon recent earnings momentum. 3D sales could ramp faster than expected. Autodesk estimates raised at Prudential: Prudential said it is raising its 2006 estimates on ADSK by 2 cents to $1.28 a share due to solid Q4 results and strong guidance. Maintained Neutral Weight rating. Altera upgraded at Bear: ALTR was upgraded from Peer Perform to Outperform, Bear Stearns said. Company appears to be having a good quarter, and could raise guidance on its mid-period update. Valuation also attractive, ahead of positive 2006 spending outlook. Applied Signal downgraded at Suntrust: APSG was downgraded to Neutral, Suntrust, Robinson Humphrey said. Estimates also cut, as the company could continue to disappoint financially in 2006. Charming Shoppes upgraded at CIBC: CHRS was upgraded from Underperform to Sector Perform, CIBC said. Recent management meeting suggests that multi-channel model could be successful. Spring line also looks good. Cogent downgraded at Oppenheimer: Oppenheimer said it was downgrading COGT from Buy to Neutral and cut FY 2006 EPS estimates by 20-cents to $0.70 on disappointing conference call. Cogent target, estimates cut at Jefferies: Jefferies said it was cutting FY 2006 EPS estimates on COGT from $0.82 to $0.50 and target by $7 to $15 on operating results. Maintained Underperform rating. Cogent downgraded at Bear: COGT was downgraded from Outperform to Peer Perform, Bear Stearns said. Visibility deteriorating, and results should be choppy in 2006. FedEx upgraded at Bear Stearns: Bear Stearns said it was upgrading FDX from Peer to Outperform on improving near term fundamentals. Maintained $126 target. General Dynamics upgraded at Merrill Lynch: Merrill Lynch said it was upgrading GD from Neutral to Buy citing Gulfstream strength undervalued. Maintained $140 price target.