UPGRADES:
Goldman Sachs upgrades Teradyne (NYSE: TER) from Neutral to Buy.

Goldman Sachs upgrades Terra Industries (NYSE: TRA) from Neutral to Buy.

Deutsche Bank upgrades AstraZeneca (NYSE: AZN) to Buy. Click here for the full report.

Wachovia upgrades Boston Scientific (NYSE: BSX) to Outperform. Click here for the full report.

For daily real-time Upgrades go to http://www.streetinsider.com/Upgrades

DOWNGRADES:
Goldman Sachs downgrades U.S. Steel (NYSE: X) from Neutral to Sell and placed the stock on its Conviction Sell List, with a $23 price target.

JP Morgan downgrades Allstate Corp. (NYSE: ALL) from Neutral to Underweight.

Leerink Swann downgrades Schering-Plough (NYSE: SGP) from Outperform to Market