UPGRADES:
Merrill Lynch and Cowen & Co. upgrade Williams-Sonoma (NYSE: WSM) from Underperform to Buy and from Undperform to Neutral, respectively.

Goldman Sachs upgrades Signet Group (NYSE: SIG) from Sell to Neutral.

Citi upgrades Cadbury (NYSE: CBY) from Sell to Hold.

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

DOWNGRADES:
J.P. Morgan downgrades Rio Tinto (NYSE: RTP) from Overweight to Neutral.

Citi downgrades 3M (NYSE: MMM) from Hold to Sell. Price target $57.

Cowen & Co downgrades Palm (Nasdaq: PALM) to Neutral.

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

NEW COVERAGE:
J.P. Morgan and UBS resume coverage on BHP Billiton (NYSE: BHP) with an Overweight and Buy