MOST NOTEWORTHY:

• Prudential downgraded shares of Pfizer Inc (NYSE: PFE) to Neutral from Overweight with a $29 target to reflect concerns about competition from generic medications and a lack of new products.

• Deutsche Bank cut both ExxonMobil Corp (NYSE: XOM) and ConocoPhillips (NYSE: COP) to Hold from Buy on valuation.

• Citigroup downgraded shares of Xerox Corp (NYSE: XRX) to Sell from Hold as the firm believes the acquisition of Global Systems could hurt profits in the short-term. The broker recommended trimming positions of Xerox on any strength.

• Amazon.com (NASDAQ: AMZN) was cut to Underperform from Market Perform at Piper Jaffray based on valuation...

• Stifel lowered its rating of Jones Soda Co (NASDAQ: JSDA) to Hold from Buy on valuation.

• Deutsche Bank downgraded shares of Chevron Corp (NYSE: CVX) to Sell from Hold based on valuation.

• CIBC downgraded shares of Coventry Health Care, Inc (NYSE: CVH) to Sector Performer from Outperformer on valuation.

• Needham downgraded Vertex Pharmaceuticals Inc (NASDAQ: VRTX) to Hold from Buy.

• Adtran, Inc (NASDAQ: ADTN) was cut to Sell from Hold at Brean Murray.

• JP Morgan removed Johnson Controls, Inc (NYSE: JCI) from its Focus List citing recent share strength.

Analyst downgrades 4-23-07: AMZN, CVX, JDSA, PFE, XOM and XRX downgraded today originally appeared on BloggingStocks on Mon, 23 Apr 2007 11:05:00 EST. Please see our terms for use of feeds.