MOST NOTEWORTHY:

• HSBC downgraded shares of AstraZeneca plc (NYSE: AZN) to Neutral from Overweight as the firm believes investors will have to wait until 2009 for the company to start benefiting from its strategy.

• Aeroflexx Inc (NASDAQ: ARXX) was cut to Hold from Buy at Jefferies with a $14 target based on valuation.

• Thomas Weisel downgraded shares of Symantec Corp (NASDAQ: SYMC) to Market Weight from Overweight citing a lack of near-term catalysts and increased risk from transitions in its business model.

• Chevron Corp (NYSE: CVX) was removed from AG Edwards' Focus Portfolio. The firm believes Chevron offers less upside potential than other companies in the sector.

• Exxon Mobil (NYSE: XOM) was downgraded to Hold from Buy on valuation and its balanced risk/reward profile...

• Piper Jaffray cut Juniper Networks, Inc (NASDAQ: JNPR) to Market Perform from Outperform with a $20 target.

• Friedman Billings downgraded L-3 Communications Holdings, Inc (NYSE: LLL) to Market Perform from Outperform.

• MedImmune, Inc (NASDAQ: MEDI) was downgraded to Equal Weight from Overweight at Lehman.

• Hecla Mining Co (NYSE: HL) was cut to Sector Underperformer from Sector Performer at CIBC based on valuation.

• Merrill Lynch cut Wendy's International (NYSE: WEN) to Sell from Neutral.

• Stanford downgraded shares of Sirius Satellite Radio Inc (NASDAQ: SIRI) to Hold from Buy with a $3 target.

Analyst downgrades 4-27-07: CVX, JNPR, SIRI, SYMC and WEN downgraded today originally appeared on BloggingStocks on Tue, 24 Apr 2007 11:31:00 EST. Please see our terms for use of feeds.