MOST NOTEWORTHY:

• Matrix USA downgraded shares of fast-food restaurant Wendy's International Inc (NYSE: WEN) to Sell from Hold to reflect the company's slowing revenues, increasing expenses and valuation.

• CIBC downgraded NOVA Chemicals Corp (NYSE: NCX) to Sector Underperformer from Sector Performer, lowering their target to $27.50 from $31 as they believe margins will be squeezed in 2008 once Middle Eastern supply begins to impact export markets.

• Following the company's lower guidance, UBS downgraded National Semiconductor Corp (NYSE: NSM) to Neutral from Buy with a $25 target, while Citigroup downgraded National Semi to Hold from Buy with a $27 target.

• Recent strength in Royal Caribbean Cruises Ltd (NYSE: RCL) forced Bank of America to remove it from their Top Pick list.

• Jefferies downgraded shares of Triad Hospitals Inc (NYSE: TRI) to Hold from Buy pending the buyout.

• JP Morgan downgraded shares of Altiris Inc (NASDAQ: ATRS) to Neutral from Outperform based on the Symantec (SYMC) acquisition.

• Thomas Weisel downgraded Medimmune Inc (NASDAQ: MEDI) to Market Perform from Outperform on valuation.

• Matrix USA downgraded Secure Computing Corp (NASDAQ: SCUR) to Sell from Buy on valuation.

Analyst downgrades 2-06-07: Wendy's shares too rich, downgrade to Sell originally appeared on BloggingStocks on Tue, 06 Feb 2007 11:23:00 EST. Please see our terms for use of feeds.