MOST NOTEWORTHY: AU Optronics (AUO), RightNow Tech (RNOW), Alaska Air (ALK), Nordstrom (JWN), Gap (GPS) and Old Dominion Freight Line (ODFL) were today's noteworthy upgrades:

• HSBC upgraded AU Optronics (NYSE: AUO) to Overweight from Neutral following the company's Q2 results.

• Jefferies raised RightNow Technology (NASDAQ: RNOW) to Buy from Hold, believing low expectations have created a buying opportunity and that fundamentals remain intact.

• JP Morgan upgraded shares of Alaska Air (NYSE: ALK) to Overweight from Netural on valuation.

• Citigroup upgraded Nordstrom (NYSE: JWN) to Buy from Hold on valuation; they consider the recent pullback a buying opportunity.

• Citigroup upgraded Gap (NYSE: GPS) to Buy from Hold from valuation and expects for better execution and cost savings in 2008 under the new CEO.

• Credit Suise upgraded Old Dominion Freight Line (NASDAQ: ODFL) to Outperform from Neutral on valuation...

OTHER UPGRADES:

• Merriman upgraded MicroTune (NASDAQ: TUNE) to Buy from Neutral.

• Citirgroup raised Aeropostale (NYSE: ARO) to Hold from Sell.

• Merrill upgraded Cathay General (NASDAQ: CATY) to Neutral from Sell.

• The NYSE Euronext (NYSE: NYX) was upgraded to Neutral from Sell.

• Wachovia raised shares of Wendy's (NYSE: WEN) to Market Perform from Underperform.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: Nortel Networks Corp (NT), Bristol-Myers Squibb Co (BMY) and the select airliners were today's most noteworthy downgrades:

• Goldman cut Nortel Networks (NYSE: NT) to Sell from Neutral as the firm believes shares fully discount a successful execution on the cost restructuring.

• HSBC downgraded Bristol-Myers Squibb (NYSE: BMY) to Underweight from Neutral.

• JP Morgan sees few catalysts to drive airline shares higher and has downgraded the following stocks:

• AMR Corp (NYSE: AMR) and US Airways Group, Inc (NYSE: LCC) to Neutral from Overweight; Alaska Air Group, Inc (NYSE: ALK) and UAL Corp (NASDAQ: UAUA) to Underweight from Overweight; Continental Airlines, Inc (NYSE: CAL) and JetBlue Airways Corp (NADAQ: JBLU) to Underweight from Neutral.
  

OTHER DOWNGRADES:

• Keefe Bruyette downgraded Countrywide Financial Corp (NYSE: CFC) to Underperform from Market Perform, citing the impact of tighter credit standards for the move.

• OfficeMax Inc (NYSE: OMX) was cut to Underperform from Peer Perform at Bear Stearns.

• Matrix USA downgraded PepsiCo, Inc (NYSE: PEP) to Hold from Buy on valuation.

• Merrill Lynch downgraded Dean Foods Co (NYSE: DF) to Sell from Neutral.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: Hess Corp (HES), American Home Mortgage Investment Corp (AHM) and Anglo American plc (AAUK) were today's noteworthy downgrades.

• Lehman Brothers downgraded Hess Corp (NYSE: HES) to Underweight from Equal-Weight based on valuation.
• American Home Mortgage Investment Corp (NYSE: AHM) was cut to Underperform from Market Perform at Keefe Bruyette, to Market Perform from Outperform at Friedman Billings, to Equal-Weight from Overweight at Lehman Brothers, to Sell from Hold at Citigroup and to Hold from Buy at Deutsche Bank.
• Anglo American plc (NASDAQ: AAUK) was downgraded to Underperform from Market Perform at BMO Capital Markets based on valuation.

OTHER DOWNGRADES:

• Murphy Oil Corp (NYSE: MUR) was cut to Equal-Weight from Overweight at Lehman.
• Credit Suisse downgraded Alaska Air Group, Inc (NYSE: ALK) to Neutral from Outperform.
• Gabelli downgraded shares of A. Schulman, Inc (NASDAQ: SHLM) to Hold from Buy to reflect the company's weak second-quarter.
• Raymond James downgraded Avnet, Inc (NYSE: AVT) to Market Perform from Outperform.
• Blyth, Inc (NYSE: BTH) was cut to Sell from Hold on valuation.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).