Analyst Upgrades

• Barclays upgraded Western Digital (WDC) to overweight from equal weight.
• LDK Solar (LDK) was upgraded to buy from hold at Needham.
• Legg Mason (LM) was upgraded to outperform from neutral at Macquarie.
• Agilent (A) was upgraded to buy from hold at Stifel Nicolaus.
• Wells Fargo upgraded Dean Foods (DF) to outperform from market perform and Developers Diversified (DDR) to market perform from underperform.
• Deutsche Bank also upgraded Developers Diversified, to buy from hold.
• Northrop Grumman (NOC) was upgraded to sell from conviction sell at Goldman.
• MYR Group (MYRG) was upgraded to buy from hold at BB&T.

MOST NOTEWORTHY: Heelys (HLYS), Audible (ADBL) and Response Genetics (RGDX) were today's most noteworthy initiations:

• Baird believes Heelys (NYSE: HLYS) is poised to report strong results through FY07, which is not reflected in current valuation, and started shares with an Outperform rating and $47 target.

• JMP Securities believes a growing number of consumers will opt to acquire books and physical CD audio books digitally over the internet and started shares of Audible (NASDAQ: ADBL) with an Outperform rating and $12.50 target.

• Caris believes Response Genetics' (NASDAQ: RGDX) diagnostics opportunity may represent a significant long-term growth driver and initiated shares with a Buy rating and $7.50 target...

OTHER INITIATIONS:

• JP Morgan initiated DeVry (NYSE: DV), Corinthian Colleges (NASDAQ: COCO) and Strayer Education (NASDAQ: STRA) with Overweight ratings, ITT Educational Service (NYSE: ESI), Apollo Group (NASDAQ: APOL) and Career Education (NASDAQ: CECO) with Neutral ratings and Universal Technical Institute (NYSE: UTI) with an Underweight rating.

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

MOST NOTEWORTHY: The educational services industry, the Latin American airlines sector, Asta Funding Inc (NASDAQ: ASFI) and Chipotle Mexican Grill Inc (NYSE: CMG) were today's noteworthy initiations:

• William Blair assumed coverage of Apollo Group Inc (NASDAQ: APOL) and Strayer Education Inc (NASDAQ: STRA) with Outperform ratings and Career Education Corporation (NASDAQ: CECO) with a Market Perform rating. The broker also assumed coverage and downgraded DeVry Inc (NYSE: DV) to Market Perform from Outperform.
  
• Goldman Sachs initiated coverage on Copa Holdings (NYSE: CPA) with a Buy rating and $88 target, GOL Linhas Aereas Inteligentes SA (NYSE: GOL) and TAM SA (NYSE: TAM) with Neutral ratings and Lan Airlines SA (NYSE: LFL) with a Sell rating and $93 target; Lan Airlines was also initiated at Morgan Stanley with an Overweight rating and $105 target.
  
• Asta Funding was initiated at Kaufman Brothers with a Buy rating and $55 target. The firm believes the company should grow earnings at a midpoint of 20% over time, with near-term growth at 15% and longer-term growth at 20%-25%.
  
• Citigroup initiated shares of Chipotle Mexican Grill with a Buy rating and $100 target, as the firm expects the company will see unit growth at a rate in the high-teens while experiencing above-average SSS and some margin expansion.

OTHER INITIATIONS:

• BMO Capital initiated shares of CDC Corp (NASDAQ: CHINA) with a Market Perform rating and $11 target.
  
• Jazz Technologies Inc (NYSE: JAZ) was initiated with a Buy rating and $5 target at Wedbush Morgan Securities.
  
• Calyon Securities initiated shares of Pinnacle Entertainment Inc (NYSE: PNK) with an Add rating and $32 target.
• Luminex Corporation (NASDAQ: LMNX) was initiated with a Buy rating at Pacific Growth Equities.