Analyst upgrades:

• Barclays upgraded Dollar Tree (NASDAQ: DLTR) to Overweight from Equal Weight and raised its target to $64 from $48 following the better-than-expected Q2 report.
• Cowen upgraded Whirlpool (NYSE: WHR) to Outperform from Neutral. The firm cites stabilizing demand trends and recovering margins for the upgrade.
• Susquehanna upgraded Isle of Capri (NASDAQ: ISLE) citing weakness following the weak quarter. The firm, which has a $13 target on shares, expects regional operators to benefit from improving macro trends quicker than destination markets.
• Senior Housing (NYSE: SNH) was upgraded to Outperform from Market Perform at Wells Fargo.
• Barclays (NYSE: BCS) was upgraded to Outperform from Market Perform at Keefe Bruyette.
• CGI Group (NYSE: GIB) was upgraded to Buy from Speculative Buy at Canaccord.

Analyst upgrades:

• Keefe Bruyette upgraded KeyCorp (NYSE: KEY) to Outperform from Market Perform due to valuation and the company's capital position. The firm has an $8 target price on the stock.
• BofA/Merrill upgraded its view of the semiconductor sector and upgraded Intel (NASDAQ: INTC) and Marvell Technology (NASDAQ: MRVL) to Buy from Neutral, LSI Corp. (NYSE: LSI) to Buy from Underperform, and Maxim (NASDAQ: MXIM) and National Semiconductor (NYSE: NSM) to Neutral from Underperform. The firm now sees 2010 revenue growth of 21% vs. its prior estimate of 14% due to improving electric demand and lean inventories.
• Thomas Weisel upgraded Vital Images (NASDAQ: VTAL) to Overweight from Market Weight based on compelling valuation and potential upside from its new ViTAL Enterprise product offering.
• Jones Apparel (NYSE: JNY) was upgraded to Buy from Neutral at Goldman.
• Hess Corp. (NYSE: HES) was upgraded to Overweight from Equal Weight at Barclays.
• Nationwide Health (NYSE: NHP) was upgraded to Outperform from Market Perform at Morgan Keegan.

Analyst upgrades:

• Goldman upgraded Nokia (NYSE: NOK) to Neutral from Sell on valuation and believes the company's guidance is realistic.
  
• SMH Capital upgraded GMX Resources (NASDAQ: GMXR) to Accumulate from Neutral and is positive on the company's capex reduction.
  
• Wachovia raised Nationwide Health Services (NYSE: NHP) to Outperform from Market Perform to reflect the company's diversified portfolio and "solid" capital position.
• Portugal Telecom (NYSE: PT) was upgraded to Equal Weight from Underweight at Morgan Stanley.
  
• Omnicare (NYSE: OCR) was upgraded to Buy from Hold at Soleil.
  
• SKF AB (OTC: SKFRY) was upgraded at JP Morgan to Neutral from Underweight.

Analyst downgrades:

MOST NOTEWORTHY: Wyeth, 3SBio Inc, Cellcom Israel and Partner Communications were today's noteworthy initiations:

• Citigroup initiated Wyeth (NYSE: WYE) with a Hold rating and $49 target. The firm believes the upside potential from bapineuzumab is masking the company's unfavorable average EPS and revenue growth forecast versus the industry.
  
• Piper believes 3SBio Inc (NASDAQ: SSRX) is the market leader in a largely underpenetrated EPO market in China and sees limited downside risk. Shares were assumed with a Buy rating and $12 target.
  
• RBC Capital initiated Cellcom Israel (NYSE: CEL) and Partner Communications (NASDAQ: PTNR) with Outperform ratings and targets of $40 and $30, respectively. RBC said they have defensive appeal given their predictable earnings stream.

OTHER INITIATIONS:

• HCP (NYSE: HCP), Nationwide Health Properties (NYSE: NHP) and Medical Properties Trust (NYSE: MPW) were initiated with Market Perform ratings at Wachovia.
  
• SanDisk (NASDAQ: SNDK) was assumed with an Above Average rating and $20.50 target at Caris.