Analyst Upgrades

• JPMorgan upgraded Dollar Tree (DLTR) to neutral from underweight and $48 price target.
• Credit Suisse upgraded Time Warner Cable (TWC) to outperform from neutral and raised its price target to $70 from $59, citing growth in wireline HST demand.
• Needham upgraded NetScout (NTCT) to buy from hold with a $29 price target, citing channel checks that indicate industry spending on network monitoring software may be improving.
• Nstar (NST) was upgraded to buy from neutral at BofA/Merrill.
• Novo Nordisk (NVO) was upgraded to hold from sell at Societe Generale.
• Air France-KLM (AFLYY) was upgraded to neutral from underperform at Credit Suisse.

MOST NOTEWORTHY: Invesco, Visa and Netscout Systems were today's noteworthy initiations:

• Keefe Bruyette believes Invesco's (NYSE:IVZ) initiatives will drive significant revenue and operating leverage to any improvement in the operating environment. The firm started shares with an Outperform rating and $28 target. Visa was started ast Cowen with an Outperform rating, as they are positive on the Visa's growth prospects and attractive business model.
  
• Keefe Bruyette also recommends owning Visa (NYSE:V), assuming coverage with an Outperform rating and $80 target, and established FY08, FY09, and FY10 EPS estimates of $1.89, $2.33 and $2.80.
  
• Netscout Systems (NASDAQ:NTCT) was initiated at ThinkEquity with a Buy rating and $13 target. ThinkEquity believes Netscout is well positioned to outperform and win share in its addressable market niche following the Network General acquisition. Additionally, the firm views NTCT as an attractive takeover candidate for larger infrastructure management players.

OTHER INITIATIONS:

• JP Morgan initiated Signature Bank (SBNY) with a Neutral rating.
  
• Wendy's (WEN) was reinstated at Goldman with a Sell rating and $21 target.
  
• Needham started NeuStar (NSR) with a Hold rating.

MOST NOTEWORTHY: Advanced Micro Devices, Intel Corporation, Netscout Systems, Guidance Software and Nasdaq were today's noteworthy initiations:

• Morgan Stanley started shares of Advanced Micro Devices Inc (NYSE: AMD) and Intel Corporation (NASDAQ: INTC) with Underweight ratings and a $11 target and $22 target, respectively. The firm recommends selling shares of both as they expect an inventory correction and increasingly aggressive price environment.
  
• Kaufman Brothers initiated shares of Netscout Systems Inc (NASDAQ: NTCT) with a Buy rating and $13.50 target. The firm is positive on the Network General acquisition and believes successful integration as well as continued improvement in sales execution will drive shares higher.
  
• Roth Capital resumed coverage of Guidance Software Inc (NASDAQ: GUID) with a Buy rating and $15 target and said the company is the market leader for digital forensics and that new regulations have accelerated electronic discovery in the forensic market.
  
• Jefferies started shares of The Nasdaq Stock Market Inc (NASDAQ: NDAQ) with a Buy rating and $45 target and believes the company's relative underperformance over the past two years creates an attractive entry point as earnings are poised to accelerate.

OTHER INITIATIONS:

• Credit Suisse initiated the small-cap biotechnology sector, starting shares of Poniard Pharmaceuticals Inc (NASDAQ: PARD), Dyax Corp (NASDAQ: DYAX) and Dynavax Technologies Corporation (NASDAQ: DVAX) with Outperform ratings and targets of $9, $7 and $8, respectively.
  
• Broadpoint initiated Lululemon Athletica Inc (NASDAQ: LULU) with a Neutral rating.
  
• JP Morgan started shares of Vornado Realty Trust (NYSE: VNO) and Douglas Emmett Inc (NYSE: DEI) with Neutral ratings.