Analyst upgrades:

• Deutsche Bank upgraded Cemex (NYSE: CX) to Buy from Hold on decreased dilution risk following the company's successful refinancing and raised its target on shares to $15 from $11.20.
• Rochdale upgraded Wal-Mart (NYSE: WMT) to Buy from Neutral and raised its target to $65. The firm is positive on Wal-Mart's defensive characteristics, cyclical upside, and competitive position.
• JPMorgan upgraded Gartner Group (NYSE: IT) to Overweight from Neutral to reflect stabilization in IT industry spending and the stock's attractive valuation. The firm has a $23 price target on the stock.
• Cavium Networks (NASDAQ: CAVM) was upgraded to Overweight from Equal Weight at Barclays.
• Borg-Warner (NYSE: BWA) was upgraded to Buy from Neutral at BofA/Merrill.
• Nanometrics (NASDAQ: NANO) was upgraded to Outperform from Perform at Oppenheimer.

Analyst upgrades:

• Citigroup upgraded Sunoco Logistics (NYSE: SXL) to Buy from Hold on valuation and raised its target on shares to $60 from $56.50. The firm sees better value in Sunoco Logistics than Enbridge Energy Partners (NYSE: EEP), which it downgraded to Hold.
  
• BofA/Merrill believes Raytheon (NYSE: RTN) offers the most potential upside in the larget cap defense sector. The firm upgraded shares to Buy from Neutral and has a $62 target on the stock.
  
• Roth Capital upgraded Nvidia (NASDAQ: NVDA) to Buy from Hold based on seasonality, multiple product cycles, and valuation. Roth's target remains $15.
• Oracle (NASDAQ: ORCL) was upgraded to Buy from Hold at Societe Generale.
  
• EnerNOC (NASDAQ: ENOC) was upgraded to Outperform from Neutral at RW Baird.
  
• American Express (NYSE: AXP) was upgraded to Neutral from Underweight at JP Morgan.
  

Analyst upgrades:

• Morgan Stanley said Bank of America's (NYSE: BAC) capital needs are largely known and shares are trading "cheaply despite reduced downside risk." The firm upgraded shares to Overweight from Underweight and raised the price target to $25 from $16. Shares were also upgraded to Outperform from Neutral at Baird citing manageable capital needs and attractive risk/reward.
  
• Keefe Bruyette upgraded Fifth Third Bancorp (NASDAQ: FITB) to Outperform from Market Perform on valuation as it views the stock as inexpensive despite the recent rally. The firm has an $8 target on the stock.
• Banc of America/Merrill upgraded Ericsson (NASDAQ: ERIC) to Buy from Neutral as it believes fewer hedging losses could bring upside over the next few quarters.
• Rio Tinto (NYSE: RTP) was raised to Overweight from Neutral at Barclays.
  
• EnerNOC (NASDAQ: ENOC) was lifted to Buy from Neutral at Janney Montgomery.
  
• Westpac Banking (NYSE: WBK) was upgraded to Neutral from Underperform at Credit Suisse.

Analyst upgrades:

• Deutsche Bank upgraded AmerisourceBergen (NYSE:ABC) to Buy from Hold on valuation as it views the risk/reward as favorable at current levels. Deutsche raised its target price to $41.50 from $38.
  
• FBR Capigal upgraded Charlotte Russe (NASDAQ:CHIC) to Outperform from Market Perform following the company's Q2 results on expectations merchandise improvements and cost-cutting efforts will drive continued margin expansion. The firm raised its target on shares to $15 from $10.
  
• Oppenheimer upgraded Fidelity National (NYS:FIS) to Outperform from Perform as it believes the Metavante (MV) acquisition makes strategic sense and the stock's risk/reward is favorable. The firm's target price is $25.
• First American (NYSE:FAF) was upgraded to Outperform from Market Perform at Keefe Bruyette.
  
• Nokia (NYSE:NOK) was raised to Neutral from Underweight at JP Morgan.
  
• Parker-Hannifin NYSE:(PH) was lifted at Wachovia to Outperform from Market Perform.

MOST NOTEWORTHY: Chipotle Mexican Grill, Micrus Endovascular and Acorda Therapeutics were today's noteworthy initiations:

• Jefferies expects the quality gap between Chipotle Mexican Grill (NYSE: CMG) and its peers will become more apparent in a weakening consumer environment. The firm started shares with a Buy rating and $110 target.
  
• Micrus Endovascular (NASDAQ: MEND) was initiated with an Outperform rating and $20 target at Barrington, citing the company's strong product line, improving salesforce, leading market share position and their expectation for continued strong transition from clipping to coiling.
  
• Acorda Therapeutics (NASDAQ: ACOR) was assumed with an Overweight rating at JP Morgan, as they believe the company's Fampridine-SR for multiple sclerosis is a $500M + opportunity

OTHER INITIATIONS:

• Stanford initiated Mariner Energy (NYSE: ME) with a Buy rating and $35 target.
  
• Deutsche Bank assumed Liberty Entertainment (NASDAQ: LMDIA) with a Buy rating and $29 target.
  
• EnerNoc (NASDAQ: ENOC) was initiated with a Neutral rating at Broadpoint.

Readers of this space know that the investment bias is toward large-cap companies with demonstrated business models and who have a competitive advantage in established markets, preferably with a favorable global trend as a support. But every once in while an exception is made for a non-conforming but innovative/promising company, and along this line EnerNOC is worth a review.

EnerNOC, Inc. (Nasdaq: ENOC) develops and provides clean power solutions to commercial, institutional, and industrial customers, as well as to electric power grid operators and utilities.

Analysts really like ENOC's next-generation, technology-based business model. The company uses its network operations center to remotely manage electricity consumption across a network of end-use customer sites and to make electric capacity and energy available on demand to grid operators and utilities.

MOST NOTEWORTHY: The U.S. clean energy sector, MGI Pharma, Apple and Kosan Biosciences were today's noteworthy initiations:

• Morgan Stanley initiated the U.S. clean energy sector with an Attractive view. The analyst assumed coverage of First Solar (NASDAQ: FSLR), Fuel Tech (NASDAQ: FTEK) and SunPower Corporation (NASDAQ: SPWR) with Overweight ratings and EnerNOC, Inc (NASDAQ: ENOC) with an Underweight rating.
  
• Banc of America started shares of MGI Pharma (NASDAQ: MOGN) with a Buy rating and $45 target, as they expect sales growth in 2008 to be driven by Aquavan, which they view as an underappreciated asset, and potential survival data for Dacogen.
  
• Soleil believes Apple (NASDAQ: AAPL) could nearly double its PC market share to between 5.5% and 6% over the next five years. The firm started shares with a Buy rating and $200 target.
  
• Roth Capital initiated Kosan Biosciences (NASDAQ: KOSN) with a Buy rating and $10 target, as they are positive on the company's Hsp90 program and expect an NDA filing as early as 2009 in the relapsed-refractory settings.

OTHER INITIATIONS:

• KeyBanc Capital initiated CastlePoint Holdings (NASDAQ: CPHL) with a Buy rating and $16 target.
  
• Time Warner Telecom (NASDAQ: TWTC) was started at Cowen with an Outperform rating.
  
• Jefferies resumed coverage of Windstream (WIN) with a Hold rating and $16 target and Embarq Corporation (NYSE: EQ) with a Buy rating and $68 target.

MOST NOTEWORTHY: Genesit Energy LP (GEL), EnerNoc (ENOC) and Comcast (CMCSA) were today's noteworthy initiations:

• Genesis Energy (AMEX: GEL) was initiated with a Buy rating and $40 target at Stanford, as the firm believes the company's affiliation with Denbury Resources and pending acquisition of petroleum products, terminals, and transportation businesses from the Davison family will drive rapid growth.

• EnerNoc Inc (NASDAQ: ENOC) was initiated with a Hold rating and $42 target at Jefferies, due to valuation. EnerNoc was also initiated at Morgan Stanley with an Equal Weight rating and $40 target.

• Stifel expects Comcast (OTC: CMCSA) to benefit from higher penetration levels of DVR and HDTV set-top boxes over the next several years and initiated shares with a Buy rating and $34 target.

OTHER INITIATIONS:

• Select asset managers were initiated at Credit Suisse:

• AllianceBernstein (NYSE: AB), Affiliated Managers (NYSE: AMG), Fortress Investment (NYSE: FIG), Invesco (NYSE: IVZ), Franklin Resources (NYSE: BEN) and T Rowe Price (NASDAQ: TROW) were initiated with Outperform ratings.

• Blackrock (NYSE: BLK), Calamos Asset Mgmt (NADAQ: CLMS), Eaton Vance Corp (NYSE: EV), Federated Investors (NYSE: FII), Janus Capital (NYSE: JNS), Legg Mason Inc (NYSE: LM) and Waddell & Reed (NYSE: WDR) were initiated with Neutral ratings.

• Deutsche Bank initiated Ryland Group (NYSE: RYL) with a Buy rating and $52 target, as well as Pulte Homes (NYSE: PHM) and Meritage Homes Corp (NYSE: MTH) with Hold ratings and a $23 target and $29 target, respectively.

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