MOST NOTEWORTHY: Georgia Gulf, Sohu.com and I-flow were today's noteworthy downgrades:

• Citigroup downgraded Georgia Gulf (NYSE: GGC) to Sell from Hold to reflect the deteriorating fundamentals in North American housing, and their belief that the company is increasingly likely to break its debt covenant ratio.
  
• Deutsche Bank downgraded shares of Sohu.com (NASDAQ: SOHU) to Hold from Buy on valuation and expects 2009 growth to be modest.
  
• Piper cut I-Flow (NASDAQ: IFLO) to Sell from Neutral following the weak Q1 report and guidance.

OTHER DOWNGRADES:

• Morgan Stanley downgraded Coca-Cola Femsa (NYSE: KOF) to Equal Weight from Overweight.
  
• Goldman removed Teva Pharma (NASDAQ: TEVA) from its Conviction Buy List.
  
• Aqua America (NYSE: WTR) was cut to Market Perform from Outperform at Wachovia.
  
• JP Morgan lowered PetroChina (NYSE: PTR) to Underweight from Neutral.

MOST NOTEWORTHY: Lowe's (LOW), Cooper Tire & Rubber (CTB), Campbell Soup (CPB), Reuters Group (RTRSY) and Netease.com (NTES) were today's noteworthy upgrades:

• JP Morgan upgraded Lowe's (NYSE: LOW) to Overweight from Neutral based on improved risk/return and conservative near-term estimates. UBS upgraded Lowe's to Buy from sell on valuation.

• Cooper Tire & Rubber (NYSE: CTB) was upgraded to Buy from Sell, as the firm thinks Copper is benefiting from surging demand for tires in Asia and considers the recent weakness a buying opportunity.

• UBS upgraded shares of Campbell Soup (NYSE: CPB) to Buy from Neutral, citing expected growth acceleration, productivity savings, and attractive valuation.

• Deutsche Bank is positive on the Thomson (TOC)-Reuters combination and expected synergies, upgrading Reuters Group (NASDAQ: RTRSY) to Buy from Hold.

• Netease.com (NASDAQ: NTES) was upgraded to Positive from Neutral at Susquehanna based on valuation and checks that indicate better than expected performance of Westward Journey Online III...

OTHER UPGRADES:

• Georgia Gulf (NYSE: GGC) was raised to Neutral from Sell.

• US Airways (NYSE: LCC) was upgraded to Buy from Neutral.

• Banc of America upgraded Glu Mobile (NASDAQ: GLUU) to Buy from Neutral.

• Think Equity upgraded Jazz Technologies (AMEX: JAZ) to Buy from Source of Funds.

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

MOST NOTEWORTHY: Countrywide Financial (CFC), Hoku Scientific (HOKU), Lam Research (LRCX), Weight Watchers (WTW) and NutriSystem (NTRI) were today's more noteworthy downgrades:

• Friedman Billings downgraded Countrywide Financial (NYSE: CFC) to Underperform from Market Perform until credit stabilizes.

• Piper Jaffray downgraded Hoku Scientific (NASDAQ: HOKU) to Underperform from Outperform and sees several near-term risks, including competitive threats from larger and well-financed polysilicon start ups as well as financing risk.

• ThinkEquity downgraded Lam Research (NASDAQ: LRCX) to Source of Funds from Accumulate, expecting a recovery in the foundry segment but at 90nm, the nodes where Lam's market share is not high.

• Lehman downgraded Weight Watchers (NYSE: WTW) to Underweight from Equal Weight and NutriSystem (NASDAQ: NTRI) to Equal Weight from Overweight...

OTHER DOWNGRADES:

• First Albany downgraded Sketchers USA (NYSE: SKX) to Neutral from Buy.

• UBS downgraded Georgia Gulf (NYSE: GGC) to Reduce from Neutral.

• Bear Stearns cut GlaxoSmithKline (NYSE: GSK) to Underperform from Peer Perform.

• AG Edwards cut Peabody Energy (NYSE: BTU) to Hold from Buy.

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

MOST NOTEWORTHY: ValueClick, Inc (VCLK), aQuantive, Inc (AQNT), Cigna Corp (CI), Warner Music Group (WMG), Clear Channel Communications, Inc (CCU) and Medtronic, Inc (MDT) were today's more notable downgrades:

• Baird cut ValueClick Inc (NASDAQ: VCLK) to Neutral from Outperform, citing the FTC inquiry.

• aQuantive (NASDAQ: AQNT) was downgraded to Sell from Buy after the company was acquired by Microsoft (MSFT) and because aQuantive no longer trades on fundamentals. Kaufman and Gabelli also cut aQuantive to Hold from Buy.

• Cigna (NYSE: CI) was downgraded at Prudential to Neutral from Overweight on valuation.

• Warner Music Group's (NYSE: WMG) downgrade to Sell from Neutral at Pali Research was based on the lower industry outlook, which Pali believes revenues are likely to fall at least 10% for the industry in 2007, along with the company's release schedule.

• Bear Stearns downgraded Clear Channel Communications (NYSE: CCU) to Peer Perform from Outperform on the acceptance of the higher bid.

• Medtronic Inc (NYSE: MDT) was downgraded to Underweight from Equal Weight at Morgan Stanley...

OTHER DOWNGRADES:

• Georgia Gulf Corp (NYSE: GGC) was downgraded to Sell from Hold at Matrix USA.

• Stifel cut Core Laboratories (NYSE: CLB) to Hold from Buy.

• UBS downgraded Intuit Inc (NASDAQ: INTU) to Neutral from Buy.

• Occidental Petroleum Corp (NYSE: OXY) was removed from Goldman's Conviction Buy list.

• Friedman Billings downgraded downgraded CapitalSource, Inc (NYSE: CSE) and Countrywide Financial Corp (NYSE: CFC) to Market Perform from Outperform.

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

MOST NOTEWORTHY: Today's noteworthy upgrades include Papa John's Int'l, Inc (PZZA), ExpressJet Holdings, Inc (XJT), Nvidia Corp (NVDA),Georgia Gulf Corp (GGC) and MasterCard (MA):

• Following Q1 results, Oppenheimer upgraded shares of Papa John's Int'l, Inc (NASDAQ: PZZA) to Buy from Neutral, citing better-than-expected revenue growth, improved margins and acquisitions.

• Soleil upgraded shares of ExpressJet Holdings (NYSE: XJT) to Hold from Sell with a $7 target due to the likely absence of any real news until at least August.

• Deutsche Bank assumed shares of Nvidia (NASDAQ: NVDA) with a Buy, up from Hold, as the firm believes Vista will accelerate NVDA's growth rates making their 2008 estimates conservative.

• Citigroup upgraded shares of Georgia Gulf Corp (NYSE: GGC) to Buy from Sell based on an improved near-term outlook.

• MasterCard (NYSE: MA) was upgraded to Hold from Sell at Stifel based on the lenders impressive Q1 results and pricing power...

OTHER UPGRADES:

• Baird upgraded Barnes Group Inc (NYSE: B) to Outperform from Neutral.

• Pacific Ethanol Inc (NASDAQ: PEIX) was raised to Hold from Sell at Hambrecht.

• LCA-Vision Inc (NASDAQ: LCAV) was upgraded to Buy from Neutral at Oppenheimer.

• Bernstein raised Barr Pharmaceuticals, Inc (NYSE: BRL) to Outperform from Market Perform.

• Morgan Stanley upgraded Nektar Therapeutics (NASDAQ: NKTR) to Equal Weight from Underweight.

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