Analyst upgrades:

• Oppenheimer upgraded Momenta Pharmaceuticals (MNTA) to outperform from perform as it finds the stock attractive ahead of FDA's decision on M-enoxaparin. The firm has a $15 price target on the stock.
• Wells Fargo upgraded Symmetry Medical (SMA) to market perform from underperform. The firm cited several factors for the upgrade, including valuation and its belief that Symmetry's customers have begun to deplete their inventories.
• Piper Jaffray upgraded Myriad Pharmaceuticals (MYRX) to neutral from underweight after the company announced Phase 2a date for Azixa. The firm has a $5 price target on shares.
• AvalonBay (AVB) and Mid-America Apartment (MAA) were upgraded to outperform from sector perform at RBC Capital.
• GSI Commerce (GSIC) was upgraded to overweight from equal weight at Morgan Stanley.
• FICO (FICO) was upgraded to equal weight from Underweight at Stephens.

Analyst upgrades:

• Baird upgraded URS Corp. (NYSE: URS) to Outperform from Neutral and raised its target to Outperform from Neutral based on momentum of new wins from stimulus funds and expectations for additional nuclear contracts.
• Jefferies upgraded EnerSys (NYSE: ENS) to Buy from Hold following the recent share weakness as it believes volumes have stopped declining and the June quarter is likely the bottom. The firm raised its target price to $18 from $11.
• RBC Capital upgraded Camden Property (NYSE: CPT) to Outperform from Sector Perform citing the company's improved financial capacity and portfolio position. The firm raised its target price to $34 from $23.
• CBS Corp (NYSE: CBS) was upgraded to Equal Weight from Underweight at Barclays.
• UDR (NYSE: UDR) was raised to Sector Perform from Underperform at RBC Capital and to Outperform from Market Perform at Keefe Bruyette.
• Zale (NYSE: ZLC) was upgraded to Buy from Neutral at BofA/Merril.

Analyst upgrades:

• Deutsche Bank upgraded shares of Camden Property (NYSE: CPT) to Hold from Sell on valuation and believes the company has improved its liquidity position. Despite the upgrade, the firm lowered its target price to $21 from $25.
  
• Goldman added Best Buy (NYSE: BBY) to its Conviction Buy List as it is now the sole dominant retailer in consumer electronics and expects Best Buy's margins to benefit from Circuit City's demise.
  
• Molson Coors (NYSE: TAP) was upgraded to Overweight from Neutral at JP Morgan as it finds the valuation attractive and sees a number of long-term fundamental positive catalysts. The firm has a $47.50 target on shares.
• United Rentals (NYSE: URI) and Illinois Tool Works (NYSE: ITW) were upgraded to Buy from Neutral at UBS.
  
• ProLogis (NYSE: PLD) was upgraded to Buy from Neutral at Banc of America/Merrill.

Analyst downgrades:

• Oppenheimer downgraded Global Traffic Network (NASDAQ: GNET) to Perform from Outperform following the company's weaker than expected Q2 results and lowered its target price to $6.25 from $7.
  
• Friedman Billings downgraded BankAtlantic (NYSE: BBX) to Underperform from Market Perform to reflect the deterioration of both the company's credit and capital in Q4. The firm lowered its target price to $1 from $5.
  
• RBC Capital downgraded AbitibiBowater (NYSE: ABH) to Underperform from Sector Perform and lowered its target to 50 cents from $2.00 following the company's debt refinancing announcement.
• Lions Gate (NYSE: LGF) was cut to Market Weight from Overweight at Thomas Weisel.
  
• Ctrip.com (NASDAQ: CTRP) was downgraded at Goldman to Sell from Neutral.
  
• Molson Coors (NYSE: TAP) was downgraded to Neutral from Buy at Banc of America/Merrill.

Analyst initiations:

• Oppenheimer initiated Chattem (NASDAQ: CHTT) with an Outperform rating and believes the company's business model is well suited for the current uncertain consumer environment. The firm has an $80 target on the stock.
• Freeport McMoRan (NYSE: FCX) was initiated at BMO Capital with a Market Perform rating and $30 target.
  
• Anglo American (NASDAQ: AAUK) was assumed with a Sell rating at Societe Generale.
  
• Yamana Gold (NYSE: AUY) was started at UBS with a Buy rating.

MOST NOTEWORTHY: SanDisk Corp (SNDK), Nationwide Financial Services (NFS), Unica Corp (UNCA), International Paper Co (IP) and the Apartment REIT sector topped the day's noteworthy downgrades:

• CIBC cut SanDisk Corp (NASDAQ: SNDK) to Sector Performer from Outperformer on valuation.

• Nationwide Financial (NYSE: NFS) was downgraded to Underweight from Equal-Weight at Morgan Stanley on valuation.

• Ferris Baker cut Unica Corp (NASDAQ: UNCA) to Sell from Hold following the company's announcement that it has dismissed auditors Ernst & Young. Montgomery downgraded Unica to Hold from Buy on valuation.

• International Paper (NYSE: IP) was downgraded to Neutral from Outperform at Credit Suisse on valuation.

• UBS downgraded the Apartment REIT sector to Underweight and downgraded BRE Properties (NYSE: BRE), Camden Property Trust (NYSE: CPT) and Meruelo Maddux Properties (NASDAQ: MMPI) to Neutral from Buy...

OTHER DOWNGRADES:

• JP Morgan cut Moody's Corp (NYSE: MCO) to Neutral from Overweight.

• Lehman downgraded Powerwave Technologies (NASDAQ: PWAV) to Equal-Weight from Overweight.

• Goldman downgraded Target Corp (NYSE: TGT) to Neutral from Buy.

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

On today's STOP TRADING! segment on CNBC, Jim Cramer discussed the rumors making the rounds about New Century Financial Corp. (NYSE:NEW) potentially filing for Chapter 11 protection after an activist hedge fund adviser quit the board of directors. Shares were down 20% on more than 36 million shares. This has also spilled over into DJIA stocks.

Cramer said that this is a hangnail to the market and you shouldn't be selling the other unrelated stocks and sectors on this. He even said the hits that some companies took to Long Term Capital in the 1990's created a buying opportunity. Cramer has been saying that one of the sub-prime lenders will fail, but this is de-linked from the market.

On Camden Properties Trust (NYSE:CPT) Cramer sees better opportunities since REITs are up so much. He does like J.C. Penney Company, Inc. (NYSE:JCP) and he thinks it will see $84 tomorrow from $81 today.