Analyst Upgrades

• Tiffany (TIF) to outperform from perform at Oppenheimer.
• Kellogg (K) to outperform from market perform at Wells Fargo.
• Citizens Republic (CRBC) to outperform from market perform at FBR Capital.
• Research in Motion (RIMM) to equal weight from underweight at Morgan Stanley.
• MWI Veterinary Supply (MWIV) and Elster (ELT) to overweight from neutral at Piper Jaffray.
• Paetec Holding (PAET) and Patterson-UTI Energy (PTEN) to buy from hold at Citigroup.
• New Gold (NGD) to outperform from market perform at BMO Capital.
• Aviat Networks (AVNW) to buy from hold at Needham.
• Abiomed (ABMD) to buy from hold at Jefferies.
• Animal Health (AHII) to outperform from neutral at RW Baird.
• PNM Resources (PNM) to overweight from neutral at JPMorgan.

If your heart fails, Danvers, Mass.-based Abiomed (ABMD) says that it has the tools to take over the pumping function. The medical device maker, which makes blood pumps, catheters and sensors, recently got one of its products approved -- the Impella 2.5 -- and analysts and Abiomed are hoping that this tool will be the key to the company's success.

The Impella 2.5 is supposed to take over all the heart's pumping activity after a heart failure. By doing this, blood can continue to flow throughout the body while the heart rests and heals. The Impella 2.5 can pump 2.5 liters of blood flow per minute -- about half of what the heart pumps. That makes it a useful product for procedures, such as an angioplasty, by enhancing the blood flow during the procedure, thereby reducing the chances of any damage being done to the heart.

Analyst upgrades:

• Keefe Bruyette upgraded Affiliated Managers Group (NYSE: AMG) to Market Perform from Outperform to reflect the rebound in equity and fixed income markets as well as an attractive risk/reward profile. The firm raised its target on shares to $72 from $61.
• Jefferies upgraded AGCO Corp. (NYSE: AGCO) to Buy from Hold as it believes equipment sales in Brazil are holding up better than expected and farm stimulus should set a floor in sales. The firm raised its target on shares to $36 from $25.
• Deutsche Bank upgraded ArcelorMittal (NYSE: MT) to Buy from Hold to reflect reduced balance sheet risk and a more positive view on the steel sector. The raised its target on shares to $42 from $23
• Yahoo! (NASDAQ: YHOO) was upgraded to Buy from Hold at Citigroup.
• Synovus (NYSE: SNV) was raised to Buy from Neutral at SunTrust.
• First American (NYSE: FAF) was lifted to Overweight from Equal Weight at Stephens.

Analyst upgrades:

• Jefferies upgraded Abiomed (NASDAQ: ABMD) to Hold from Underperform on valuation as it believes concerns over the company's Impella heart pump are priced in at current levels. The firm lowered its target price to $7 from $8.
  
• Suntrust upgraded Somanetics (NASDAQ: SMTS) to Neutral from Reduce. The firm believes most of the risk is out of Somanetics shares and that the Q1 report could be a positive catalyst.
  
• Banc of America/Merrill upgraded shares of Telecom Italia (NYSE: TI) to Buy from Neutral on valuation and believes the company's revenue trends are improving.
• China Petroleum & Chemical (NYSE: SNP) was raised to Buy from Neutral at UBS.
• Hexcel (NYSE: HXL) and Johnson Controls (NYSE: JCI) were upgraded to Buy from Neutral at Goldman.

Analyst upgrades:

• KeyBanc upgraded Epicor (NASDAQ: EPIC) to Buy from Hold based on several near-term catalysts that include possible convertible debt repurchases, reasonable Q4 results, a proxy fight, and a boost from the Epicor 9 product cycle in 2H09.
  
• KeyBanc also upgraded AK Steel (NYSE: AKS) to Buy from Hold based on relative valuation and said the company could benefit from lower iron ore, scrap natural gas, and labor inputs.
  
• JP Morgan upgraded Lennar (NYSE: LEN) to Overweight from Neutral based on relative valuation.
• Marriott (NYSE: MAR) was upgraded to Buy from Neutral at Goldman.
  
• Raymond James (NYSE: RJF) was raised to Market Perform from Underperform at Wachovia.
  
• Deere (NYSE: DE) was upgraded to Outperform from Market Perform at Bernstein.

Analyst downgrades:

MOST NOTEWORTHY: Abercrombie & Fitch, China Unicom and Toronto Dominion were today's noteworthy downgrades:

• Friedman Billings downgraded Abercrombie & Fitch (NYSE: ANF) to Market Perform from Outperform citing soft comps which could impact EPS expectations in 2H08 and SG&A investing.
  
• China Unicom (NYSE: CHU) was downgraded to Neutral from Outperform at Credit Suisse and to Equal Weight from Overweight at Morgan Stanley as the company's phone asset sales garnered a lower-than-expected price.
  
• RBC Capital downgraded Toronto Dominion (NYSE: TD) to Sector Perform from Outperform citing expense initiatives in domestic retail banking which are hurting operating leverage, loan losses in U.S. banking, and muted capital markets revenues.

OTHER DOWNGRADES:

• William Blair cut Littelfuse (NASDAQ: LFUS) to Market Perform from Outperform.
  
• Linear Tech (NASDAQ: LLTC) was downgraded at UBS to Neutral from Buy.
  
• Abiomed (NASDAQ: ABMD) was lowered to Neutral from Positive at Susquehanna.

MAJOR PAPERS:

• While United Parcel Service (NYSE: UPS) is preparing for the busiest time of the year, high costs and a slowing economy are set to present big challenges for the Atlanta company once the holiday season is over, the Wall Street Journal reported.

OTHER PAPERS:

• BusinessWeek's "Inside Wall Street" column reported that shares of Abiomed Inc (NASDAQ: ABMD) have recovered nearly to its 52-week high of $15, rallying on buzz that the FDA could approve the company's chief product, Impella, a miniature pump at the end of a catheter, within 12 months.
• The "Inside Wall Street" column also reported that Focus Media Holding Limited (NASDAQ: FMCN), the top advertising company in Internet, Mobile and Poster/Panel Markets, should benefit from the 2008 Summer Olympics.

WEB SITES:

• According to sources and reported by AppleInsider, there have been additional sightings of an "unfamiliar MacBook model floating around" Apple Inc's (NASDAQ: AAPL) campus perhaps indicating a new Macbook is coming at next month's Macworld Expo.