• Oppenheimer upgraded AmerisourceBergen (NYSE:ABC) to Outperform from Perform on the company's strong branded drug price inflation, potential for greater than expected buybacks, and their belief that prescription volume growth will stabilize after Q1. The firm raised their target to $45 from $36.
  
• Baird upgraded Ecolab (NYSE:ECL) to Outperform from Neutral based on valuation following reaffirmed guidance.
  
• Goldman removed shares of Dollar Tree (NASDAQ:DLTR) from its Conviction Sell List and upgraded it to Neutral from Sell based on valuation.
• Teppco Partners (NYSE:TPP) was upgraded to Outperform from Market Perform at Wachovia.
  
• Barrick Gold (NYSE:ABX) was raised to Buy from Hold at Canaccord.
  
• Coca Cola Femsa (NYSE: KOF)) was upgraded at Morgan Stanley to Overweight from Equal Weight.

• RBC Capital downgraded Apple (NASDAQ:AAPL) shares to Underperform from Sector Perform and lowered their target to $70 from $125 following the announcement that CEO Steve Jobs is taking a medical leave of absence. The analyst expects shares to be pressured by reduced earnings growth expectations and near-term leadership uncertainty.
  
• Barclays downgraded Motorola (NYSE:MOT) to Equal Weight from Overweight as they do not expect handset recovery for at least 6 to 9 months.
  
• Banc of America/Merrill downgraded Shire (NASDAQ:SHPGY) to Underperform from Buy based on earnings risk from the upcoming generic launch of Adderall XR.
• Royal Caribbean (NYSE:RCL) was added to Goldman's Conviction Sell List.
  
• Starent Networks (NASDAQ:STAR) and Ceragon Networks (NASDAQ:CRNT) were downgraded to Equal Weight from Overweight at Barclays.
  
• Casella Waste (NASDAQ:CWST) was lowered at JP Morgan to Neutral from Overweight.

• Citigroup initiated Cliffs Natural (NYSE:CLF) with a Buy rating and $43 target. The firm believes the company's multi-tier North American contract sales arrangements should allow it weather the volatility in the spot and seaborne markets and the firm expects volumes to improve in Q2.
  
• ING started Arcelor Mittal (NYSE:MT) with a Sell rating and believes the economic slowdown will have a greater than expected impact on the steel industry.
  
• Friedman Billings believes weakness in M&T Bank's (NYSE:MTB) regional economy could hinder the company's growth prospects and the firm is concerned about the bank's concentration in commercial and industrial loans. The firm has an Underperform rating and $30 target on the stock.
• S&T Bancorp (NASDAQ:STBA) was initiated with a Market Perform rating at Keefe Bruyette.
  
• RBC Capital initiated Norfolk Southern (NYSE:NSC) with a Sector Perform rating and $61 target.

Analyst upgrades:

• Deutsche Bank upgraded shares of UBS (NYSE: UBS) to Buy from Hold following the company's Q3 update as they believe the quarter marks a turning point.
• Merill raised BP Plc (NYSE: BP) and Total SA (NYSE: TOT) to Neutral from Underperform.
• DISH Network (NASDAQ: DISH) was lifted to Hold from Sell at Soleil.
  
• Friedman Billings upgraded Sovereign Bancorp (NYSE: SOV) to Market Perform from Underperform as they believe the company's deposits are showing stability despite the massive sell-off.
  
• Kaufman Bros. raised Longtop Financial (NYSE: LFT) to Buy from Hold on valuation as they believe Chinese software service stocks now reflect the investment risks.
• Lear (NYSE: LEA) was upgraded to Hold from Sell at Citigroup.

• Morgan Stanley downgraded eBay (NASDAQ: EBAY) to Equal Weight from Overweight citing checks that indicate deteriorating trends are worst than expected.
  
• Juniper (NASDAQ: JNPR) and Pediatrix Medical (NYSE: PDX) were downgraded to Market Perform from Outperform at Morgan Keegan.
  
• Merrill cut StatoilHydro (NYSE: STO) to Underperform from Neutral.
  
• HSBC (NYSE: HBC) was lowered to Market Perform from Outperform at Keefe Bruyette.

Here are some highlights from this past week's earnings coverage from BloggingStocks:

• Bed Bath & Beyond Inc. (NASDAQ: BBBY) Q1 earnings tumbled while revenues rose.
• Casella Waste Systems Inc. (NASDAQ: CWST) posted a narrower-than-expected Q4 loss.
• CKE Restaurants Inc. (NYSE: CKR) Q1 earnings increased but its revenue slipped.
• Darden Restaurants Inc. (NYSE: DRI) swung to a Q4 profit on strong sales at Olive Garden.
• Ericsson (NASDAQ: ERIC) said it might not see Q2 profit growth on lower demand and shipping delays.
• General Mills Inc. (NYSE: GIS) Q4 earnings declined but were in line with expectations.
• Gerber Scientific Inc. (NYSE: GRB) reported solid Q4 and full-year results that pleased investors.
• IHS Inc. (NYSE: IHS) beat Q2 expectations and posted record quarterly cash flow from operations.
• Jabil Circuit Inc. (NYSE: JBL) stronger-than-expected Q3 results led to an analyst's upgrade.
• KB Home (NYSE: KBH) widened its Q2 loss due to weak sales and falling prices.
• Kroger Co. (NYSE: KR) beat Q1 expectations as consumers sought discounts on food and gas.
• Monsanto Co. (NYSE: MON) beat Q3 earnings estimates but fell short of revenue estimates.
• Nike Inc. (NYSE: NKE) posted better-than-expected Q4 results boosted by international strength.
• Oracle Corp. (NASDAQ: ORCL) posted strong Q4 results that topped analysts' expectations (see transcript).

Casella Waste Systems (NASDAQ: CWST) is an integrated regional solid waste services company that provides collection, transfer, disposal, recycling and resource management services to residential, industrial and commercial customers, primarily in the eastern United States. The firm owns and/or operates 38 solid waste collection businesses, 38 recycling facilities, 32 transfer stations, 11 subtitle D landfills, two landfills permitted to accept construction materials, and one waste-to-energy power generation facility. Casella also has a 50% stake in GreenFiber, a joint venture with Louisiana-Pacific (NYSE: LPX) that produces cellulose insulation.

The company surprised the Street last week, when it reported Q4 revenues of $139.6 million and a loss of 18 cents per share. Analysts had been expecting $137.7 million and a loss of 22 cents. Management also guided FY09 revenues to $610-$628 million, versus consensus of $605.67 million.