Analyst upgrades:

• Goldman upgraded Applied Materials (NASDAQ: AMAT) to Buy from Sell and added shares to its Conviction Buy List citing valuation. The firm also upgraded the Semiconductor Capital Equipment Sector to Attractive.
  
• Morgan Keegan believes Cisco Systems (NASDAQ: CSCO) will emerge from the slowdown as a stronger company with greater market share and expansion into adjacent markets. Shares were upgraded to Outperform from Market Perform.
• Pfizer (NYSE: PFE) was upgraded to Overweight from Equal Weight at Barclays.
  
• Daimler (NYSE: DAI) was upgraded at UBS to Neutral from Sell.
• Friedman Billings upgraded Mariner Energy (NYSE: ME) to Market Perform from Underperform on valuation and the company's upcoming catalysts in the deepwater GOM.
• Swiss Reinsurance (OTC: SWCEY) was raised to Buy from Hold at Citigroup.

• Intel (NASDAQ: INTC) was downgraded to Neutral from Buy at Goldman.
• Deutsche Bank cut Hess Corp (NYSE: HES) and Marathon Oil (NYSE: MRO) to Hold from Buy and Suncor (NYSE: SU) and ConocoPhillips (NYSE: COP) to Sell from Hold after cutting their oil price forecast for 2009 to $60/bbl and 2010 to $58/bbl.
  
• Merrill downgraded Akzo Nobel (OTC: AKZOY) to Neutral from Buy on expectations the company's coatings end markets will worsen and chemicals division will see pressure next year.
• Monster (NASDAQ: MNST) was lowered at Citigroup to Hold from Buy.

MOST NOTEWORTHY: BP Plc, Swiss Reinsurance and A. Schulman were today's noteworthy upgrades:

• Morgan Stanley upgraded shares of BP Plc (NYSE: BP) to Overweight from Equal Weight as they believe the company is at an inflection and net income should grow 22% in 2009.
  
• UBS upgraded Swiss Reinsurance (OTC: SWCEY) to Neutral from Sell on the company's balance sheet, which they believe is solid, but still sees material risk to consensus estimates.
  
• KeyBanc upgraded shares of A. Schulman (NASDAQ: SHLM) to Buy from Hold as they believe the new CEO has had a significant positive impact and that downside is limited from current levels.

OTHER UPGRADES:

• NASDAQ OMX Group (NASDAQ: NDAQ) was raised to Buy from Neutral at Piper.
  
• Ashland (NYSE: ASH) was upgraded to Neutral from Underweight at JP Morgan.
  
• BMO Capital upgraded Regal Entertainment (NYSE: RGC) to Outperform from Market Perform.
  
• Goldman upgraded Northrop Grumman (NYSE: NOC) to Neutral from Sell.

MAJOR PAPERS:

• Last December Chemtura Corporation (NYSE: CEM), a specialty chemicals company with a market cap of about $1.9B, said it might sell itself, and now The Blackstone Group LP (NYSE: BX) and Apollo Management are in talks to buy the company, the Wall Street Journal reported.
• In part one of a series to help explain the reasons why The Bear Stearns Companies (NYSE: BSC) collapsed, the Wall Street Journal said that the troubled firm was torn apart by executives who couldn't agree on what course to take, including raising capital and slicing mortgage and related bonds from its inventory. And each of about six attempts to raise capital fell part.

• The American investor and Berkshire Hathaway Inc (NYSE: BRK.A) chief Warren Buffett said the United States is already in a recession that is deeper and will last longer than the public expects, the Economic Times reported.
• According to the Telegraph, Barclays Plc (NYSE: BCS) is planning to sell Barclays Life Assurance Company, its life assurance arm, which has over GBP7B of funds under management. Sources believe potential bidders for the unit may include Pearl, Swiss Reinsurance Company (OTC: SWCEY), General Re, Canada Life and XL Re. Market commentators believe that on an embedded value basis, the unit is currently valued at around GBP1B.

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

• American International Group Inc. (NYSE: AIG) posted a big loss and warned of more to come.
• CBS Corp. (NYSE: CBS) beat expectations even though its fourth-quarter profit fell.
• DreamWorks Animation Inc. (NYSE: DWA) 2007 earnings and revenue soared, lifted by Shrek the Third.
• HJ Heinz Co. (NYSE: HNZ) posted solid third-quarter earnings and revenue.
• Koppers Holdings Inc. (NYSE: KOP) beat fourth-quarter expectations and approved a share buyback plan.
• Netflix Inc. (NASDAQ: NFLX) raised its first-quarter and full-year guidance on subscriber growth.
• Nortel Networks Corp. (NYSE: NT) missed expectations due to rising operating costs.
• Origin Agritech Ltd. (NASDAQ: SEED) 2007 earnings sank, missing analysts' expectations.
• Salesforce.com Inc. (NYSE: CRM) beat fourth-quarter estimates and offered revised guidance.
• Sirius Satellite Radio Inc. (NASDAQ: SIRI) narrowed its loss due to a surge in subscribers.
• Swiss Reinsurance Co. (OTC: SWCEY) quarterly EPS plunged but 2007 decline was less than expected.
• Viacom Inc. (NYSE: VIA) reported strong fourth-quarter and full-year results.

Also, analysts predict that bank losses will be the highest in 20 years. Timothy Sykes recommends investors not become starstruck by superstar companies such as Apple Inc. (NASDAQ: AAPL) and Google Inc. (NASDAQ: GOOG).

Upcoming results to watch for include Staples, Inc. (NASDAQ: SPLS), Costco Wholesale (NASDAQ: COST), and Blockbuster Inc. (NYSE: BBI).

Visit AOL Money & Finance for more earnings coverage.

MOST NOTEWORTHY

• Jefferies upgraded shares of Thornburg Mortgage Inc Corp (NYSE: TMA) to Buy from Hold as they believe the stock is at an inflection point, characterized by accelerated earnings and dividend growth.
• Expedia Inc (NASDAQ: EXPE) was upgraded to Outperform from Neutral at Credit Suisse, as they believe the company is well-positioned to benefit from global e-travel and media opportunities, strong free cash flow, and attractive valuation.
• Perot Systems Corporation (NYSE: PER) was upgraded to Sector Perform from Underperform at RBC Capital following its Q4 report.

• HSBC raised Swiss Reinsurance Company (OTC: SWCEY) to Overweight from Neutral.
• The Estee Lauder Companies Inc (NYSE: EL) was upgraded to Equal Weight from Underweight at Lehman.
• Cantor upgraded Genomic Health Inc (NASDAQ: GHDX) to Buy from Hold.