The earnings crunch is on. Among the many companies scheduled to report quarterly results this week are such so-called bellwether stocks as Amazon.com Inc. (NASDAQ: AMZN), Caterpillar Inc. (NYSE: CAT), Coca-Cola Co. (NYSE: KO), DuPont (NYSE: DD), and United Parcel Service Inc. (NYSE: UPS), all of which analysts surveyed by Thomson Reuters expect to report lower earnings for the recent quarter. Altria Group Inc. (NYSE: MO), McDonald's Corp. (NYSE: MCD), and Raytheon Co. (NYSE: RTN), on the other hand, are expected to post marginal earnings growth.

Among all the negative economic data that came out last week was a positive surprise: retail sales were higher in January. A fluke or a glimmer at the end of the tunnel? That may depend on whether we see any positive surprises arising from items on this week's economic calendar:

• Consumer Analyst Group of New York Conference: Monday through Friday
• NY Empire Manufacturing Index (Feb. 2009): Tuesday, 8:30 AM
• NAHB Housing Market Index (Feb. 2009): Tuesday, 1:00 PM
• Fed's Bullard speaks before National Association of Business Economists: Tuesday, 1:00 PM
• Housing starts (Jan. 2009): Wednesday, 8:30 AM
• Fed's Pianalto speaks before Commercial Developers Power Breakfast: Wednesday, 9:00 AM
• Industrial production (Jan. 2009): Wednesday, 9:15 AM
• Fed's Bernanke speaks before National Press Club Luncheon: Wednesday, 12:30 PM

• Axys Tech (NASDAQ: AXYS) was upgraded to Buy from Hold at Morgan Joseph based on valuation.
  
• Elizabeth Arden (NASDAQ: RDEN) was upgraded to Buy from Hold at Wedbush on valuation and the success of the company's Viva La Juicy launch.

• Keefe Bruyette downgraded Greenhill & Co. (NYSE: GHL) and Evercore Partners (NYSE: EVR) to Market Perform from Outperform on valuation and lowered its estimates to reflect slower than initially expected M&A advisory transactions. Greenhill's target was lowered to $66 from $72 and Evercore's was cut to $14.50 from $16.
  
• Collins Stewart downgraded shares of Thermage (NASDAQ: THRM) to Hold from Buy following the Reliant acquisition to reflect integration and balance sheet concerns.

• Roth Capital views American Oriental (NYSE: AOB) as a cash-rich, multi-faceted pharmaceutical company that is well equipped to handle unforeseen changes in China's Health care market. Shares were initiated with a Buy rating and $10 target.
  
• Jesup & Lamont believes Bristow Group (NYSE: BRS) is well positioned in current downturn as the majority of its business is in production platforms and drilling rigs. The firm started shares with a Buy rating and $37 target.
  
• Barrington initiated BWAY Holding (NYSE: BWY) with an Outperform rating and $9 target. The firm believes the company is an early cycle business that should benefit from cost reduction activity.
• Grand Canyon (NASDAQ: LOPE) was assumed with a Buy rating and $21 target at Piper Jaffray.

Analyst upgrades:

• Axys Tech (NASDAQ: AXYS) was upgraded to Outperform from Market Perform at Morgan Keegan on valuation.
  
• Credit Suisse upgraded Cemex (NYSE: CX) to Neutral from Underperform following the company's refinancing announcement.
  
• Patni Computer (NYSE: PTI) was upgraded to Buy from Neutral at UBS.

• Merriman downgraded Environmental Power (NASDAQ: EPG) to Neutral from Buy citing a lack of visibility into the company's capital raise and lowered their estimates to reflect a slippage in project schedules.
  
• Jefferies cut inVentiv Health (NASDAQ: VTIV) to Hold from Buy as they believe budget cuts at the company's client base make 2009 estimates too high. The firm lowered their target to $11 from $15.
  
• Oppenheimer downgraded RSC Holdings (NYSE: RRR) to Perform from Outperform to reflect the continued deterioration in non-residential construction and valuation following the recent rally.
• Smurfit-Stone (NASDAQ: SSCC) was lowered to Hold from Buy at Deutsche Bank.
  
• Distribucion Y Servicio (NYSE: DYS) was downgraded to Sell from Hold at Deutsche Bank.
  
• Key Energy (NYSE: KEG) was downgraded at SMH Capital to Neutral from Accumulate.

• AECOM Technology (NYSE: ACM) was initiated with an Outperform rating and $34 target at Baird. The firm is positive on AECOM's diverse portfolio of services and global reach.
  
• Baird also initiated Checkpoint (NYSE: CKP) with a Neutral rating and $11 target, citing the weak macro environment.
  
• Thomas Weisel said Integra LifeSciences (NASDAQ: IART) has little exposure to economically sensitive areas of healthcare and has a varied mix of products that provide a platform for sustainable organic growth. Shares were initiated with an Overweight rating.
• Piper Jaffray assumed CBS Corp (NYSE: CBS) with a Neutral rating.
  
• BioMarin (NASDAQ: BMRN) was started at Stanford with a Hold rating.
  
• Websense (NASDAQ: WBSN) was initiated with an Equal Weight at First Analysis.

• Goldman upgraded Nokia (NYSE: NOK) to Neutral from Sell on valuation and believes the company's guidance is realistic.
  
• SMH Capital upgraded GMX Resources (NASDAQ: GMXR) to Accumulate from Neutral and is positive on the company's capex reduction.
  
• Wachovia raised Nationwide Health Services (NYSE: NHP) to Outperform from Market Perform to reflect the company's diversified portfolio and "solid" capital position.
• Portugal Telecom (NYSE: PT) was upgraded to Equal Weight from Underweight at Morgan Stanley.
  
• Omnicare (NYSE: OCR) was upgraded to Buy from Hold at Soleil.
  
• SKF AB (OTC: SKFRY) was upgraded at JP Morgan to Neutral from Underweight.

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

• Axsys Technologies Inc. (NASDAQ: AXYS) beat estimates for the fourth quarter and raised its guidance.
• Deli Inc. (NASDAQ: DELL) missed expectations for the fourth quarter despite its move into retail outlets.
• Goldman Sachs Group Inc. (NYSE: GS) is lowering expectations for the quarter just ended.
• Home Depot Inc. (NYSE: HD) missed expectations, dragged down by the housing slump.
• Lowe's Cos. Inc. (NYSE: LOW) beat low expectations though profit fell due to the housing slump.
• Nordstrom Inc. (NYSE: JWN) beat estimates, though earnings and revenue fell.
• Office Depot Inc. (NYSE: ODP) fourth-quarter profits sank, falling short of Wall Street expectations.
• RadioShack Corp. (NYSE: RSH) beat expectations as lower operating costs offset lower same-store sales.
• Sears Holdings Corp. (NASDAQ: SHLD) missed estimates as both earnings and revenue fell.
• Sprint Nextel Corp. (NYSE: S) posted a fourth-quarter loss on acquistions-related write-downs.
• Toll Brothers Inc. (NYSE: TOL) swung to a $96 million loss, another victim of the housing slump.

Also, analysts predict that bank losses will be the highest in 20 years. See Jim Cramer's take on Lowe's and Nordstrom results. 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.

Axsys Technologies (NASDAQ: AXYS) designs and develops high performance surveillance cameras, imaging systems and related motion control technologies, serving the aerospace, defense, and high-performance commercial markets. Applications include airborne thermal targeting, missile tracking, space-borne surveillance and semiconductor micro-inspection. The Department of Defense, Boeing (NYSE: BA) and Intel (NASDAQ: INTC) are among the firm's major customers.

The company surprised the Street last week, when it reported Q4 EPS of 36 cents and revenues of $47.9 million. Analysts had been looking for 33 cents and $45.7 million. Management also guided FY08 EPS to $1.70-$1.75 ($1.63 consensus) and FY08 revenues to $208-$212 million ($198.96M consensus). Stifel Nicolaus subsequently reiterated its "buy" recommendation and boosted its price target to $54.