The earnings crunch begins in earnest this coming week, with companies from Johnson & Johnson (NYSE: JNJ) and PepsiCo Inc. (NYSE: PEP) to Southwest Airlines Co. (NYSE: LUV) and Harley-Davidson Inc. (NYSE: HOG) scheduled to report results for the quarter just ended. But with the ongoing turmoil in the markets, much attention is on the tech and financial sectors. This week will provide plenty to mull over on both counts.

Wall Street expectations for tech stocks are fairly optimistic. Analysts surveyed by Thomson Financial are looking for chip maker Altera Corp. (NASDAQ: ALTR) and software/service company iGate Corp. (NASDAQ: IGTE) to be the sector's biggest earnings gainers of the week. Altera is expected to report earnings of 30 cents per share (up 33.3% from a year ago) on revenue of $355.1 million. Altera had previously forecast flat sales for the quarter, and shares fell to a 52-week low last week. iGate is expected to report earnings of 14 cents per share (up 42.9%) on revenue of $55.6 million. India-based iGate recently spun off its Mastech consulting services. Shares are down 45.0% in the past three months, and also reached a new 52-week low last week.

San Jose-based Novellus Systems Inc. (NASDAQ: NVLS), on the other hand, is expected to report that net income tumbled 90.4% from a year ago to 4 cents per share, on revenue of $245.6 million. Novellus fell to a 52-week low early last week, and shares are down 44.5% year to date.

MOST NOTEWORTHY: RF Micro Devices, QLT Inc and Everest RE Group were today's noteworthy upgrades:

• Jefferies upgraded RF Micro (NASDAQ:RFMD) to Buy from Hold citing strong proprietary Asian channel checks. The firm believes RF Micro is past the worst of the inventory handset correction in Asia and that the MPG business is also recovering.
  
• RBC Capital said QLT Inc's (NASDAQ:QLTI) risk/reward has improved and expects divestment announcements to start in late Q2. The firm raised shares to Outperform from Sector Perform.
  
• Citigroup upgraded Everest RE (NYSE:RE) to Buy from Hold citing valuation, likely buybacks, the low risk of asbestos charges and the seasonal trade ahead.

OTHER UPGRADES:

• Merriman raised Level 3 Comm (NASDAQ:LVLT) to Neutral from Sell.
  
• Zions Bancorp (NASDAQ:ZION) was upgraded to Outperform from Neutral at Baird.
  
• True Religion (NASDAQ:TRLG) was raised at Morgan Keegan to Outperform from Market Perform.

MOST NOTEWORTHY: Equitable Resources, Allied Capital and Apria Healthcare were today's noteworthy initiations:

• RBC Capital is positive on Equitable Resources' (NYSE:EQT) Appalachian Basin exposure and valuation. Shares were started with an Outperform rating and $78 target.
  
• Morgan Keegan views Allied Capital's (NYSE:ALD) valuation and outlook as attractive, starting shares with an Outperform rating.
  Credit Suisse assumed Apria Healthcare (NYSE:AHG) with a Neutral rating and $20 target, citing the challenging Medicare backdrop.

OTHER INITIATIONS:

• Keefe Bruyette initiated Zions Bancorp (NASDAQ:ZION) with a Market Perform rating and $47 target.
  
• Thomson Reuters (NASDAQ:TRIN) was started with a Sell rating at ABN Amro.
  
• Canaccord Adams initiated Cyberonics (NASDAQ:CYBX) with a Buy rating and $20.50 target.

MOST NOTEWORTHY: Alliance Imaging, Calpine and CommVault were today's noteworthy initiations:

• Stanford finds shares of Alliance Imaging (NYSE: AIQ) fairly valued and believes the company's transition to providing imaging services to hospitals from mobile imaging equipment to fixed imaging equipment will take at least several years. The firm initiated coverage with a Hold rating.
  
• Calpine (NYSE: CPN) was initiated with a Buy rating and $21.50 target at Jefferies. The firm views Calpine as a low-cost valuation generation company and expects earnings growth from its Western and Texas power plants to drive improved results.
  
• Cowen assumed CommVault (NASDAQ: CVLT) with a Neutral rating and sees limited upside to 2009 estimates due to sales and marketing investments, as well as competition.

OTHER INITIATIONS:

• UBS initiated Omrix Biopharm (NASDAQ: OMRI) with a Buy rating and $17 target.
  
• Susquehanna initiated Align Tech (NASDAQ: ALGN) with a Neutral rating.
  
• Zions Bancorp (NASDAQ: ZION) was assumed with a Neutral rating and $13 target at Baird.

MOST NOTEWORTHY: Texas Instruments, Check Point, Mobile Mini, Vineyard National Bancorp and TorreyPines were today's noteworthy downgrades:

• Jefferies downgraded shares of Texas Instruments (NYSE: TXN) to Hold from Buy, as they believe the company's fundamentals are weakening given the worse than anticipated share losses in the wireless segment. Shares were also lowered to Neutral from Overweight at JP Morgan, to Equal Weight from Overweight at Lehman, to Neutral from Outperform at Credit Suisse, and to Neutral from Buy at UBS to reflect the slowdown in the company's wireless growth.
  
• Check Point Software (NASDAQ: CHKP) was downgraded to Hold from Buy at Jefferies on valuation and highlights the difficult spending environment in 1H08 as well as the company's tough comps.
  
• Deutsche Bank downgraded shares of Mobile Mini (NASDAQ: MINI) to Hold from Buy following the company's negative preannouncement.
  
• Oppenheimer lowered Vineyard National Bancorp (NASDAQ: VNBC) to Neutral from Buy to reflect slower pace of balance sheet growth and lower gain-on-sale income estimates.
  
• JMP Securities downgraded TorreyPines (NASDAQ: TPTX) to Market Outperform from Strong Buy and said Tezampanel's lack of dose response and statistically significant pain free response will keep the stock in the "show me" category.

OTHER DOWNGRADES:

• JP Morgan downgraded ConocoPhillips (NYSE: COP) to Underweight from Neutral and Marathon Oil Corporation (NYSE: MRO) to Neutral from Overweight.
  
• UBS downgraded Zions Bancorporation (NASDAQ: ZION) to Neutral from Buy.
  
• Citigroup downgraded Kellogg Company (NYSE: K) to Hold from Buy.
  
• ThinkEquity downgraded ValueClick (NASDAQ: VCLK) to Source of Funds from Buy.