Analyst Upgrades

• Deutsche Bank upgraded Southern Copper (SCCO) to buy from hold to reflect valuation and positive near-term catalysts. The firm raised its target for shares to $38 from $35.
• JMP Securities upgraded Ultimate Software (ULTI) to outperform from market perform. The firm cites the company's expanding employee base for the upgrade. The firm has a $40 target on the stock.
• Piper Jaffray upgraded Aeropostale (ARO) to neutral from underweight following the company's Q4 results and raised its target for shares to $31 from $24.
• Kennametal (KMT) was upgraded to sell from conviction sell at Goldman.
• Lifetime Brands (LCUT) was upgraded to outperform from market perform at Barrington.
• Volvo (VOLVY) was upgraded to overweight from underweight at JPMorgan.

Looking back at the history of high technology, there are countless examples of hyper-growth companies that eventually faded into nothingness. Examples include WordPerfect, Wang, DEC and on and on.

Yes, it's life in the tech fast lane.

And, this week we got some more road kill: Silicon Graphics (SGI) sold out to Rackable Systems (NASDAQ: RACK) for a measly $25 million.

Founded in 1982, SGI quickly found its growth groove. Then again, the company's mastermind was James Clark (who eventually went on to create companies like Netscape).

Results for the tech stocks in last week's preview were a mixed bag, some beats, some misses, some in line. By and large, expectations for tech companies reporting results this week remain high, though. Here's what analysts surveyed by Thomson Financial are anticipating in the way of earnings, as compared to the same period of the previous year.

• Solarfun Power Holdings Co. Ltd. (NASDAQ: SOLF): $1.48 EPS (+73.0%) on sales of $1.3 billion (+171.0%)
• Marvell Technology Group Ltd. (NASDAQ: MRVL): $0.21 EPS (+71.4%) on sales of $836.7 million (+27.4%)
• Solera Holdings Inc. (NYSE: SLH): $0.29 EPS (+51.7%) on sales of $137.0 million (+11.8%)
• Applied Signal Technology Inc. (NASDAQ: APSG): $0.14 EPS (+42.9%) on sales of $46.4 million (+17.4%)
• China Finance Online Co. Ltd. (NASDAQ: JRJC): $0.14 EPS (+42.6%) on sales of $13.3 million (+131.5%)
• OSI Systems Inc. (NASDAQ: OSIS): $0.38 EPS (+36.8%) on sales of $162.0 million (+6.0%)
• LaBarge Inc. (AMEX: LB): $0.27 EPS (+33.3%) on sales of $71.6 million (+10.4%)
• Esterline Technologies Corp. (NYSE: ESL): $0.69 EPS (+11.6%) on sales of $374.6 million (+14.8%)
• Dell Inc. (NASDAQ: DELL): $0.36 EPS (+11.1%) on sales of $15.9 billion (+7.8%)
• HEICO Corp. (NYSE: HEI): $0.46 EPS (+13.0%) on sales of $147.1 million (+10.5%)
• Daktronics Inc. (NASDAQ: DAKT): $0.17 EPS (flat) on sales of $141.5 million (+17.0%)
• Novell Inc. (NASDAQ: NOVL): $0.05 EPS (flat) on sales of $241.4 million (-0.7%)
• Omnivision Technologies Inc. (NASDAQ: OVTI): $0.29 EPS (-17.1%) on sales of $172.5 million (-0.4%)
• Sigma Designs Inc. (NASDAQ: SIGM): $0.39 EPS (-18.8%) on sales of $58.7 million (+37.9%)