Analyst Upgrades

• TCF Financial (TCB) to buy from hold at Deutsche Bank.
• Exelon (EXC) to market perform from underperform at Wells Fargo.
• Nvidia (NVDA) and Boyd Gaming (BYD) upgraded to overweight from equal weight at Barclays.
• Estee Lauder (EL) to buy from neutral at UBS.
• Webster Financial (WBS) to buy from hold at Jefferies.
• Skilled Healthcare (SKH) to outperform from market perform at Morgan Keegan.
• Acorda Therapeutics (ACOR) to outperform from market perform at Leerink.
• NCR Corp. (NCR) to outperform from neutral at Wedbush.
• Barnes & Noble (BKS) to neutral from underperform and Pioneer Natural (PXD) to outperform from neutral at Credit Suisse.
• Autodesk (ADSK) to buy from neutral at Goldman.

Solarfun Power Holdings (SOLF - option chain) shares are rising today after the company announced Q2 earnings this morning, posting a profit of $40.2 million, or 11 cents per share. Excluding one-time items, SOLF earned 59 cents per share on revenue of $258.5 million. Analysts had forecast a profit of 25 cents per share on revenue of $212.8 million. Also helping the stock was news that South Korea-based Hanwha Chemical has agreed to take a 49.99% stake in the company, worth about $370 million. If you think that the stock won't fall by too much in the coming months, then now could be a good time to look at a bullish hedged trade on SOLF.

SOLF opened this morning at $12.30. So far today the stock has hit a low of $10.87 and a high of $12.30. As of 12:30, SOLF is trading at $10.97 up 0.72 (7.0%). The chart for SOLF looks neutral and S&P gives SOLF a neutral 3 STARS (out of 5) hold ranking.

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%)

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

• Activision Inc. (NASDAQ: ATVI) beat Q4 expectations and raised its fiscal 2009 guidance.
• Air France-KLM swung to a loss in the fourth quarter and warned of tough times ahead.
• BJ's Wholesale Club (NYSE: BJ) Q1 earnings soared, beating expectations, and it raised its forecast.
• Canadian Solar Inc. (NASDAQ: CSIQ) beat Q1 estimates on robust demand and favorable exchange rates.
• Foot Locker Inc. (NYSE: FL) Q1 profit declined, hurt by an impairment charge and nearly flat sales.
• Gap Inc. (NYSE: GPS) beat Q1 earnings estimates by managing costs and inventory.
• Home Depot Inc. (NYSE: HD) Q1 earnings tumbled on a one-time charge and the housing slump.
• Intuit Inc. (NASDAQ: INTU) beat Q3 expectations and announced a share buyback program.
• Lenovo Group Ltd. (OTC: LNVGY) Q4 earnings more than doubled on strong global distribution.
• Lowe's Companies Inc. (NYSE: LOW) reported a so-so first quater in line with Wall Street expectations.
• NetEase.com Inc. (NASDAQ: NTES) Q1 earnings declined due to increased tax burden.
• Saks Inc. (NYSE: SKS) missed Q1 earnings estimates but beat revenue expectations.
• Solarfun Power Holdings Co. (NASDAQ: SOLF) Q1 revenue surged 529% from the previous quarter.
• Suntech Power Holdings Co. (NYSE: STP) Q1 revenues soared and earnings more than doubled.

Additional earnings highlights:
Hewlett-Packard, Target, Barnes & Noble, Campbell, Staples and others
Ford, Hormel, Limited Brands, Intuitive Surgical, PetSmart and others

Upcoming results to watch for include Borders (NYSE: BGP), Polo Ralph Lauren (NYSE: RL), TiVo (NASDAQ: TIVO), Big Lots (NYSE: BIG), Costco (NASDAQ: COST), Dell (NASDAQ: DELL), HJ Heinz (NYSE: HNZ), Sears (NASDAQ: SHLD), Lions Gate (NYSE: LGF), and Tiffany (NYSE: TIF).

Visit AOL Money & Finance for more earnings coverage.

Suntech Power Holdings Co. (NYSE: STP), which saw its stock surge some 150% in 2007, didn't have such a good 2008 so far with its stock plunging about 44% year-to-date. But since setting a 52-week low of $28.19 on March 22, the stock has rebounded nicely, up over 55%. Roller coaster or what?!

Well, today, the maker of photovoltaic cells and modules said first-quarter earnings more than doubled on 76% higher revenue. Earnings reached $55.8 million, or 33 cents an American depositary share, beating analysts estimates of 28 cents. Revenue reached $434.5 million. Gross margins also expanded nicely and Suntech reiterated revenue estimates for 2008.

Early in the morning, STP shares jumped over 7% in premarket trading in response to the report but have not kept this up. Shares are now trading at $45.73, down over 1%, probably declining with the rest of the sector following Goldman Sachs's downgrade of Solarfun (NASDAQ: SOLF) to Sell from Neutral. SOLF shares are down over 18% taking LDK Solar (NYSE: LDK), Trina Solar (NYSE: TSL) and Canadian Solar (NASDAQ: CSIQ) down with it -- 5%, 8% and 13% respectively, to name but a few.

MOST NOTEWORTHY: The medical supplies and devices sector, East West Bancorp, Tempur Pedic and AbitibiBowater were today's noteworthy initiations:

• Credit Suisse initiated the medical supplies and devices sector with a Market Weight rating and started shares of Edwards Lifesciences (NYSE: EW) and Becton, Dickinson and Co (NYSE: BDX) with Outperform ratings and Medtronic (NYSE: MDT) and Boston Scientific (NYSE: BSX) with Neutral ratings.
  
• East West Bancorp (NASDAQ: EWBC) was initiated with a Buy rating and $36 target at B. Riley; the firm's target implies a 23.1% potential total return over the next twelve months including the stock's 1.35% dividend yield.
  
• Tempur Pedic (NYSE: TPX) was started with an Outperform rating at William Blair, as they find the current valuation attractive for long-term investor given the company's strong position in the specialty sleep products.
  
• Deutsche Bank resumed coverage of AbitibiBowater (NYSE: ABH) with a Hold rating and $29 target, citing the strength of the Canadian dollar and difficult newsprint fundamentals.

OTHER INITIATIONS:

• Banc of America initiated shares of JA Solar (NASDAQ: JASO) and Trina Solar (NYSE: TSL) with Buy ratings and targets of $73 and $76, and initiated Horizon Lines (NYSE: HRZ) and Solarfun Power (NASDAQ: SOLF) with Neutral ratings and targets of $34 and $14.