So, the unemployment rate sank below 9% in February, but investors didn't seem to be impressed by that. The Dow, Nasdaq and S&P 500 all fell on Friday over concerns about how the ongoing unrest in the Middle East might affect energy prices, and thus the economic recovery.

Will this coming week's economic calendar offer anything likely to bring excitement to the markets? Here's what's on tap:

• Monday: Consumer credit numbers for January
• Tuesday: Weekly chain store sales, TIPP Economic Optimism Index

Analyst Upgrades

• Yingli Green (YGE) to outperform from market perform at Wells Fargo.
• National Semiconductor (NSM) to outperform from market perform at FBR Capital.
• DuPont (DD) to buy from hold at Citigroup.
• Blackboard (BBBB) to overweight from neutral at JPMorgan.
• Kindred Healthcare (KND) to buy from hold at Jefferies.
• Peabody Energy (BTU) to outperform from market perform at BMO Capital.
• Savvis (SVVS) to buy from neutral and InterActiveCorp (IACI) to neutral from underperform at BofA/Merrill.

Analyst Upgrades

• DuPont (DD) was upgraded to buy from neutral at Goldman.
• UBS upgraded Deere (DE) to buy from neutral and AGCO (AGCO) to neutral from sell.
• Canadian Solar (CSIQ) was upgraded to outperform from neutral at Macquarie.
• Thoratec (THOR) and DTE Energy (DTE) were upgraded to overweight from equal weight at Barclays.
• NICE Systems (NICE) was upgraded to overweight from neutral at HSBC.
• Deutsche Bank upgraded Copa Holdings (CPA) to buy from hold.
• BofA/Merrill upgraded Nu Skin (NUS) to buy from neutral.
• Continental Resources (CLR) was upgraded to buy from hold at Jefferies.

Analyst Upgrades

• Best Buy (BBY) was upgraded to top pick from outperform at RBC Capital, as the firm thinks the company's valuation is inexpensive while it will perform well during the holiday season.
• Credit Suisse upgraded CF Industries (CF) to outperform from neutral, citing favorable fundamentals in nitrogen and phosphate markets.
• Canadian Solar (CSIQ) was raised to buy from hold by Jefferies, which cited expectations for higher selling prices next year and cost savings from sourcing more components internally.
• BMO Capital upgraded RC2 Corp. (RCRC) to outperform from market perform as the firm believes that RC2's baby products are performing better than previously expected.
• Ericsson (ERIC) was upgraded to neutral from underperform at BofA/Merril.
• ProLogis (PLD) was upgraded to buy from hold at Stifel Nicolaus.
• Constellation Energy (CEG) was upgraded to outperform from neutral at Macquarie.

With the Memorial Day holiday in the U.S. and the fact that the earnings season has largely wound down, things will be fairly quiet on the economic calendar this week. Like the other big Canadian banks did last week, Bank of Nova Scotia (BNS) is expected to post strong second-quarter results. The same is true of Shoe Carnival (SCVL) and its competitor Collective Brands (PSS). But the earnings highlight of the week may come from America's Car-Mart Inc. (CRMT).

Bentonville Ark.-based America's Car-Mart, the largest publicly traded used auto retailer in the U.S., opened new dealerships and upgraded its communications infrastructure in its fiscal fourth quarter. Analysts surveyed by Thomson Reuters expect its earnings to have risen more than 25% from the same period of the previous year. Revenue for the three months that ended in April is expected to have risen about 14% in the past year. The consensus forecast for the full year has EPS up more than 30% and revenue up about 13%. The company's per-share earnings have beat consensus estimates in past four quarters, by as much as 45%.

Analyst upgrades

• Deutsche Bank upgraded Sonoco Products (SON) to buy from hold after the company reported Q1 results and raised guidance. The firm upped its target for shares to $38 from $32.
• Baird upgraded Western Digital (WDC) to outperform from neutral following the solid Q3 report and guidance. The firm raised its target to $50 from $48.
• Goldman upgraded Qwest (Q) to neutral from sell. Qwest is being acquired by CenturyLink (CTL).
• Hershey (HSY) was upgraded to neutral from underweight at JPMorgan.
• Principal Financial (PFG) was upgraded to neutral from sell at UBS.
• Monster Worldwide (MWW) was upgraded to market perform from underperform at Wells Fargo.

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

• Ann Taylor Stores Corp. (ANN) declining same-store sales offset better-than-expected Q3 earnings.
• Canadian Solar Inc. (CSIQ) reached a new 52-week high after Q3 results handily exceeded expectations.
• Dillard's Inc. (DDS) said that it swung to a Q3 profit due to cost cutting as revenue declined year over year.
• GameStop Corp. (GME) reported uninspiring Q3 numbers that included a slump in same-store sales.
• Home Depot Inc. (HD) lower Q3 earnings and revenue beat analysts' estimates, but shares still declined.

Canadian Solar Inc. (CSIQ) tagged a new 52-week peak Tuesday morning in the wake of its latest earnings report. The solar company announced that it raked in a third-quarter profit of $25.3 million, or 69 cents per share, while revenue dipped 16% to $213.1 million. The results handily exceeded analysts' consensus expectations for a profit of 54 cents per share on $210.9 million in revenue.

Shipments for the recently concluded quarter more than doubled on a sequential basis, arriving at 102.6 megawatts (MW). For 2010, Canadian Solar said it expects shipments to range between 600 MW and 700 MW, compared to the current 2009 forecast for shipments of 295 MW to 305 MW.

It was good news, bad news Tuesday for maple leaf stocks Bank of Montreal (NYSE: BMO) and Canadian Solar Inc. (NYSE: CSIQ). While both reported better than expected quarterly results, Bank of Montreal reported lower second-quarter earnings and said it would lay off 1,100 employees, and Canadian Solar posted a first-quarter loss due to plunging revenues.

Bank of Montreal, Canada's fourth-largest bank, reported its profit declined to C$358 million (US$317 million), or 61 Canadian cents per share, in the quarter that ended April 30. Results included one-time charges of C$80 million for losses in BMO's backup financing operations and C$80 million in severance costs for job cuts. Adjusted earnings came to 93 Canadian cents per share, just above analysts' expectations.

Analyst upgrades:

• UBS upgraded Target (NYSE: TGT) to Buy from Neutral and raised its price target to $52 from $45 citing reduced inventories, some credit stability, and an improved back-to-school period.
• Credit Suisse said concerns regarding Safeway's (NYSE: SWY) price position are overblown and that earnings risk is limited. The firm upgraded shares to Outperform from Neutral and raised the target price to $25 from $22.
• Oppenheimer upgraded Canadian Solar (NASDAQ: CSIQ) to Outperform from Perform as it believes the story is underappreciated following the recent sector rally. The firm has a $14 price target on the stock.
• CME Group (NASDAQ: CME) was upgraded to buy from Neutral at Goldman.
• Freeport McMoRan (NYSE: FCX) was upgraded to Overweight from Neutral at JP Morgan.
• Gilead Sciences (NASDAQ: GILD) was upgraded to Buy from Neutral at FTN Equity.

Last week, JA Solar Holdings Co. Ltd. (NASDAQ: JASO) posted a quarterly loss and lowered its guidance. But as interest in alternative energy continues to grow, analysts polled by Thomson Financial are still looking for good things from solar energy concerns scheduled to report earnings this week.

Strong growth at Trina Solar Ltd. (NYSE: TSL) in the third quarter prompted it to lift its guidance back in October. Analysts expect the Chinese company to post profits that are 76.3% higher than a year ago, or $1.18 per share on revenues of $268.4 million (+225.0%). Though Trina Solar missed estimates in the second quarter, analysts on average recommend buying TSL. Shares are down 81.4% from a year ago and trading near an all-time low.

Earnings of rival LDK Solar Co. Ltd. (NYSE: LDK) are expect to have risen 47.9% to $0.71 per share on revenues of $486.7 million (+206.6%). Also based in China, LDK has not missed estimates in recent quarters; in fact, it blew past expectations in the second quarter. Yet the consensus recommendation is to hold LDK. Like Trina Solar, LDK's shares are trading near an all-time low; the share price has fallen 50.0% in the past year.

Analysts anticipate third-quarter earnings for Canadian Solar Inc. (NASDAQ: CSIQ) to be a whopping 96.3% higher than a year ago, or $0.54 per share on revenues of $248.0 million (+154.5%). The company easily topped estimates in the previous quarter. ReneSola Ltd. (NYSE: SOL) and Suntech Power Holdings Co. Ltd. (NYSE: STP) are also expected to report earnings growth of 29.7% ($0.37 per share) and 23.8% ($0.42 per share), respectively. All three of these stocks reached 52-week lows last week, and all are considered buys.

Canadian Solar (NASDAQ: CSIQ) develops, manufactures and markets solar module products for the conversion of sunlight into electrical energy. Offerings include solar panels for residential and industrial use, plus customized modules that customers incorporate into their own products. The modules power such special-purpose devices as bus stop lighting systems and vehicle battery chargers. Canadian Solar is incorporated in Ontario, but conducts all of its manufacturing operations through six subsidiaries in China. The firm is actively involved in government projects to bring solar power to rural Chinese communities. Clients are distributors, systems integrators and manufacturers in North America, Asia and Europe.

The company pleased investors last week, when it raised its 2008 output guidance from 200-220 MW to 230-260 MW and boosted its estimated annual revenue from $650-$750 million to $750-$870 million ($836.06M consensus). Management pointed to continued robust market demand for its products.

Canadian Solar (NASDAQ: CSIQ) is recently up $5.97 to $48.49 after increasing its 2008 annual revenue and output guidance to reflect the sales of e-Module products.

CSIQ call option volume of 15,574 contracts compares to put volume of 5,013 contracts. CSIQ July call option implied volatility is at 86; puts are at 97; near its 26-week average according to Track Data, suggesting non-directional price risk. CSIQ puts are more expensive than calls because CSIQ is difficult to borrow.

Option Update is provided by Stock Specialist Paul Foster of theflyonthewall.com

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.