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

• Advance Auto Parts Inc. (AAP) was downgraded due to concerns about its 2010 earnings outlook.
• Analogic Corp. (ALOG) received an analyst's downgrade after it reported weaker-than-expected earnings.
• AutoZone Inc. (AZO) strong Q1 results beat earnings expectations, but shares rose only a little.
• BWAY Holding Co. (BWY) received an analyst's upgrade following release of its Q4 results.
• Casey's General Stores Inc. (CASY) topped Q2 earnings estimates but lower revenue fell short.
• Ciena Corp. (CIEN) shares plummeted after it fell short of its earnings expectations for Q4.

Analyst upgrades:

• Jefferies upgraded Starbucks (SBUX) to buy from hold, citing EPS and revenue momentum heading into 2010. The firm raised its target to $25 from $22.
• Soleil upgraded Zions Bancorp (ZION) to buy from hold on valuation as it believes the recent pullback provides an attractive entry point. The firm has a $17.50 price target on shares.
• RBC Capital expects Rigel Pharmaceuticals (RIGL) to sign a partnership for R788 in the next four months to run its global Phase III program. Shares were upgraded to outperform from sector perform and its target was raised to $11 from $9.
• Deere (DE) was upgraded to overweight from equal weight at Morgan Stanley.
• Shire (SHPGY) was raised to outperform from market perform at Bernstein.
• Ann Taylor (ANN) was upgraded to overweight from market weight at Thomas Weisel.
• J.M. Smucker (SJM) was upgraded to overweight from neutral at JPMorgan.

I'm reiterating my Buy rating for Ciena Corp. (NASDAQ: CIEN), first recommended on May 19, 2009, at a price of $11.27.

Given the likely U.S. recovery, increased demand for bandwidth in the quarters/years ahead will more than offset any near-term sales weakness, which is good news for bandwidth provider Ciena.

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

• Abercrombie & Fitch Co. (NYSE: ANF) earnings prospects and declining sales resulted in a downgrade.
• America's Car-Mart Inc. (NASDAQ: CRMT) stronger-than-expected Q1 results led shares to a four-year high.
• ArcSight Inc. (NASDAQ: ARST) reported strong Q1 numbers on increasing demand for cyber security.
• Brown-Forman Inc. (NYSE: BF.B) Q1 results easily topped expectations despite a decline in revenue.
• Ciena Corp. (NASDAQ: CIEN) posted a Q3 loss but revenue improved sequentially, and shares rose.

Just a couple years ago, the shares of Ciena Corp. (NASDAQ: CIEN) were above $40. But since then, it's been brutal -- with the shares eventually falling to $5.35. After all, the company is in the competitive telecom-equipment space.

However, things have been getting better lately. In fact, the share price is now at $13.06.

And this week Ciena reported its fiscal Q3 earnings report. While revenues dropped 35% over the past year, they were actually up 14% over the prior quarter. There was a net loss of $26.5 million, or $0.29 per share.

Analyst upgrades:

• Piper Jaffray upgraded PetMed Express (NASDAQ: PETS) to Overweight from Neutral following the better-than-expected Q1 results. The firm raised its target on shares to $22 from $19.
• Deutsche Bank upgraded International Paper (NYSE: IP) and Packaging Corp. (NYSE: PKG) to Buy from Hold to reflect stabilization in the containerboard industry. The firm raised its target price on Packaging Corp. to $24 from $14, and on International Paper to $24 from $16.
• Bernstein upgraded Human Genome Sciences (NASDAQ: HGSI) to Outperform from Market Perform following the positive Phase III data for Benlysta in lupus.
• IBM (NYSE: IBM) was upgraded to Hold from Sell at Societe Generale.
• British Airways (OTC: BAIRY) was upgraded to Buy from Sell at Goldman.
• Continental AG (OTC: CTTAY) was upgraded to Hold from Sell at Citigroup.

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

• Aetna Inc. (NYSE: AET) lowered its 2009 earnings guidance, initially sending the share price lower.
• Ciena Corp. (NASDAQ: CIEN) reported a bigger-than-expected Q2 net loss as revenues sank.
• Collective Brands Inc. (NYSE: PSS) saw Q1 earnings and sales decline, but beat Wall Street estimates.
• Google Inc. (NASDAQ: GOOG) earnings prospects led Goldman Sachs analysts to increase its forecasts.
• Guess? Inc. (NYSE: GES) weak Q1 results topped estimates and it offered guidance that pleased investors.

Ciena (NASDAQ: CIEN), a business that sells various networking and software products for fiber-optic and broadband technologies, and whose colleagues include Cisco (NASDAQ: CSCO) and Alcatel-Lucent (NYSE: ALU), reported late Thursday a difficult second quarter. Revenues declined by 40%. For the bottom line, Ciena said it lost 25 cents per share on an adjusted basis. Last year at this time, Ciena made an adjusted 40 cents per share. And in terms of expectations, the company was only supposed to lose 9 cents per share. Guess there wasn't a chance of that, huh?