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Analyst upgrades:

• Citigroup upgraded Adtran (NASDAQ: ADTN) to Buy from Hold on expectations the company will benefit from the broadband Stimulus funds.
• Morgan Stanley upgraded Continental Airlines (NYSE: CAL) to Overweight from Equal Weight based on relative valuation and views the company as a "survivor." Additionally, the analyst lowered 2009 industry estimates but believes it is the last cut for the year and is incrementally more positive on the sector.
• Morgan Stanley also upgraded EXFO Electro-Optical (NASDAQ: EXFO) to Overweight from Market Weight based on valuation.
• Tata Motors (NYSE: TTM) was upgraded to Buy from Hold at Deutsche Bank.
• Ascent Solar (NASDAQ: ASTI) was upgraded to Neutral from Underweight at JP Morgan.
• Mechel Steel (NYSE: MTL) was upgraded to Neutral from Underperform at Credit Suisse.

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?

Cisco (NASDAQ: CSCO) is recently up 67 cents to $19.88 in pre-open trading. CSCO will replace General Motors (GM) in the Dow Jones Industrial Averages -- DJIA. CSCO June option implied volatility of 36 is below its 26-week average of 47, according to Track Data, suggesting decreasing price movement.

Travelers (NYSE: TRV) is recently trading at $41.87 in pre-open trading, above its close of $40.66. TRV will replace Citigroup (NYSE: C) in the DJIA. TRV June and July option implied volatility of 37 is below its 26-week average of 54, according to Track Data, indicating decreasing price movement.

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

"Cisco (NASDAQ: CSCO), the bellwether company when it comes to performance in the tech industry, is hanging tough," says growth stock expert Toby Smith.

In his ChangeWave Investing he explains why "investors should own this stock before the economy shifts into a higher gear." Here's his review.

"As a true dominator, Cisco is beautifully positioned in several long-term secular trends including cloud computing and data center build-outs, unified communications, web-based video and telepresence.

For NetApp (NASDAQ: NTAP), yesterday was fairly eventful. Not only did the company announce its Q4 earnings but also a $1.5 billion deal to purchase rival storage maker, Data Domain (NASDAQ: DDUP). The transaction comes to $25 per share.

No doubt, NetApp needs to find growth, as CFOs tighten information technology (IT) budgets. Keep in mind that Q4 revenues fell 6.2% to $879.6 million.

Google (NASDAQ: GOOG) closed at $390. The New York Times says: "New mood in antitrust may target Google." The WSJ reported Silicon Valley and GOOG are under a new tough phase antitrust scrutiny. GOOG June option implied volatility is at 32, below its 26-week average of 49 according to Track Data, suggesting decreasing price movement.

Cisco (NASDAQ: CSCO) closed at $19.75. CSCO's Unified Computing System (UCS) is expected to ship in June. CSCO June option implied volatility of 35 is below its 26-week average of 48, according to Track Data, suggesting decreasing price movement.

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

Analyst upgrades:

• Morgan Stanley upgraded Chesapeake Energy (NYSE: CHK) to Overweight from Equal Weight as they expect the company to benefit from higher natural gas prices in 2010. The firm has a $34 target on shares.
• Citigroup upgraded Energy Conversion (NASDAQ: ENER) to Hold from Sell on valuation is it finds the risk/reward balanced at current levels. The firm raised its target price to $16 from $13.
• Jefferies upgraded Lifetime Brands (NASDAQ: LCUT) to Buy from Underperform to reflect reduced liquidity concerns and an improved outlook for Global Direct Sellers. The firm raised its target price to $4 from $2.
• American Eagle (NYSE: AEO) was upgraded to Overweight from Equal Weight at Barclays.
• TJX Companies (NYSE: TJX) was upgraded at Barclays to Overweight from Equal Weight and to Outperform from Netural at Credit Suisse.
• STEC Inc (NASDAQ: STEC) was raised to Overweight from Market Weight at Thomas Weisel.

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

• Alcatel-Lucent (NYSE: ALU) shares rose even though it reported a wider loss for the quarter.
• American Express Co. (NYSE: AXP) posted better-than-expected Q1 results but warned of challenges.
• Blackstone Group (NYSE: BX) reported a net loss and slumping revenues for the first quarter.
• Center Financial Corp. (NASDAQ: CLFC) was downgraded following its Q1 earnings report.
• Cisco Systems Inc. (NASDAQ: CSCO) posted lower Q3 earnings that still topped analysts estimates.