To get a valuation juiced up, all it takes is two bidders. And, that's what Data Domain (NASDAQ: DDUP) got. The data deduplication company has been the target of two rival bidders: NetApp (NASDAQ: NTAP) and EMC (NYSE: EMC).

Well, today the wrangling stopped -- with EMC as the victor. The company has agreed to shell out $2.4 billion for Data Domain.

Stocks felt choppy all day, although the late day move and afternoon stability allowed stocks to have another solid day. Housing starts added some strength, and the buyers are still deciding they need to be in rather than out of the market.

Here are today's unofficial closing bell levels:

Dow 8,746.51 +25.07 (0.29%)
S&P 500 945.36 +2.49 (0.26%)
Nasdaq 1,836.89 +8.21 (0.45%)

Top Analyst Upgrades
Top Analyst Downgrades

A race has broken out for Data Domain Inc (NASDAQ: DDUP). NetApp Inc. (NASDAQ: NTAP) offered $1.5 billion for the company two weeks ago, and EMC Corp. (NYSE: EMC) decided it had to get in on the action, upping the ante to $1.8 billion yesterday. Data Domain shares gained 16% on the news in late trading yesterday, resulting in EMC's bid carrying a 17% premium.

EMC sees Data Domain as its ticket into the market for software-based storage management, as the target company's products help reduce the amount of disk space needed to store data. With large, high-profile clients like AT&T Inc. (NYSE: T) and the U.S. Defense Department, Data Domain was able to double its top line to $274 million in 2008. It pulled in net income of $21.6 million last year, up from a loss of $3.7 million in 2007.

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

• Aeropostale Inc. (NYSE: ARO) beat profit expectations as revenue and same-store sales both increased.
• Aruba Networks Inc. (NASDAQ: ARUN) received an analyst's upgrade following its Q3 report.
• Buckle Inc. (NYSE: BKE) reported better-than-expected Q1 expectations as revenue surged.
• Campbell Soup Co. (NYSE: CPB) higher Q2 earnings beat expectations and sent shares upward.
• Deere & Co. (NYSE: DE) reported better-than-expected Q3 earnings, sending shares higher.

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.

This was one of those "sell-the-news" trading days that many of the bears were expecting over the last two weeks. In fact, some bears might finally feel vindicated after weeks of being slapped silly. The European markets started lower and the U.S. followed suit. Credit concerns for banks getting worse ahead and what Uncle Sam will do with his stakes in the banks was just a part of it.

Here are today's unofficial closing bell levels:

Dow 7,841.73 -289.60 (-3.56%)
S&P 500 832.39 -37.21 (-4.28%)
Nasdaq 1,608.21 -64.86 (-3.88%)

Top 10 Analyst Calls

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

• Applied Materials Inc. (NASDAQ: AMAT) posted a Q1 loss and announced a workforce reduction.
• ArcelorMittal (NYSE: MT) swung to it's first ever quarterly loss due to lower demand and a big write-down.
• Buffalo Wild Wings Inc. (NASDAQ: BWLD) shares surged after it posted strong Q4 results.
• Chipotle Mexican Grill Inc. (NYSE: CMG) posted better-than-expected Q4 earnings as revenue surged.
• Genzyme Corp. (NASDAQ: GENZ) topped Q4 earnings estimates, sending shares higher.
• Global Traffic Network Inc. (NASDAQ: GNET) weaker-than-expected Q2 results led to a downgrade.
• Level 3 Communications Inc. (NASDAQ: LVLT) shares fell despite its upside surprise for Q4.
• Lions Gate Entertainment (NYSE: LGF) posted a bigger-than-expected Q3 loss despite revenue growth.

NetApp (NASDAQ: NTAP - option chain) shares are headed higher today after the company announced it plans to cut 6 percent of its global work force in order to reduce costs. NTAP reported a loss of 23 cents per share, but excluding items made 28 cents, which was in line with estimates. 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 NTAP.

NTAP opened this morning at $14.10. So far today the stock has hit a low of $14.07 and a high of $16.41. As of 11:55, NTAP is trading at $16.41, up $1.16 (7.6%). The chart for NTAP looks bearish and S&P gives NTAP a negative 2 STARS (out of 5) sell ranking.

Analyst upgrades:

• Keefe Bruyette upgraded shares of AllianceBernstein (NYSE: AB) to Outperform from Market Perform as they find AB's risk/reward attractive given its attractive long-term business model. Wachovia upgraded Watson Pharma (NYSE: WPI) and Teva Pharma (NASDAQ: TEVA) to Outperform from Market Perform citing valuations and positive drivers for generics that include patent expirations and market share expansion.
• UBS raised Lloyds TSB Group (NYSE: LYG) to Neutral from Sell on expected pricing power following the HBOS (OTC: HBOOY) acquisition.
• Otter Tail (NASDAQ: OTTR) was upgraded to Outperform from Neutral at Baird.
• GFI Group (NASDAQ: GFIG) was upgraded at Citigroup to Hold from Sell.
• Merrill upgraded Logitech (NASDAQ: LOGI) to Neutral from Underperform.

Analyst downgrades:

• JP Morgan downgraded shares of Lloyds TSB Group to Underweight from Neutral on capital concerns and believes the HBOS acquisition is not in the best interest of shareholders.
• Stephens downgraded Universal Truckload (NASDAQ: UACL) to Equal Weight from Overweight on valuation and concerns about a slowdown in the flatbed sector. The firm's target remains $28.

NetApp (NASDAQ: NTAP) shares are falling after the company announced it will sell $1.1 billion in five-year convertible senior notes to institutional buyers. Terms of the debt were not disclosed. If you think this stock won't be rising too far in the coming months, then it could be a good time to look at a bearish hedged play on NTAP.

After hitting a one-year high of $33.84 last June, the stock hit a one-year low of $19.00 in March. This morning, NTAP opened at $23.48. So far today the stock has hit a low of $22.90 and a high of $23.88. As of 12:10, NTAP is trading at $23.85, down $0.11 (-0.4%). The chart for NTAP looks bullish but deteriorating, while S&P gives the stock a neutral 3 Stars (out of 5) hold rating.

For a bearish hedged play on this stock, I would consider a September bear-call credit spread above the $30 range. A bear-call credit spread is an options position that combines the purchase and sale of call options to hedge risk in case the stock doesn't do what you think but still leverage nice returns. For this particular trade, we will make an 8.7% return in three and a half months as long as NTAP is below $30 at September expiration. NetApp would have to rise by more than 25% before we would start to lose money. Learn more about this type of trade here.