Analyst Upgrades

• Bristol-Myers (BMY) to hold from underperform at Jefferies.
• Pep Boys (PBY) to buy from hold at Stifel Nicolaus.
• Tesla Motors (TSLA) to overweight from equal weight at Morgan Stanley.
• Emerson (EMR) to buy from hold at Deutsche Bank.
• ARM Holdings (ARMH) to buy from neutral at BofA/Merrill.
• NetLogic (NETL) and Cavium Networks (CAVM) to buy from hold at Auriga.
• Aimco (AIV) to hold from sell at Citigroup.
• Ceragon Networks (CRNT) to overweight from equal weight at Barclays.

Analyst Upgrades

• BP (BP) to buy from hold at RBS.
• Symantec (SYMC) to buy from hold at Deutsche Bank.
• GenOn Energy (GEN) and Nationwide Health Properties (NHP) to buy from hold at Citigroup.
• Logitech (LOGI) and Patriot Coal (PCX) to neutral from sell, as well as ARM Holdings (ARMH) to buy from neutral, at Goldman.
• Silvercorp Metals (SVM) to outperform from market perform at BMO Capital.
• Cinemark (CNK) to equal weight from underweight at Morgan Stanley.
• Smith & Nephew (SNN) to market perform from underperform at Bernstein.
• Molex (MOLX) to overweight from underweight at JPMorgan.

Deere (DE) shares trended higher as corn has rallied to a 30-month high. Overall option implied volatility of 29 is below its 26-week average of 33, according to Track Data, suggesting decreasing price movement.

ARM Holdings (ARMH) closed down 4.8% after rallying sharply over the past seven weeks. January call option implied volatility is at 75, February is at 67, above its 26-week average of 46, according to Track Data, suggesting larger price movement.

Options Update is by Stock Specialist Paul Foster of theflyonthewall.com.

The shares of Nvidia (NVDA) have been tearing up the charts in 2011, thanks to a lucrative settlement with Intel (INTC) and a high-profile new partnership with ARM Holdings (ARMH). The month of January isn't quite half-over yet, but the stock is already sitting on a year-to-date gain of 51.6%.

Judging by at least one headline hitting the wires, the stock's rapid rise is making some analysts nervous. However, on Wednesday, one upbeat options trader placed a bet on additional upside from NVDA during the near term.

For years Microsoft (MSFT) was the tech leader. Then, Google (GOOG) came along and Microsoft missed the entire search engine revolution. But Microsoft still dominated in software. Then came Apple (AAPL) with its iPod, iPhone, and iPad. Again, Microsoft missed the small device revolution.

The Wall Street Journal reports that now Microsoft is playing catch-up again. With its next operating system it will use low-powered chips similar to those Apple uses.

The day before Thanksgiving was a very positive as the caution of Tuesday faded. The skirmish in the Koreas was calmed a bit and jobless claims nearly came in under 400,000 for the prior week. Even the woes of Europe seem to be calming on Ireland's major austerity cuts even if Portugal and England had demonstrations out in the streets. October new home sales was a disappointing 8% drop but consumer confidence is holding up.

Here are today's closing bell levels:

Dow Jones 11,187.28 +150.91 (1.37%)
S&P 500 1,198.35 +17.62 (1.49%)
Nasdaq 2,543.12 +48.17 (1.93%)

Top Analyst Calls

Analyst Upgrades

• Wunderlich upgraded Granite Construction (GVA) to buy from hold, citing valuation and expected positive catalysts in 2011. The firm has a $29 price target for shares.
• Jefferies upgraded WuXi PharmaTech (WX) to buy from hold following the Q2 report, citing continued strength in China-based lab services growth. The firm has an $18 target on shares.
• BMO Capital upgraded Newell Rubbermaid (NWL) to outperform from market perform following capital structure actions. The firm has a $20 price target on the stock.
• Energizer (ENR) was upgraded to overweight from equal weight at Morgan Stanley.
• Cephalon (CEPH) was upgraded to buy from neutral at BofA/Merrill.
• Dycom (DY) was upgraded to outperform from market perform at Morgan Keegan.

Today's market might have been sparked by jobs if you read around the web, but Chinese export gains and overseas market gains coupled with a Euro recovery probably added more fuel to the buying fire than anything.

Here were today's unofficial closing bell levels:

Dow 10,172.53 +273.28 (2.76%)
S&P 500 1,086.84 +31.15 (2.95%)
Nasdaq 2,218.71 +59.86 (2.77%)

Top Analyst Calls

"It was interesting to watch the pundits react to the iPad recently; even though none of them had used or even really understood the product, it seemed as though no one liked it following its first introduction," notes tech expert Paul McWilliams in his just-released review of the new tech device from Apple (AAPL).

In his Next Inning newsletter, he explains, "Of course, this was similar to how the pundits first reacted to the iPod when it was released. As the pundits trashed the iPad following its release, I reminded readers about the iPod story and predicted we would see the pundits about face and the stock price run up ahead of the product release."

The transmission of data wirelessly is the new big movement in tech. Kindles, 4G phones, tablets and more will soon be flooding marketplaces worldwide. The wireless and new telecom revolution will be sweeping the market place for years to come. This leads the investor to the obvious question: "How do I make a buck off all this?"

Here, for your consideration, are some stocks likely to thrive in the wireless tech revolution. As new devices and functionalities come onto the market, each of these stocks could perform strongly. Share prices are as of Wednesday's close.

Analyst upgrades:

• Oppenheimer upgraded Momenta Pharmaceuticals (MNTA) to outperform from perform as it finds the stock attractive ahead of FDA's decision on M-enoxaparin. The firm has a $15 price target on the stock.
• Wells Fargo upgraded Symmetry Medical (SMA) to market perform from underperform. The firm cited several factors for the upgrade, including valuation and its belief that Symmetry's customers have begun to deplete their inventories.
• Piper Jaffray upgraded Myriad Pharmaceuticals (MYRX) to neutral from underweight after the company announced Phase 2a date for Azixa. The firm has a $5 price target on shares.
• AvalonBay (AVB) and Mid-America Apartment (MAA) were upgraded to outperform from sector perform at RBC Capital.
• GSI Commerce (GSIC) was upgraded to overweight from equal weight at Morgan Stanley.
• FICO (FICO) was upgraded to equal weight from Underweight at Stephens.