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.

Investors pushed up call option prices in the electric utilities industry, and also pushed up put option prices in the management services industry today.

Any time the volatility skews above 1.00, it is an indication that calls are more expensive than puts. Typically, when calls are more expensive than puts, it means the demand for calls is greater than the demand for puts because investors believe the stock is going to rise in the future, and they want to take advantage of that movement by buying calls.

The opposite is also true. Any time a volatility skews below 1.00, it is an indication that puts are more expensive than calls.

Bullish Volatility Skews

Unisource Energy Corp. (UNS)---part of the Electric Utilities industry---came in at the top with a volatility skew of 1.15. This shouldn't be a surprise as UNS is up 7.37 percent for the past month.

Analyst upgrades:

• Calyon upgraded major network carriers based on falling oil prices and capacity cuts. The analyst is positive over the next 12 months but cautious short-term given the uncertain economy, and volatile markets and oil prices. AMR Corp (NYSE: AMR) and Delta Air (NYSE: DAL) were upgraded to Add from Neutral and UAL Corp (NASDAQ: UAUA) was raised to Neutral from Reduce.
• Ryanair (NASDAQ: RYAAY) was upgraded at Citigroup to Buy from Hold.
• Boardwalk Pipeline (NYSE: BWP) was raised to Buy from Hold at Deutsche Bank.
• Cowen lifted Biogen Idec (NASDAQ: BIIB) to Outperform from Neutral.
• JP Morgan upgraded Choice Hotels (NYSE: CHH) to Neutral from Underweight following the better-than-expected Q3 report.
• Oppenheimer upgraded shares of Integra LifeSciences (NASDAQ: IART) to Outperform from Perform on valuation, the company's minimal exposure to economic conditions, and expectations for margin improvement and a rebound in organic growth.

Analyst downgrades:

• Sherwin-Williams (NYSE: SHW) and AerCap Holdings (NYSE: AER) were downgraded to Neutral from Overweight at JP Morgan.
• UBS downgraded Embarq (NYSE: EQ) to Neutral from Buy following the CenturyTel (NYSE: CTL) merger announcement.