Analyst Upgrades

• Applied Materials (AMAT) to overweight from neutral at Piper Jaffray.
• Air Products (APD) to buy from hold at Citigroup.
• Youku.com (YOKU) and Pinnacle West (PNW) to buy from neutral at Goldman.
• Stryker (SYK) and Zimmer (ZMH) to buy from neutral at UBS.
• Zions Bancorp (ZION) to outperform from neutral at Macquarie.
• Alnylam (ALNY) to buy from hold at Needham.
• AK Steel (AKS) to buy from hold at KeyBanc.

Analyst Upgrades

• Air Products (APD) to buy from hold at Deutsche Bank.
• Zimmer (ZMH) to outperform from neutral at RW Baird.
• SunPower (SPWRA) to buy from hold at Jefferies.
• Brocade (BRCD) to buy from hold at Wunderlich and at ThinkEquity.
• Duke Energy (DUK) to neutral from underperform at BofA/Merrill.
• NewStar Financial (NEWS) to outperform from market perform at Keefe Bruyette.
• Hormel Foods (HRL) to hold from sell at Soleil.
• Inspire Pharma (ISPH) to hold from sell at Duncan-Williams.
• Alnylam (ALNY) to buy from neutral at Roth Capital.
• Weight Watchers (WTW) to equal weight from underweight at Morgan Stanley.
• Raytheon (RTN) and Toreador Resources (TRGL) to outperform from sector perform at RBC Capital.

Analyst Upgrades

• Wells Fargo upgraded Home Properties (HME) to outperform from market perform. The firm thinks that rental rate in the Northeast and mid-Atlantic are poised to increase, while Home Properties provides relatively cheap access to these markets.
• Deutsche Bank upgraded VeriSign (VRSN) to buy from hold after the company sold its authentication business to Symantec (SYMC). The firm upped its target for VRSN shares to $35 from $25.
• Macquarie upgraded Nexen (NXY) to outperform from neutral following the company's divestiture of its noncore heavy-oil properties in Western Canada.
• UPS (UPS) was upgraded to buy from hold at Stifel Nicolaus.
• Dell (DELL) was upgraded to buy from hold at Standpoint Research.
• Emerson Electric (EMR) was upgraded to outperform from market perform at Bernstein.

Analyst upgrades:

• Wells Fargo upgraded Prudential (PRU) to outperform from market perform. The firm thinks the company is in a better position than its peers and will be able to more effectively exploit M&A opportunities.
• UBS upgraded Reliance Steel (RS) to buy from neutral based on potential growth through M&A and valuation. The firm raised its target to $50 from $49.
• Deutsche Bank upgraded Eastman Chemical (EMN) to buy from hold on expectations the company's portfolio transformation will drive higher normalized earnings power, which the firm believes is not fully reflected in consensus estimates. Deutsche raised its target price on shares to $70 from $62.
• Amylin Pharma (AMLN) was upgraded to overweight from equal weight at Barclays.
• Cephalon (CEPH) was upgraded to buy from hold at Jefferies.
• Acuity Brands (AYI) was upgraded to outperform from perform at Oppenheimer.

• Citigroup upgraded Emergency Medical Services (NYSE: EMS) to Hold from Sell as it believes earnings estimates and valuation multiples could expand should Congress extend insurance coverage to the currently uninsured. The firm raised its target on shares to $38 from $29.
• JPMorgan upgraded Deutsche Bank (NYSE: DB) to Neutral from Underweight on expectations the company's fixed income business will drive earnings.
• KeyBanc expects U.S. Steel (NYSE: X) to benefit from a global recovery in flat-rolled products and a potential stabilization in energy end markets. The firm upgraded shares to Buy from Hold.
• Yahoo! (NASDAQ: YHOO) was upgraded to Buy from Hold at Soleil.
• Pinnacle Financial (NASDAQ: PNFP) was upgraded to Equal Weight from Underweight at Stephens.
• BP Plc (NYSE: BP) was raised to Buy from Hold at ING Group.