Analyst Upgrades

• Citigroup (C) to outperform from market perform at Bernstein.
• Cubist Pharma (CBST) to outperform from neutral at RW Baird.
• Pentair (PNR) to buy from hold at Citigroup.
• Heritage Financial (HFWA) to outperform from market perform at Keefe Bruyette.
• SL Green Realty (SLG) and Digital Realty (DLR) to market perform from underperform at FBR Capital.
• MGM Resorts (MGM) to neutral from Sell at Janney Capital.
• Ciena (CIEN) to buy from neutral and Olin (OLN) to buy from underperform at BofA/Merrill.
• Mellanox (MLNX) to overweight from equal weight at Barclays.
• ConocoPhillips (COP) and Canadian Natural (CNQ) to overweight from neutral at JPMorgan.
• IDEX (IEX) to outperform from perform at Oppenheimer.
• Taiwan Semiconductor (TSM) to buy from hold at Deutsche Bank.
• Ctrip.com (CTRP) to positive from neutral at Susquehanna.
• Linear Technology (LLTC) and Analog Devices (ADI) to hold from sell at Auriga.
• Quicksilver (KWK) to outperform from market perform at BMO Capital.

Analyst upgrades:

• Collins Stewart upgraded General Dynamics (NYSE: GD) to Buy from Hold as it finds the valuation compelling at current levels and sees potential upside from a better economy and better-than-expected defense budgets.
• SunTrust views the sell-off in shares of Cabot Oil (NYSE: COG) as a buying opportunity and expects the Pennsylvania Department of Environmental Protection order to be resolved quickly. The firm upgraded Cabot to Buy from Neutral.
• Barclays upgraded Cisco (NASDAQ: CSCO) to Overweight from Equal Weight based on expectations for improved carrier demand, continued U.S. momentum, and an improved Europe.
• Applied Materials (NASDAQ: AMAT) was upgraded to Buy from Hold at Citigroup.
• Stericycle (NASDAQ: SRCL) was upgraded to Gradually Accumulate from Hold at Soleil.
• Grupo Televisa (NYSE: TV) was upgraded to Neutral from Sell at Goldman.