Analyst Upgrades

• Cisco (CSCO) to outperform from perform at Oppenheimer.
• Cognizant (CTSH) to buy from neutral at Goldman.
• Polypore (PPO) to outperform from neutral at RW Baird.
• Elan (ELN) to buy from neutral at UBS.
• Millicom (MICC) and NuStar GP Holdings (NSH) to overweight from equal weight at Morgan Stanley.
• Teekay LNG (TGP) to equal weight from underweight at Morgan Stanley.
• American Railcar (ARII) to outperform from market perform at Morgan Keegan.
• Texas Instruments (TXN) to buy from neutral at Sterne Agee.

Analyst Upgrades

• SunTrust upgraded Anadarko Petroleum (APC) to buy from neutral. The firm believes weakness related to the oil spill disaster is overdone and is a buying opportunity. The firm set an $82 price target on the stock.
• JPMorgan upgraded NII Holdings (NIHD) to overweight from neutral following the company's Q1 results. The firm has a $55 price target on the stock.
• Keefe Bruyette upgraded Columbia Banking (COLB) to outperform from market perform following the company's secondary offering due to valuation. The firm has a $30 price target on the stock.
• Clean Harbors (CLH) was upgraded to outperform from neutral at Credit Suisse.
• Pinnacle Entertainment (PNK) was upgraded to buy from neutral at Janney Montgomery.
• Digital River (DRIV) was upgraded to overweight from equal weight at First Analysis.

Analyst Upgrades

• Piper Jaffray upgraded UPS (UPS) to overweight from neutral with a $79 price target following the company's better-than-expected Q1 results.
• SunTrust believs Zions Bancorp's (ZION) tangible book value is around $20/share, making any future capital raise not as dilutive as the firm previously expected. The firm upgraded shares to buy from neutral and has a $26 target on the stock.
• FBR Capital upgraded J.B. Hunt (JBHT) to outperform from market perform following the company's better-than-expected Q1 results. The firm raised its target price for shares to $43 from $40.
• American Superconductor (AMSC) was upgraded to buy from hold at Deutsche Bank.
• BP (BP) was upgraded to outperform from neutral at Credit Suisse.
• Global Payments (GPN) was upgraded to outperform from market perform at Wells Fargo.

MOST NOTEWORTHY: Sprint Nextel, Safeway, PharmaNet Development, Millennium Pharmaceutical and Telefonica were today's noteworthy upgrades:

• Wachovia upgraded shares of Sprint Nextel Corporation (NYSE: S) to Outperform from Market Perform as they believe the company is within six months of reaching a sustainable turnaround in subscriber growth and that investor expectations can not get much lower.
• CIBC upgraded shares of Safeway Stores Inc (NYSE: SWY) to Sector Outperformer from Sector Performer after the company's strong quarter in a challenging environment.
• Jefferies raised its rating on PharmaNet Development Group Inc (NASDAQ: PDGI) to Buy from Hold as they believe the company should achieve leverage in margins after executing its turnaround.
• Millennium Pharmaceuticals Inc (NASDAQ: MLNM) was upgraded to Outperform from Neutral at Baird. The firm said expectations for Millennium and Velcade are low and would be buyers for the quarter given the ASH meeting and downstream pipeline visibility.
  
• Telefonica SA (NYSE: TEF) was upgraded to Buy from Hold at Citigroup following the company's earnings growth guidance.

OTHER UPGRADES:

• Centene Corporation (NYSE: CNC) was upgraded to Overweight from Equal Weight at Lehman Brothers.
• UBS upgraded NII Holdings Inc (NASDAQ: NIHD) to Buy from Neutral.
• Goldman Sachs added Knight Capital Group Inc (NASDAQ: NITE) to its Conviction Buy List.
• RBC Capital upgraded Annaly Capital Management (NYSE: NLY) to Outperform from Market Perform.