Analyst Upgrades

• Citigroup upgraded Blackrock (BLK) to hold from sell and removed the stock from its Top Picks Live list as a sell. The firm upped its target for shares to $198 from $190.
• Jesup & Lamont upgraded Starbucks (SBUX) to buy from hold following the company's Q2 results. The firm raised its target for shares to $32 from $25.
• CLSA upgraded Nabors Industries (NBR) to outperform from underperform. The firm said the Q1 report was in-line with their estimate and they expect U.S. land drilling to continue to improve. The firm has a $24 price target on the stock.
• Alcoa (AA) was upgraded to neutral from underweight at HSBC.
• Boeing (BA) was upgraded to outperform from neutral at Credit Suisse.
• Chipotle Mexican Grill (CMG) was upgraded to buy from hold at Jefferies.

MOST NOTEWORTHY: RF Micro Devices, QLT Inc and Everest RE Group were today's noteworthy upgrades:

• Jefferies upgraded RF Micro (NASDAQ:RFMD) to Buy from Hold citing strong proprietary Asian channel checks. The firm believes RF Micro is past the worst of the inventory handset correction in Asia and that the MPG business is also recovering.
  
• RBC Capital said QLT Inc's (NASDAQ:QLTI) risk/reward has improved and expects divestment announcements to start in late Q2. The firm raised shares to Outperform from Sector Perform.
  
• Citigroup upgraded Everest RE (NYSE:RE) to Buy from Hold citing valuation, likely buybacks, the low risk of asbestos charges and the seasonal trade ahead.

OTHER UPGRADES:

• Merriman raised Level 3 Comm (NASDAQ:LVLT) to Neutral from Sell.
  
• Zions Bancorp (NASDAQ:ZION) was upgraded to Outperform from Neutral at Baird.
  
• True Religion (NASDAQ:TRLG) was raised at Morgan Keegan to Outperform from Market Perform.