UPGRADES
Jefferies & Co upgrades Rosetta Stone (NYSE: RST) from Hold to Buy. Price target raised from $24 to $29.

Goldman Sachs upgrades two pharma’s from Sell to Neutral:

• AstraZeneca plc (NYSE: AZN); and

• GlaxoSmithKline plc (NYSE: GSK). Click Here for more color.

Deutsche Bank upgrades China Unicom (NYSE: CHU) and China Telecom (NYSE: CHA) from Hold to Buy. Think China Unicom is one of their top picks in China TMT space.

Morgan Keegan upgrades OSI Systems (NASDAQ: OSIS) from Market Perform to Outperform.

Lamar Advertising (NASDAQ: LAMR) gets two upgrades today:

• J.P. Morgan to Overweight from Neutral and a price target increased to