MOST NOTEWORTHY:

• Credit Suisse upgraded Novartis AG (NYSE: NVS) to Neutral from Underperform on valuation and the approval of its drug Tekturna.

• Merrill Lynch upgraded shares of Barnes & Noble, Inc (NYSE: BKS) to Neutral from Sell on valuation.

• Deutsche Bank believes the recent weakness in Altria Group (NYSE: MO) presents a buying opportunity given the potential to unlock value, upgrading shares to Buy from Hold.

• JMP Securities upgraded shares of Advanced Micro Devices Inc (NYSE: AMD) to Market Outperform from Market Perform following checks that indicate the company's next-generation "Barcelona" quad-core server chip and next-generation low-power mobile PC processor chip is exhibiting excellent power, performance, scalability, and price/performance characteristics at key OEM customers.

• ThinkEquity upgraded Microchip Technology Inc (NASDAQ: MCHP) to Accumulate from Source of Funds following the company's improved guidance.

• Morgan Stanley upgraded Eni SpA (NYSE: E) to Equal-Weight from Underweight as they believe management made it clear that the dividend is sustainable and a large-scale acquisition is not forthcoming.

• JP Morgan upgraded Deutsche Telekom AG (NYSE: DT) to Neutral from Underweight citing management's new focus on customer service and expectation's for modest growth for the upgrade.

• AG Edwards upgraded Anheuser-Busch Companies Inc (NYSE: BUD) to Buy from Hold.

• Morgan Joseph upgraded Boyd Gaming Corp (NYSE: BYD) to Buy from Hold based on key markets the company operating in and its diversification.

• Bernstein upgraded Cablevision Systems Corp (NYSE: CVC) upgraded to Outperform from Market Perform.

Analyst upgrades 3-06-07: Altria, AMD & Norvartis all upgraded today originally appeared on BloggingStocks on Tue, 06 Mar 2007 10:45:00 EST. Please see our terms for use of feeds.