Notable Analyst Rating Changes 02/13: (DD) (AMD) (TSL) Upgraded; (MRVL) (ACI) (NTAP) Downgraded

UPGRADES
Stifel Nicolaus upgrades SandRidge Energy (NYSE: SD) from Hold to Buy.

Bernstein lifts AMD (NYSE: AMD) from Market Perform to Outperform, its price target raised from $6.50 to $10.

BofA/Merrill Lynch boosts Trina Solar (NYSE: TSL) from Underperform to Buy, price target raised from $2 to $17.

Maxim Group raises Youku.com (NYSE: YOKU) from Sell to Hold.

For daily real-time Upgrades go to http://www.streetinsider.com/Upgrades

DOWNGRADES
Benchmark cuts Marvell (Nasdaq: MRVL) from Buy to Hold. Click Here for more color.

Brean Murray Carret & Co. downgrades Arch Coal Inc (NYSE: ACI) from Buy to Hold. Click Here for more color.

ThinkEquity reduces NetApp (Nasdaq: NTAP) from Buy to Hold with a price target of $42.

Societe Generale lowers Alcatel-Lucent (NYSE: ALU) from Hold to Sell.

For daily real-time Downgrades go to http://www.streetinsider.com/downgrades

NEW COVERAGE
UBS initiates AES Corp. (NYSE: AES) with a Buy, and $15 price target.

Piper Jaffray starts MannKind (Nasdaq: MNKD) with an Overweight and $4 price target.

Cowen begins Adobe (Nasdaq: ADBE) with an Outperform.

Morgan Stanley assumes DuPont (NYSE: DD) at Equalweight and price target of $56.

For daily real-time New Coverage go to http://www.streetinsider.com/New+Coverage

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