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Top Analyst Upgrades and Downgrades (AMGN, AZN, BIIB, CELG, GSK, GFI, HGSI, LDK, MWV, NVS, RHT, RIMM, STX, SFD, STP, TIN, TSL, WDC)

These are some of this Tuesday’s key analyst upgrades, downgrades, and initiations seen in Wall Street research calls.

Amgen Inc. (NASDAQ: AMGN) Started as Neutral at Credit Suisse.
AstraZeneca (NYSE: AZN) Cut to Underperform at Credit Suisse.
Biogen Idec Inc. (NASDAQ: BIIB) Started as Neutral at Credit Suisse.
Celgene Corporation (NASDAQ: CELG) Started as Neutral at Credit Suisse.
Gilead Sciences Inc. (NASDAQ: GILD) Started as Outperform at Credit Suisse.
GlaxoSmithKline plc (NYSE: GSK) Raised to Neutral at Credit Suisse.
Gold Fields Ltd. (NYSE: GFI) Raised to Overweight at HSBC.
Human Genome Sciences Inc. (NASDAQ: HGSI) Started as Outperform at Credit Suisse.
LDK Solar Co., Ltd. (NYSE: LDK) Started as Market Perform at Wells Fargo.
MeadWestvaco Corporation (NYSE: MWV) Cut to Neutral at BofA/ML.
Novartis (NYSE: NVS) Raised to Outperform at Credit Suisse.
Red Hat Inc. (NYSE: RHT) Raised to Overweight at Morgan Stanley.
Research in Motion Ltd. (NASDAQ: RIMM) Cut to Neutral at Gleacher & Co.
Seagate Technology PLC (NASDAQ: STX) Started as Buy at Citigroup.
Smithfield Foods Inc. (NYSE: SFD) Raised to Buy at BofA/ML.
Suntech Power Holdings Co. Ltd. (NYSE: STP) Raised to Neutral at Goldman Sachs; Reiterated Buy and Raised target to $12 at Auriga.
Temple-Inland Inc. (NYSE: TIN) Cut to Neutral at BofA/ML.
Trina Solar Ltd. (NYSE: TSL) Raised to Buy at Goldman Sachs.
Western Digital Corporation (NYSE: WDC) Started as Buy at Citigroup.

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JON C. OGG