Top Analyst Upgrades & Downgrades (C, COST, DO, DNDN, GOOG, HGSI, MCP, NTES, NR, POM, PCYC, SHLD, SIRI, TXN, YHOO)

Source: Jon Ogg
These are some of the top analyst upgrades, downgrades, and initiations seen from Wall Street research calls this Friday morning.

Citigroup, Inc. (NYSE: C) Started as Equal-Weight by Evercore Partners.
Costco Wholesale Corporation (NASDAQ: COST) Cut to Negative from Neutral by Susquehanna; Reiterated Buy and raised price target objective to $93 by Argus.
Diamond Offshore Drilling Inc. (NYSE: DO) Cut to Neutral from Buy at Citigroup.
Dendreon Corporation (NASDAQ: DNDN) Started as Equal-Weight at Barclays.
Google Inc. (NASDAQ: GOOG) Reiterated Outperform with $700 price target objective.
Human Genome Sciences Inc. (NASDAQ: HGSI) Started as Equal-Weight at Barclays.
Molycorp, Inc. (NYSE: MCP) Started as Hold by ThinkEquity. (NASDAQ: NTES) featured as aggressive growth stock of the day by Zacks Investment Research.
Newpark Resources, Inc. (NYSE: NR) featured as the Value stock of the day by Zacks Investment Research.
Pepco Holdings Inc (NYSE: POM) Raised to Outperform with $23 price target objective by Credit Suisse.
Pharmacyclics Inc. (NASDAQ: PCYC) has been downgraded by RBC Capital Markets and by Global Hunter this morning.
Sears Holdings Corporation (NASDAQ: SHLD) was initiated as “Underperform” by a firm called Imperial Capital.
SIRIUS XM Radio Inc. (NASDAQ: SIRI) was initiated with a Buy rating and was assigned a $2.20 price target objective by Citigroup; Sirius was also featured as the Bull of the Day by Zacks Investment Research.
Texas Instruments Inc. (NYSE: TXN) lowered estimates and targets by Credit Suisse.
Yahoo! Inc. (NASDAQ: YHOO) Started as Market Perform by BMO.

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