Top Analyst Upgrades & Downgrades (ACI, DNDN, RE, GM, HERO, JBLU, ERIC, POOL, REE, X, VIA-B, VVUS, WFC)

These are some of the top analyst upgrades, downgrades, and initiations seen from Wall Street research calls this Tuesday morning.

Arch Coal Inc. (NYSE: ACI) Raised to Buy at Brean Murray; Reiterated Buy at Argus.
Dendreon Corporation (NASDAQ: DNDN) Reiterated Buy at Needham.
Everest Re Group, Ltd. (NYSE: RE) Maintained Underperform as Bear of the Day at Zacks.
General Motors Company (NYSE: GM) Raised to Buy at UBS.
Hercules Offshore, Inc. (NASDAQ: HERO) Raised to Outperform at FBR.
JetBlue Airways Corporation (NASDAQ: JBLU) Reiterated Hold at Argus.
LM Ericsson Telephone Co. (NASDAQ: ERIC) Raised to Neutral at JPMorgan.
Pool Corporation (NASDAQ: POOL) Raised to Outperform as Bull of the Day at Zacks.
Rare Element Resources Ltd. (AMEX: REE) Started as Buy at Dahlman Rose.
U.S. Steel Corporation (NYSE: X) Reiterated Buy at Argus.
Viacom Inc. (NYSE: VIA-B) Raised to Buy at BofA/ML.
VIVUS Inc. (NASDAQ: VVUS) Reiterated Buy at Needham.
Wells Fargo & Co. Inc. (NYSE: WFC) Reiterated Sell at Argus.

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JON C. OGG