Top Analyst Upgrades & Downgrades (ARMH, BIG, CHKM, CSCO, CPWM, DLB, HGSI, JDSU, LINE, MMM, NOV, ORCL, RGP, TPX, TLLP, TEVA, VRTX)

These are some of the top analyst upgrades, downgrades and initiations seen in Wall Street research calls this Thursday.

ARM Holdings PLC (NASDAQ: ARMH) Raised to Market Perform at Bernstein.

Big Lots Inc. (NYSE: BIG) Raised to Overweight at Barclays.

Chesapeake Midstream Partners, L.P. (NYSE: CHKM) Started as Outperform at Credit Suisse.

Cisco Systems Inc. (NASDAQ: CSCO) Reiterated Buy with $24 target at Argus.

Cost Plus Inc. (NASDAQ: CPWM) Cut to Neutral at Wedbush.

Dolby Labs, Inc. (NYSE: DLB) Cut to Neutral at JPMorgan.

Human Genome Sciences Inc. (NASDAQ: HGSI) Cut to Market Perform at Leerink Swann.

JDS Uniphase Corporation (NASDAQ: JDSU) Raised to Buy at UBS.

Linn Energy, LLC (NASDAQ: LINE) Started as Outperform at Credit Suisse.

3M Co. (NYSE: MMM) Cut to Market Perform at Bernstein.

National Oilwell Varco Inc. (NYSE: NOV) Maintained Buy but cut target to $90 at Argus.

Oracle Corporation (NASDAQ: ORCL) Cut to Hold at ThinkEquity.

Regency Energy Partners LP (NYSE: RGP) Started as Outperform at Credit Suisse.

Tempur-Pedic International Inc. (NYSE: TPX) Raised to Strong Buy at Raymond James.

Tesoro Logistics LP (NYSE: TLLP) Started as Outperform at Credit Suisse.

Teva Pharmaceutical Industries Limited (NASDAQ: TEVA) Cut to Hold at Needham.

Vertex Pharmaceuticals Incorporated (NASDAQ: VRTX) Cut to Outperform at RBC.

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JON C. OGG