Top Analyst Upgrades and Downgrades (BIIB, CNK, DECK, EXA, HGSI, IMAX, KBH, MAR, MDC, MOS, NVR, ONXX, RGC, RYL, SLB, SRE, VRSN, WAG)

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

Biogen Idec Inc. (NASDAQ: BIIB) started as Outperform at Leerink Swann.

Cinemark Holdings (NYSE: CNK) started as Neutral at Goldman Sachs.

Deckers Outdoor Corp. (NASDAQ: DECK) cut to Underperform at Stern Agee.

Exa Corp. (NASDAQ: EXA) started as Buy at Canaccord Genuity and started as Buy at Needham.

Human Genome Sciences Inc. (NASDAQ: HGSI) cut to Hold at Maxim Group.

IMAX Corp. (NYSE: IMAX) started as Buy at Goldman Sachs.

KB Home (NYSE: KBH) raised to Buy at Goldman Sachs.

Marriott International (NYSE: MAR) maintained as Buy but removed from Conviction Buy List at Goldman Sachs.

MDC Holdings (NYSE: MDC) raised to Conviction Buy List at Goldman Sachs.

Mosaic Co. (NYSE: MOS) raised to Buy at Citigroup.

NVR Inc. (NYSE: NVR) cut to Sell at Goldman Sachs.

Onyx Pharmaceuticals, Inc. (NASDAQ: ONXX) raised to Buy at Jefferies.

Regal Entertainment Corp. (NYSE: RGC) started as Neutral at Goldman Sachs.

Ryland Group (NYSE: RYL) raised to Neutral at Goldman Sachs.

Schlumberger Ltd. (NYSE: SLB) raised to Buy at Argus.

Sempra Energy (NYSE: SRE) cut to Hold at Argus.

VeriSign Inc. (NASDAQ: VRSN) cut to Neutral at Citigroup.

Walgreen Co. (NYSE: WAG) cut to Neutral at UBS.