Top Analyst Upgrades & Downgrades (ACM, ALNY, BIIB, BP, COF, SNP, CTSH, EA, EPB, ERJ, F, LPX, MFC, MM, RAX, SYNC, VRTX, WYNN)

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

AECOM Technology Corporation (NYSE: ACM) Cut to Underperform at BofA/ML.

Alnylam Pharmaceuticals, Inc. (NASDAQ: ALNY) Started as Overweight at JPMorgan.

Biogen Idec Inc. (NASDAQ: BIIB) Reiterated Buy with $145 target at Argus.

BP plc (NYSE: BP) Cut to Underweight at Barclays.

Capital One Financial Corp. (NYSE: COF) Raised to Hold from Sell at Argus.

China Petroleum & Chemical (NYSE: SNP), or Sinopec, named Bear of the Day at Zacks.

Cognizant Technology Solutions (NASDAQ: CTSH) Raised to Outperform at R.W. Baird.

Electronic Arts Inc. (NASDAQ: EA) Raised to Buy at Needham.

El Paso Pipeline Partners, LP (NYSE: EPB) Started as Outperform with $38 target at Credit Suisse.

Embraer SA (NYSE: ERJ) Cut to Neutral at Citigroup.

Ford Motor Co. (NYSE: F) maintained Buy with $19 target at Argus.

Louisiana-Pacific Corporation (NYSE: LPX) Raised to Buy at Deutsche Bank.

Manulife Financial (NYSE: MFC) named Bull of the Day at Zacks.

Millennial Media Inc. (NYSE: MM) Started as Neutral at Goldman Sachs; Started as Equal-weight at Morgan Stanley; Started as Equal-weight at Barclays.

Rackspace Hosting, Inc. (NYSE: RAX) maintained Neutral with $57 target at Goldman Sachs.

Synacor Inc. (NASDAQ: SYNC) Cut to Underperform at BofA/ML.

Vertex Pharmaceuticals (NASDAQ: VRTX) Raised to Equal-weight at Morgan Stanley.

Wynn Resorts Ltd. (NASDAQ: WYNN) Maintained Outperform with $166 target at Credit Suisse.

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