Top Analyst Upgrades & Downgrades (AMZN, BIDU, BHP, CVC, GOOG, HAL, INTU, NFLX, OPEN, QGEN, RVSN, SHLD, SZYM, TSO, WAC)

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

Amazon.com Inc. (NASDAQ: AMZN) Started as Neutral at Collins Stewart.
Baidu, Inc. (NASDAQ: BIDU) Started as Buy at Collins Stewart.
BHP Billiton (NYSE: BHP) Raised to Outperform as Bull of the Day at Zacks.
Cablevision Systems Corporation (NYSE: CVC) Cut to Sell at S&P Equity Research (late Tuesday call).
Google Inc. (NASDAQ: GOOG) Started as Buy at Collins Stewart.
Halliburton Co. (NYSE: HAL) Reiterated Buy and Raised Target to $63 at Argus.
Intuit Inc. (NASDAQ: INTU) Cut to Equal-Weight at Morgan Stanley.
Netflix, Inc. (NASDAQ: NFLX) Cut to Neutral at Merriman Capital.
OpenTable, Inc. (NASDAQ: OPEN) Started as Buy at Collins Stewart.
Qiagen NV (NASDAQ: QGEN) Started as Buy at BofA/ML.
Radvision Ltd. (NASDAQ: RVSN) Cut to Market Perform at Morgan Keegan (late Tuesday call).
Sears Holding Corp. (NASDAQ: SHLD) Maintained Underperform as Bear of the Day at Zacks.
Solazyme, Inc. (NASDAQ: SZYM) Started as Buy at Goldman Sachs; Started as Overweight at Morgan Stanley.
Tesoro Corporation (NYSE: TSO) Raised to Overweight at Barclays.
Walter Investment Management Corp. (NYSE: WAC) Started as Neutral at Credit Suisse.

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JON C. OGG