Top Analyst Upgrades & Downgrades (AMZN, BRK-A, BRK-B, CMCSA, FTO, POT, SVNT, STX, THC)

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

Amazon.com Inc. (NASDAQ: AMZN) Cut to Neutral at UBS.
Berkshire Hathaway Inc. (NYSE: BRK-B) Raised to Hold at Stifel Nicolaus.
Comcast Corporation (NASDAQ: CMCSA) Started as Buy at Goldman Sachs.
Frontier Oil Corp. (NYSE: FTO) Raised to Equal-Weight at Barclays.
Potash Corp. of Saskatchewan (NYSE: POT) Raised to Buy at Gleacher & Co.; Maintained Outperform at Credit Suisse.
Savient Pharmaceuticals Inc. (NASDAQ: SVNT) Maintained Underperform at BofA/ML.
Seagate Technology PLC (NYSE: STX) Cut to Underweight at JPMorgan.
Tenet Healthcare Corporation (NYSE: THC) Raised to Buy at UBS.

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JON C. OGG