Top Analyst Upgrades, Downgrades, Initiations (BRK-A, CMCSA, MDT, TAP, NVAX, LNUX, THQI, YMI)

These are this mornings top analyst upgrades, downgrades, and initiations seen early this Thursday from Wall Street research calls:

Berkshire Hathaway Inc. (BRK-A) was put on CreditWach (negative) on Wednesday afternoon, which would take the AAA away to match where Moody’s already is.
Comcast (CMCSA) Cut to Hold at Collins Stewart.
Medtronic (MDT) Raised to Outperform at Credit Suisse.
Molson Coors (TAP) Cut to Neutral at Goldman Sachs.
NovaVax (NVAX) Started as Buy at Merriman Curhan.
SourceForge (LNUX) Cut to Neutral at Merriman.
THQ Inc. (THQI) Cut to Hold at Deutsche Bank.
YM BioSciences (YMI) Started as Buy at Merriman Curhan.

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JON C. OGG