Analyst upgrades:
- Oppenheimer upgraded Viacom (NYSE: VIA, VIA.B) to Outperform from Perform following the better-than-expected Q3 results to reflect an improving outlook for all the company's segments. The firm raised its target on shares to $36.
- Deutsche Bank upgraded C.R. Bard (NYSE: BCR) to Buy from Hold on expectations the company's underlying growth trends will improve. The firm raised its target on shares to $88 from $78.
- Wells Fargo upgraded Cognizant (NASDAQ: CTSH) to Outperform from Market Perform. The firm upgraded the stock after Cognizant reported better-than-expected Q3 results.
- Plug Power (NASDAQ: PLUG) was upgraded to Sector Perform from Underperform at RBC Capital.
- Digital River (NASDAQ: DRIV) was upgraded to Buy from Hold at Collins Stewart and to Overweight from Neutral at Piper Jaffray.
- Steris (NYSE: STE) was upgraded to Overweight from Equal Weight at Stephens.
Today was one of those up-days that might be a disappointment to many bulls because the gap-ups were not met by follow-on buying throughout the day. A 
Closing Bell: Dubai sends jitters throughout the market (S, BBY)
Heinz looking good after the second quarter?
Why isn't Bank of America updating its shareholders on CEO situation?
