Stocks that moved substantially or traded heavily Thursday on the New York Stock Exchange and Nasdaq Stock Market:
Boston Beer Co. Inc., down $17.71 at $131.94
The brewer of Samuel Adams beer boosted its full-year 2012 earnings forecast to a level above what Wall Street expected.
Best Buy Co. Inc., up $1.94 at $14.12
Media reports said that the founder of the electronics retailer may make a bid for the company for as much as $6 billion.
Pep Boys - Manny, Moe & Jack, up 33 cents at $10.07
The automotive retail chain said that its board of directors approved a program to repurchase up to $50 million of its common stock.
Brinker International Inc., up 82 cents at $31.59
Citing its growing market share, a Citi analyst began coverage of the restaurant operator and Chili's owner with a "Buy" rating.
CVS Caremark Corp., up 96 cents at $48.50
The drugstore operator issued a 2013 profit prediction above expectations and announced an increase to its quarterly cash dividend.
Clearwire Corp., up 41 cents at $3.16
Wireless carrier Sprint Nextel Corp. offered to buy out the minority shareholders of the wireless network operator for $2.1 billion.
Rigel Pharmaceuticals Inc., down $2.92 at $5.51
Rigel and its partner AstraZeneca reported that their experimental rheumatoid arthritis drug performed worse than Abbott's Humira.
Zagg Inc., up 71 cents at $7.82
The mobile device accessories maker announced that its board of directors approved a $10 million share-repurchasing program.