Stocks that moved substantially or traded heavily Friday on the New York Stock Exchange and Nasdaq Stock Market:
Best Buy Co. Inc., up 78 cents at $24.22
The electronics retailer said sales in the critical month of December fell, but the company still reaffirmed its annual guidance.
Alcoa Inc., down 20 cents at $9.16
The aluminum producer said it plans to close an aluminum smelter in Tennessee and some operations at a Texas facility to cut costs.
Jazz Pharmaceuticals Inc., up $3.93 at $45.39
The pharmaceutical company said it expects a larger profit in 2012 after it completes its acquisition of Azur Pharma Ltd.
PriceSmart Inc., down $9.95 at $60.63
The operator of warehouse clubs in Latin America and the Caribbean said its fiscal first-quarter net income fell 6 percent.
Dendreon Corp., up $1.73 at $12.35
Sales of the drug developer's prostate-cancer therapy Provenge climbed to $82 million in the fourth quarter, the company said.
Chelsea Therapeutics International Ltd., down 41 cents at $4.89
The pharmaceutical company offered 4.3-million shares at a 10.4 percent discount to the stock's Thursday closing price to raise funds.
Coinstar Inc., down $2.39 at $40.98
A Morgan Keegan analyst downgraded the company's stock saying its Redbox DVD rental kiosks unit needs a digital streaming strategy.
Regeneron Pharmaceuticals Inc., up $4.85 at $65.79
A Jefferies analyst upgraded the biopharmaceutical company's stock to "Buy" citing strong demand for its vision loss treatment.