Stocks that moved substantially or traded heavily Friday on the New York Stock Exchange and Nasdaq Stock Market:
Barnes & Noble Inc., up 62 cents at $14.97
British publisher Pearson PLC said it is investing in the book seller's NOOK unit, paying $89.5 million for a 5 percent stake.
Hewlett-Packard Co., down 36 cents at $13.68
The Department of Justice is investigating HP's unit Autonomy, which the computer maker has accused of fudging its accounting.
Herbalife Ltd., up $1.09 at $29.39
Shares of the nutritional supplements company continued to rise ahead of its analyst day meeting to discuss its business model.
Tower International Inc., up 63 cents at $8.07
The metal company said that it sold its Korean business in order to strengthen the company and increase shareholder value.
MagicJack VocalTec Ltd., up $1.67 at $17.95
The internet phone company named a new chief executive officer and issued a strong forecast for its fourth quarter.
Synchronoss Technologies Inc., up 68 cents at $21.17
The mobile services company bought NewBay from Research In Motion Ltd. for $55.5 million to expand its cloud-based services.
Canadian Solar Inc., down 10 cents at $3.27
The solar panel maker completed the purchase of two solar power projects from MEMC Electronic Materials Inc.'s SunEdison unit.
Omeros Corp., down 52 cents at $5.32
The biopharmaceutical company said that its knee surgery drug, OMS103HP, did not meet its main goal in a late-stage clinical trial.