Online radio company also raises revenue forecast for fiscal year

The PC maker’s stock takes a drubbing after it highlighted the effect of macroeconomic worries and the impact of tablets and smartphones on consumer PCs. One analyst called the latter the “Apple effect.”

NetApp Inc., Hewlett-Packard Co., Pandora Media Inc., Costco Wholesale Corp. and H.J. Heinz are among the stocks that could see active trading on Thursday.

MarketWatch’s daily rundown of stocks making sizable moves in the U.S. market.

Data-storage company’s shares fall more than 20% in after-hours as forecast fails to meet analysts’ expectations.

H-P shares as results beat expectations and the company unveils plan to cut 27,000 jobs, or 8% of its workforce.

Losses add up for Nasdaq OMX as investors gauge the financial hit the firm will take to quell the uproar over the botched Facebook IPO, as well as the cost to their reputations, but the broader financials sector finish modestly higher.

Canadian stocks market recoups losses to finish 1% higher on Wednesday as gold miners rebound sharply to lift the broader market.

Social network notches first notable gains since controversial IPO. Dell slides 17% on results, outlook.

H-P shares as results beat expectations and the company unveils plan to cut 27,000 jobs, or 8% of its workforce.