Shares of Dell Inc. fell after it reported weaker-than-expected revenue and profit for the third quarter as the computer maker missed out on a fledgling rebound in technology spending.

Retailer Gap Inc. said its sales are improving after a tough few years, and a big advertising push this holiday season could boost sales -- but analysts caution that a rebound may be bumpy given the rough retail environment.

Shares of CSX Corp. edged down in premarket trading as an analyst downgraded the railroad, saying its share price has moved too high.