Citigroup unit lost data for 3.9 million customers (C) By David Weidner - NewsFinder

NewsFinder:

"NEW YORK (MarketWatch) -- CitiFinancial, a unit of Citigroup (C) , on Monday said it is notifying 3.9 million branch network customers that their personal information had been lost. CitiFinancial said computer tapes containing the information were lost in transit to a credit bureau. Shares of Citigroup fell 18 cents to $47.38."