According to the BBC, Kerviel generated €1.4 billion in hidden profits at the beginning of 2008.[20] His employers say they uncovered unauthorized trading traced to Kerviel on 19 January 2008. The bank then closed out these positions over three days of trading beginning 21 January 2008, a period after which the market experienced a large drop in equity indices, and losses attributed are estimated at €4.9 billion ($7 billion).
losing trades intentionally