Jérôme Kerviel Jérôme Kerviel Jérôme Kerviel (; born 1977) is a French trader who was convicted in the 2008 Société Générale trading loss for breach of trust, forgery and unauthorized use of the bank's computers, resulting in losses valued at €4.9 billion. Société Générale characterizes Kerviel as a rogue trader and claims Kerviel worked these trades alone and without its authorization. These assertions have been met with skepticism by some of Kerviel's former colleagues and acquaintances, as well as by some members of the news media. Kerviel had told investigators that his trading behavior was widespread at the company and that making
Jérôme Kerviel experts have expressed skepticism of the bank's account, saying that a pattern of closing out trades within the three-day cycle alleged could not be accomplished given the immense sums involved. Kerviel is not thought to have profited personally from the suspicious trades. Prosecutors say Kerviel has been cooperative with the investigation, and has told them his actions were also practiced by other traders in the company. Kerviel admits to exceeding his credit limits, but claims he was working to increase bank profits. He told authorities that the bank was happy with his previous year's performance, and was expecting to be