Société Générale is the second largest bank in France, behind BNP Paribas, and one of the 10 biggest euro zone banks. Better known as SocGen, its reputation was dented after news that a rogue trader, Jerome Kerviel, had lost it more than the equivalent of US$7 billion. Kerviel was subsequently sentenced to three years in jail, and the bank won a 4.9 billion euro judgement against Kerviel.