2008 Société Générale trading loss on January 28, 2008 with abuse of confidence and illegal access to computers. He was released from custody a short time after. The charges filed carry a maximum three-year prison term. On January 29, 2008 investigating judges Renaud van Ryumbecke and Francoise Desset had rejected prosecutor Jean-Claude Marin's bid to charge Kerviel with the more serious crime of "attempted fraud" and refuse bail. Société Générale characterizes Kerviel as a rogue trader and claims Kerviel worked these trades alone, and without its authorization. Kerviel, in turn, told investigators that such practices are widespread and that getting a profit makes the hierarchy
2012 JPMorgan Chase trading loss journal reported on further tranche trading activity by the JP Morgan unit two months later. By 2012, heavy opposing bets to his positions had been made by traders, including another branch of JPMorgan, who purchased the derivatives that JPMorgan was selling in high volume. JPMorgan denied the first news reports, with CEO Jamie Dimon calling it a "tempest in a teapot." Major losses of $2 billion were reported by the firm in May 2012 in relation to these trades. On July 13, 2012, the total loss was updated to $5.8 billion with the addition of a $4.4 billion loss in