2008 Société Générale trading loss taken massive fraudulent directional positions in 2007 and 2008 far beyond his limited authority" and that the trades involved European stock index futures. Though bank officials say Kerviel apparently worked alone, skeptics question how unauthorized trading of this magnitude could go unnoticed. Kerviel's unassuming background and position have heightened the skepticism that he worked alone. Some analysts suggest that unauthorized trading of this scale may have gone unnoticed initially due to the high volume in low-risk trades normally conducted by his department. The bank said that whenever the fake trades were questioned, Kerviel would describe it as a mistake then
2011 UBS rogue trader scandal Adoboli to cause over $2 billion losses through unauthorized trading in London. 2011 UBS rogue trader scandal The 2011 UBS rogue trader scandal caused a loss of over US$2 billion dollars at Swiss bank UBS, as a result of unauthorized trading performed by Kweku Adoboli, a director of the bank's Global Synthetic Equities Trading team in London in early September 2011. On 24 September 2011, Oswald Grübel, the CEO of UBS, resigned "to assume responsibility for the recent unauthorized trading incident", according to a memo to UBS staff. On 5 October Francois Gouws and Yassine Bouhara, the co-heads of Global