Stock trader to comply with in their respective jurisdictions; or that tax free stock market operations are useful to boost economic growth. Beyond these costs are the opportunity costs of money and time, currency risk, financial risk, and Internet, data and news agency services and electricity consumption expenses—all of which must be accounted for. Jerome Kerviel (Société Générale) and Kweku Adoboli (UBS), two rogue traders, worked in the same type of position, the Delta One desk - a table where derivatives are traded, and not single stocks or bonds. These types of operations are relatively simple and often reserved for novice traders
Jérôme Kerviel claim that throughout 2007, Kerviel had been trading profitably in anticipation of falling market prices; however, they have accused him of exceeding his authority to engage in unauthorized trades totaling as much as €49.9 billion, a figure far higher than the bank's total market capitalization. Bank officials claim that Kerviel tried to conceal the activity by creating losing trades intentionally so as to offset his early gains. According to the BBC, Kerviel generated in hidden profits at the beginning of 2008. His employers say they uncovered unauthorized trading traced to Kerviel on 2008. The bank then closed out these positions