Kweku. He stole 2 billion dollars. The Bank that employed him lost 4 billion dollars of its market value. He was trying to follow the Swiss Frank before it was pegged to the Euro. For Kweku, a "honest" error; for the Swiss, a cultural blind spot. Their Clients would have moved their life saving to the Jewish usurers on the corner if they knew that those arrogant Swiss had Kweku investing their money.