Swiss bank UBS says a "rogue trader" in its investment bank has generated $2 billion in losses by making unauthorized trades. Kweku Adoboli, 31, was arrested this morning by police in London. Louise Cooper, analyst for BGC Partners, a firm specializing in financial services, talks about how this could have happened.
Sign up for our daily newsletter
Sign up for The Top of the World, delivered to your inbox every weekday morning.