Late last week, a little-known trader at JPMorgan Chase & Co. (JPM) in London, Bruno Iksil, awoke to find his life changed forever. In an instant, Iksil had become famous as the guy who infuriated some of his bank’s counterparts so much that they complained to Bloomberg News journalists he was skewing the credit-derivatives markets with his outsized bets, one of which they said may be as large as $100 billion. Worse yet, the world learned Iksil had earned two unforgettable nicknames: (1) The London Whale, and (2) Voldemort, after the Harry Potter villain. One sobriquet would be bad enough. But two? For a single ... (full story)