Black edge

"Steven A. Cohen is a Wall Street legend. Born into a middle class family in a decidedly upper class suburb on Long Island, he was unpopular in high school and unlucky with girls. Then he went off to Wharton, and in 1992 launched the hedge fund SAC Capital, which grew into a $15 billion empire. He cultivated an air of mystery and reclusiveness--at one point, owned the copyright to almost every picture taken of him--and also of extreme excess, building a 35,000 square foot house in Greenwich, flying to work by helicopter, and amassing one of the largest private art collections in the world.…