Jamie Dimon was a Psychology/Econ major at Tufts before being converted to the dark side at Harvard Business School. His company (JP Morgan) is known to frequent the Tufts campus attempting to lure others to the dark side.
In relative terms, I guess that he is generally viewed as one of the better “dark-siders”, if there is such a thing 
http://www.ellines.com/en/achievements/740-o-sotiras-tis-wall-street/