Before the trading markets converted to software and technology, the most reliably frenzied places for pictures in photojournalism were at the exchanges here in Chicago. It was crazy fun and the traders usually enjoyed the attention. The changeover happened after I left Chicago to work in Los Angeles. Everything went fast and silent on the floor, but the stakes were just as high. Returning to Chicago, I didn’t see up close all of the big changes until asked to produce an image library of (mostly) documentary images at a firm that had a website relaunch. As a firm with a presence on the Chicago Board Options Exchange and NYSE AMEX, they were looking to convey their success, their training culture and the fun time had by their people. Underneath it all, you could feel the hum of intensity among the traders and the money that was all at stake.