(Bloomberg) -- When Ed Tilly walked onto the Chicago Board Options Exchange floor in 1987 — where trading pits teemed with sweaty men barking orders and flashing signals — the recent college graduate was hooked. Most Read from BloombergVegas’ Newest Resort Is a $3.7 Billion Palace, 23 Years in the MakingF-35 Debris Found After a $100 Million Fighter Jet Went MissingIndia, Canada Trade Diplomatic Blows Over Murder AllegationsVanderbilt Rips US News Over Slide in College RankingsMore than two deca