Dillian rose from green associate, checking IDs at the entrance to the trading floor in the paranoid days following 9/11, to become an integral part of Lehman’s culture in its final years as the firm’s head Exchange-Traded Fund (ETF) trader. More than $1 trillion in wealth passed through his hands, but at the cost of an untold number of smashed telephones and tape dispensers. Over time, the exhilarating and explosively stressful job took its toll on him. The extreme highs and lows of the trading floor masked and exacerbated the symptoms of Dillian’s undiagnosed bipolar and obsessive compulsive disorders, leading to a downward spiral that eventually landed him in a psychiatric ward.