Duff McDonald is a New York-based journalist and the author of Last Man Standing, a biography of JPMorgan Chase CEO and chairman, Jamie Dimon. A contributing editor at Fortune Magazine and The New York Observer, he has also written for Vanity Fair, The New York Magazine, Esquire, Business Week, Conde Nast Portfolio, GQ, WIRED, Time, Newsweek, and others. In 2004, he was the recipient of two Canadian National Magazine Awards--Best Business Story (gold) and Best Investigative Reporting (silver)--for Conrad's Fall in National Post Business.