"It's the last and most important thing I'll ever deal with, and we all want to get that exactly right." Dimon has led JPMorgan for 18 years and is one of the most influential figures in corporate America. The 68-year-old is credited with driving the bank's record profits, market share gains, and consistent outperformance of rivals. Under his leadership, JPMorgan became the largest bank in the US by assets in 2008 when it acquired Washington Mutual during the global financial crisis. Dimon is also the only CEO among the six largest US lenders to have led through that crisis. When last year's regional banking turmoil threatened to destabilize the industry, Dimon acquired First Republic, making JPMorgan even larger. Born to a Greek family in Queens, New York, Dimon earned his bachelor's degree from Tufts University and an MBA from Harvard Business School. Under the mentorship of former Citigroup CEO Sandy Weill, Dimon built a reputation as a savvy operator and strict cost-cutter.