David Chubak is one of the financial world's youngest influencers, leading a business that spans across global markets and serves more than 100 million customers, with 2,600 branches and 65,000 employees. With an eye to the future and an understanding of the past, he adheres to a philosophy that puts customer well-being first. Most recently, Chubak consolidated Citiâs global retail bank and consumer lending businesses and launched a digital banking strategy to ensure the bank meets the needs of the ever-evolving customer.