Wintrust Financial Corporation, founded in 1991 by Edward J. Wehmer, is a publicly traded financial holding company (NASDAQ:WTFC) headquartered in Rosemont, Illinois. The firm operates through a network of community banks and specialized financial units offering personal and commercial banking, wealth management, mortgage origination, insurance premium financing, specialty finance, and treasury management services. With approximately $56 billion in assets and over $2 billion in annual revenue as of year-end 2023, Wintrust has expanded through strategic acquisitions, including during the 2008 financial crisis and its 2024 merger with Macatawa Bank, broadening its Midwest footprint. The company's leadership team, under CEO Timothy S. Crane, oversees a diversified model that combines community banking with advanced financial services. As a publicly listed company, Wintrust balances local market engagement with sophisticated, scalable solutions.