Comerica is a financial services company headquartered in Dallas, Texas, operating primarily as a commercial bank through three business segments: The Commercial Bank, The Retail Bank, and Wealth Management. Founded in 1849 in Detroit as the Detroit Savings Fund Institute, the company adopted the Comerica name in 1982 and relocated its corporate headquarters from Detroit to Dallas in 2007. The bank operates 406 branches across five states, with the largest concentrations in Michigan, Texas, and California. In February 2026, Fifth Third Bank completed its acquisition of Comerica for $10.9 billion, creating the ninth-largest bank in the United States with approximately $294 billion in combined assets.