TCF Financial Corporation, formerly Chemical Financial Corporation, is a financial holding company. The Company operates in the commercial banking segment. The Company, through its subsidiary bank, Chemical Bank, offers banking and fiduciary products and services. These products and services include business and personal checking accounts, savings and individual retirement accounts, time deposit instruments, residential and commercial real estate financing, commercial lending, consumer financing, access to insurance and investment products, corporate and personal wealth management services, and other banking services. As of December 31, 2016, the Corporation and Chemical Bank served these markets through 249 banking offices. In addition to the banking offices, Chemical Bank operated eight loan production offices and over 272 automated teller machines, both on- and off-bank premises, as of December 31, 2016. Its loan portfolio includes commercial and real estate construction.