M&T Bank Corp. is a a bank holding company, which engages in the provision of retail and commercial banking, trust, wealth management and investment services, through its wholly owned subsidiaries, M&T Bank and Wilmington Trust NA. It operates through following segments: Business Banking, Commercial Banking, Commercial Real Estate, Discretionary Portfolio, Residential Mortgage Banking and Retail Banking. The Business Banking segment provides services to small businesses and professionals through the company's branch network, business banking centers and other delivery channels such as telephone banking, Internet banking and automated teller machines. The Commercial Banking segment offers credit products and banking services for middle-market and large commercial customers. The Commercial Real Estate segment includes credit and deposit services to its customers. The Discretionary Portfolio segment consists of investment and trading securities, residential mortgage loans and other assets, short-term and long-term borrowed funds, brokered certificates of deposit and interest rate swap agreements related thereto, and Cayman Islands branch deposits. The Residential Mortgage Banking segment comprises of residential mortgage loans and sells substantially all of those loans in the secondary market to investors. The Retail Banking segment offers services to consumers through several delivery channels which include branch offices, automated teller machines, telephone banking, and Internet banking. The company was founded in November 1969 and is headquartered in Buffalo, NY.