Cullen/Frost Bankers, Inc. operates as the holding company for The Frost National Bank that offers commercial and consumer banking, and other financial products and services primarily in Texas. The company provides various commercial banking services to corporations and other business clients, such as financing for industrial and commercial properties; financing for equipment, inventories, and accounts receivable; acquisition financing; commercial leasing; and treasury management services. It also offers consumer banking services, including checking accounts, savings programs, automated teller machines, overdraft facilities, installment and real estate loans, home equity loans and lines of credit, deposit services, safe deposit facilities, and brokerage services; and international banking services comprising accepting deposits, making loans, issuing letters of credit, handling foreign collections, transmitting funds, and dealing in foreign exchange. In addition, the company operates as a correspondent for approximately 316 financial institutions; offers a range of trust, investment, agency, and custodial services for individual and corporate clients; and provides capital markets services, including sales and trading, new issue underwriting, money market trading, and securities safekeeping and clearance. As of December 31, 2011, it operated approximately 115 financial centers in the Austin, Corpus Christi, Dallas, Fort Worth, Houston, Rio Grande Valley, and San Antonio regions of Texas. Further, the company, through its other subsidiaries, provides insurance brokerage services; brokerage services, including the sale and purchase of securities; advisory and private equity services to middle market companies; and loans to qualified borrowers. It serves energy, manufacturing, services, construction, retail, telecommunications, healthcare, military, and transportation industries. Cullen/Frost Bankers, Inc. was founded in 1868 and is headquartered in San Antonio, Texas.