Zions Bancorporation, National Association is a bank holding company headquartered in Salt Lake City, Utah. It is a public company and trades on the NASDAQ under the ticker symbol ZION. The company provides banking and related services through its subsidiaries, including Zions Bank, Amegy Bank, California Bank & Trust, National Bank of Arizona, Nevada State Bank, and Vectra Bank. Zions Bancorporation has over 400 branches and 500 ATMs across 11 Western and Southwestern states. The company was founded in 1873 and has grown through a series of mergers and acquisitions over the years.