Zions Bancorporation is a bank holding company headquartered in Salt Lake City, Utah, USA. Among its subsidiaries are Amegy Bank of Texas, California Bank & Trust, National Bank of Arizona, Nevada State Bank, the Commerce Bank of Oregon, the Commerce Bank of Washington, Vectra Bank Colorado, Zions First National Bank, Zions Agricultural Finance, Zions Bank Capital Markets, Zions Credit Corporation, Zions Direct, Zions Management Services Company, Zions Public Finance, Zions Small Business Finance, and Contango Capital Advisors. As of June 30, 2008, it had $54.6 billion in assets and approximately 11,000 employees. It is a member of the S&P 500. read more