Zacks Research lowered shares of Zions Bancorporation, N.A. Zions Bancorporation, N.A. Zions Bancorporation, N.A. It operates through Zions Bank, California Bank & Trust, Amegy Bank, National Bank of Arizona, Nevada State Bank, Vectra Bank Colorado, and The Commerce Bank of Washington segments. Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for Zions Bancorporation N.A.