Zürcher Kantonalbank (ZKB) is a Swiss commercial bank established in 1870 and headquartered in Zurich, Switzerland. As an independent public-law institution wholly owned by the canton of Zürich, it offers a comprehensive range of banking and financial services, including savings and investment accounts, mortgage loans, investment management, and advisory services. ZKB is the largest cantonal bank and one of the largest banks in Switzerland, serving private, corporate, and institutional clients with strong regional roots and an international network.