Sumitomo Mitsui Trust Bank

Sumitomo Mitsui Trust Bank is Japan's largest trust bank and the fifth-largest commercial bank overall measured by assets. Headquartered in Tokyo, it forms the core operating company of Sumitomo Mitsui Trust Group, providing comprehensive trust banking, commercial banking, and financial services to retail and wholesale customers.

With paid-in capital of ¥342 billion and substantial total assets, the bank offers specialized services across six major business segments: Retail Business, Corporate Business, Investor Services Business, Real Estate Business, Global Markets Business, and Asset Management Business. The bank serves individual investors, corporations, institutional investors, and government entities throughout Japan and internationally.

Sumitomo Mitsui Trust Bank has no direct capital relationship with Sumitomo Mitsui Financial Group, despite similar naming. Both institutions are descended from the historical Sumitomo and Mitsui conglomerates but operate as independent banking groups.