Mitsui Sumitomo Trust is a major financial institution in Japan, primarily engaged in banking, asset management, and real estate services. Established in 1925, it has grown to become one of the largest trust banks in the country, offering a wide range of financial products to both individual and corporate clients. The bank operates under the umbrella of Mitsui Sumitomo Trust Holdings, Inc., which is publicly traded and has a strong presence in the Japanese financial market. Its services include investment trusts, pension fund management, and real estate investment, catering to diverse customer needs while focusing on sustainable growth.