Sumitomo Mitsui Trust Holdings, Inc. (三井住友トラスト・ホールディングス株式会社, Mitsui Sumitomo Torasuto Hōrudingusu Kabushiki Gaisha), formerly Chuo Mitsui Trust Holdings, Inc., is a Japanese financial holding company headquartered in Chiyoda, Tokyo. It provides an assortment of financial products to retail and wholesale customers, with a focus on asset management, financial brokerage and real estate services.