Mizuho Financial Group is a holding company. Through its subsidiaries, Co. provides banking, trust banking, securities and other financial services. Co.'s segments include: Retail and Business Banking Company, which provides financial services for individual customers, small and medium-sized enterprises and middle market firms; Corporate and Institutional Company, which provides financial services for corporations, financial institutions and public corporations; Global Corporate Company, which provides financial services for Japanese overseas affiliated corporate customers and non-Japanese corporate customers; and Global Markets Company, which invests in financial products with market risk.