Moody's Corp. engages in the provision of credit ratings, research, tools and analysis to the global capital markets. It operates through the following segments: Moody's Investors Service (MIS) and Moody's Analytics (MA). Read More The MIS segment is a credit rating agency, which publishes credit ratings on debt obligations and the entities, including various corporate and governmental obligations, structured finance securities and commercial paper programs. The MA segment develops products and services, which support financial analysis and risk management activities of institutional participants in global financial markets. The company was founded by John Moody in 1900 and is headquartered in New York, NY. The listed name for MCO is Moody's Corporation.