MassMutual, or Massachusetts Mutual Life Insurance Company, is a mutual life insurance company founded in 1851. It provides a range of financial products, including life insurance, retirement planning, and investment services. As a mutual company, it is owned by its policyholders, which means profits are returned to them in the form of dividends. The company is headquartered in Springfield, Massachusetts, and operates across the United States. MassMutual is known for its strong financial stability and has received high ratings from various credit rating agencies. It aims to help individuals and families achieve financial security through its diverse offerings.