MS&AD Holdings is a listed holding company with five directly invested Group insurance companies in Japan: Mitsui Sumitomo Insurance Co., Ltd. (MSI), Aioi Nissay Dowa Insurance Co., Ltd. (ADI), Mitsui Direct General Insurance Co., Ltd. (Mitsui Direct), Mitsui Sumitomo Aioi Life Insurance Co., Ltd. (MSI Aioi Life) and Mitsui Sumitomo Primary Life Insurance Co., Ltd. (MSI Primary Life); and seven affiliated operating companies: InterRisk Research Institute & Consulting, Inc., MS&AD Business Support Co., Ltd., MS&AD Staffing Service Co., Ltd., MS&AD Systems Co., Ltd., MS&AD Business Service Co., Ltd., MS&AD Research Institute Co., Ltd. and ANSHIN DIAL Co., Ltd.
MS&AD Insurance Group is challenging to be the world's top level insurance and financial group.