He changed the company into a holding company, and created Nissan Konzern Company Group, which owned many publicly held holding companies such as Nissan Motors, Nippon Mining, Hitachi, Nissan Chemicals, Nichiyu, Nichirei Corporation, Japan Coal Mine, Nissan Fire Insurance and Nissan Mutual Life Insurance.
会社を持株会社に変更し、公開持株会社として傘下に、日産自動車、日本鉱業、日立製作所、日産化学、日本油脂、ニチレイ、日本炭鉱、日産火災、日産生命など多数の企業を収め、日産コンツェルンを形成。