Pargesa Holding SA operates as an investment holding company, which acts in various industry and service sectors through its holdings in various operating companies. It operates through two segments: Holdings and Imerys. The Holdings segment focuses on the management of investments of Pargesa and Groupe Bruxelles Lambert and their wholly-owned subsidiaries and private equity funds. The Imerys segment comprises the Imerys group, which holds four business groups, such as Energy Solutions & Specialties, Filtration & Performance Additives, Ceramic Materials and High Resistance Minerals. The company was founded by Albert FrÃ¨re in 1981 and is headquartered in Geneva, Switzerland.