Groupe Bruxelles Lambert SA is a holding company, which invests, reinvests, owns, manages, and trades shares in companies.It operates through the following segments: Holding, Imerys, Webhelp, and Sienna Capital. The Holding segment manages investments, non-consolidated operating companies, and associates. The Imerys segment holds positions in performance materials, and high temperature and solutions business lines. The Webhelp segment specializes in customer experience and business process outsourcing. The Sienna Capital segment includes investment activities in Sienna Capital, ECP, Sagard, Sagard I and 3, PrimeStone, Backed, BDT Capital Partners Fund II, Kartesia, KKR Sigma Co-Invest II, Merieux Participations I and 2, Marcho Partners, Ergon opseo Long Term Value Fund, Matador Coinvestment, StreetTeam Software, and Carlyle International Energy Partners II. The company was founded on January 4, 1902 and is headquartered in Brussels, Belgium.