Ackermans & Van Haaren is an investment company. Co. operates in five sectors: Marine Engineering & Infrastructure, which includes DEME NV, a dredging and marine company; Private Banking, which includes BDM NV - Continentale Verzekeringen NV (ASCO NV), which focuses on marine and industrial insurance via brokers; Real Estate, Leisure & Senior Care, which includes Extensa Group NV, a real estate developer; Energy & Resources, which includes Telemond Group, a supplier to the crane and automotive industry; and Development Capital, which is engaged in ICT and engineering, retail and distribution, real estate development, and media and printing.

Euronext is a cross-border exchange. Co. operates combined regulated markets across Belgium, France, the Netherlands, Portugal and the United Kingdom (derivatives only). Co. offers a range of integrated services including the listing of financial instruments, trading in securities and derivatives, clearing, netting and settlement, market data dissemination and IT solutions and support. Co.'s customers include listed companies, members, institutional and individual investors who trade on Co. markets, other organizations, notably exchanges that use its technologies and services, and users of the financial and information generated by market activity.

Galapagos is a clinical-stage biotechnology company specialized in the discovery and development of small molecule medicines with novel modes of action, addressing disease areas of high unmet medical need. Execution on its proprietary drug target discovery platform has delivered a pipeline that consists of three Phase 2, three Phase 1, five pre-clinical, and 20 discovery programs in inflammation, cystic fibrosis, or CF, osteoarthritis, and other indications. Co.'s highly flexible platform offers applicability across a broad set of therapeutic areas. Co.'s programs include filgotinib, GLPG1837, GLPG1690, GLPG2222, GLPG1972.

Groupe Bruxelles Lambert is a holding company. Through its subsidiaries, Co. operates through the following segments: Imerys, which consists of the Imerys group that operates in four business lines of energy solutions and specialties, filtration and performance additives, ceramic materials, and high resistance minerals; and Financial Pillar, which includes, on the one hand, under investment activities, the companies Sienna Capital, Ergon Capital Partners (ECP), ECP II, ECP III, PAI Europe III, Sagard, Sagard II and Sagard III, Kartesia and Merieux Participations I and II and, on the other hand, under consolidated operating activities, the operating subsidiaries of ECP III.