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.

GIMV is a listed investment company, specializing in private equity and venture capital and active in small and medium buyouts, growth financing and technology investments. Co. is also present with technology investments across Europe and in Israel, Japan and the USA. Co. invests in ICT (Technology), environmentally friendly technology (Cleantech) and Life Sciences.

IBA- Ion Beam Applications develops and markets technologies and pharmaceutical products for the healthcare sector, with a focus on cancer diagnosis and therapy. Co. is also engaged in the sterilization and ionization market. Co. operates in two primary business segments: Equipment and Pharmaceuticals. Co.'s Equipment segment encompasses development, fabrication, and services associated with medical and industrial particle accelerators, proton therapy systems, and a range of dosimetry products, while Co.'s Pharmaceuticals segment encompasses the production and distribution of radiopharmaceutical agents as well as its bioassay operations.

Umicore is global player in the materials technology and recycling industries. Co. focuses on application areas such as chemistry, materials science, metallurgy and recycling. Co.'s business model comprises four segments: Catalysis, Performance Materials, Energy Materials and Recycling. Catalysis focuses on the abatement of global automotive emissions; Performance Materials focuses on materials that help develop more sophisticated and safer products; Energy Materials produces materials used in the production and storage of clean energy including rechargeable batteries and photovoltaics; and Recycling treats complex waste streams containing precious and other non-ferrous metals.