Klockner & Co is a holding company. Co. is engaged in the mill-independent distributor of steel and metal products and steel service center in the combined European and American market. Co.'s core business is the distribution of steel and non-ferrous metals as well as the operation of steel service centers. Co. concentrated mainly in the construction industry as well as the machinery and mechanical engineering industries. Co. also supplies intermediate products for the automotive, shipbuilding, and consumer goods industries, and provides customers solution from procurement through logistics to prefabrication, including individual deliveries and 24-hour service.

Olympique Lyonnais Groupe is a holding company. Through its subsidiaries, Co. is active in the following businesses: sporting events, media and sports entertainment, and complementary businesses. Co. is organized around Olympique Lyonnais football club, in Lyon, France and is engaged in the media and entertainment sector. It is articulated around five activities: Ticketing; Media rights; Sponsoring and advertising (adidas, BetClic-Everest Poker, Groupama, Araldite, MDA, Keolis and Renault Trucks); Brand-related revenue (derivative products, OL Images, etc.) and Player trading.

Pfeiffer Vacuum provides vacuum technology solutions. Co.'s products are divided into the areas of vacuum generation, vacuum measurement and analysis, installation elements, vacuum chambers and vacuum systems. It includes a range of hybrid and magnetically levitated turbopumps, oil-lubricated and drycompressing low and medium vacuum pumps, leak detectors, mass spectrometers and gauge heads. Co. manufactures vacuum chambers in cubical, cylindrical and bell-shaped designs. Co. also develops and manufactures vacuum systems for customer specific processes, such as testing components for the automotive and electronics industries, testing pressure vessels or packaging in the food industry.