Co. is engaged in the manufacture and sale of clinker, cement and ready mixed concrete, establishment of facilities for the same or their purchase in part or in full.

Graphisoft Park SE Ingatlanfejleszto Europai Rt is a Hungary-based company engaged in the real estate operations. The Company operates as a holding and provides management, financial and administrative services to its subsidiaries. As of December 31, 2011, the Company operated two subsidiaries, Grpahisoft Park Kft, engaged in the real estate development; and Graphisoft Park Services Kft, responsible for property operation tasks. The total area of the Company's properties was nearly 18 hectares. As of December 31, 2011, the Company's two subsidiaries, Graphisoft Park Universitas Kft and GP3 Kft merged into Graphisoft Park Kft. As of December 31, 2011, the Company's parent entity was Graphisoft SE.

Mytilineos Holdings is an industrial group engaged in the sectors of Metallurgy, EPC, Energy, and Defence. Co. and its subsidiaries are engaged in three main operating business segments: Metallurgy, Constructions and Energy. Co. and its subsidiaries monitor its performance on Metallurgy and Mining Sector through the subsidiaries Aluminium S.A. (Alumina-Aluminium) and Sometra S.A. (Zinc-Lead). Co., through its subsidiary, METKA S.A., is an EPC Constructor in Greece.

Wizz Air Holding is a European airline. As of Mar 31 2017, Co. provided more than 500 routes from 28 bases, connecting 141 destinations across 42 countries. Co. has two reportable segments: the airline and the tour operator business units, marketed under the Wizz Air and Wizz Tours brand names, respectively. Wizz Air sells flight tickets and related services to external customers and, to an extent, to Wizz Tours. Wizz Tours sells travel packages to external customers covering the network of Wizz Air.