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.

Budimex S.A. is a holding company. Through its subsidiaries, Co. is engaged in building, assembly and erection works in the scope of general industrial and engineering construction, electrical power construction & assembly, environmental protection, road and highway construction, water and sewage system construction, the rendering of design services and technical and business consulting and real estate development. Co. maintains activities in strategic segments of the market, such as road and bridge construction, general construction works (office, hotel and institutes of higher education), and ecological/environment-related construction.

Cimsa Cimento Sanayi ve Ticaret is engaged in the cement industry. Co. produces and sells cement and ready-mixed concrete. As of Dec. 31, 2004, Co. maintains 17 ready-mixed concrete plants in 8 provinces.

Rainbow Tours SA. Rainbow Tours SA is a Poland-based tour operator. The Company provides a range of tour options, including city tours, long-distance airplane trips, package holidays, last minute and last second trips, to various destinations worldwide. In addition, it offers online flight ticket reservation services. The Company has 77 branch offices throughout Poland. Additionally, the Company designs information technology (IT) solutions for tourist industry. As of December 31, 2011, the Company operated sevens subsidiaries, Portal Turystyczny Sp. z o.o., Rainbour Tours Biuro Podrozy Sp. z o.o., Travelovo Sp. z o.o., Traveltech Sp. z o.o., ABC Swiat Podrozy Sp. z o.o., Bee&Free sp. z o.o. and TravelLab sp. z o.o. On December 4, 2012, the Company sold its entire stake in TravelTech Sp. z o.o.

Ten Square Games SA is a Poland-based mobile games development company. The Company is focused on 3D simulation hobby games for people who seek outdoor experiences on their mobile devices, like fishing or hunting games. Its games are available on social platforms, a network of partner sites, as well as on Google Play, App Store and Microsoft Store.

Turk Hava Yollari is engaged in the airline industry with the airline flying to 103 destinations, throughout Turkey and internationally. As of the year end, Co. maintains 66 aircrafts with a total seat capacity of 10,672, and leases a A300-200 cargo aircraft. Co. has various services for their customers which include: various ways of checking in and on-line ticket sales.

Turkiye Is Bankasi is a commercial banking group based in Turkey Co. is engaged in the provision of private, retail, commercial and corporate banking, money market and securities market operations as well as international banking services. Co. provides services to corporations, SMEs and other trading companies (excluding real trading persons) within the course of its corporate and commercial operations. Co. is organized into two main business segments: Banking segment, which includes corporate, retail and private banking, as well as treasury; and non-banking operations, which are followed according to insurance, ‘investment and finance' and ‘manufacturing and trading' segments.

Turkiye Petrol Rafinerileri is an energy and refining company based in Turkey. Co. is engaged in providing and refining crude oil, the importing and exporting of oil products, and establishing and operating refineries in Turkey and foreign countries. Also, Co. is establishing and operating factories and facilities in the petrochemical industry. Co. is engaged in purchasing, selling, importing, exporting, storing, marketing and distributing (wholesale, retail, foreign and domestic) all kinds of petroleum products, LPG and natural gas. Co. runs its business through the refineries in Izmit, Izmir, Kirikkale and Batman.