Sedef Grup Competitors

Tekfen Holding ve bağlı grup şirketleri, konusuna odaklı, işini etik değerler çerçevesinde en iyi şekilde yapan ve 70 yıllık bilgi birikimiyle fark yaratmayı başaran bir şirketler topluluğudur. Temelleri 1956 yılında üç genç inşaat mühendisi merhum; Feyyaz Berker, Nihat Gökyiğit ve Necati Akçağlılar tarafından atılan Tekfen Grubu, günümüzde 38 şirket ve 13 iştiraki bünyesinde bulunduran ve 12 bin kişiye istihdam sağlayan halka açık bir şirketler topluluğudur. Grup, faaliyetlerini Taahhüt, Tarımsal Sanayi ve Yatırım olmak üzere üç ana başlık altında sürdürmektedir. Tekfen Holding, sahip olduğu markalar ve pazar gücünün yanı sıra temsil ettiği değerlerle de Türk iş dünyasının önde gelen temsilcilerinden biridir. Tekfen Holding; a publicly traded company, with its affiliates, heads a specialized group of companies operating optimally to the highest ethical standards. Tekfen has created a difference through 70 years of accumulated expertise. Tekfen Group is a publicly traded group of companies consisting of 38 companies and 13 subsidiaries, and 12,000 employees. Founded in 1956 by three young civil engineers, the late Feyyaz Berker, Nihat Gökyiğit and the late Necati Akçağlılar, today the Group operates in three core business areas: Contracting, Agri-Industry and Investment. The Group is a leader in the Turkish business world, not only for its brands and market strength, but also for the values it represents.

Doğuş Construction and Trade Inc. is considered a world-class leader in the construction sector, having completed over 260 mega-infrastructure and superstructure projects since 1951 with a total value of USD 35 billion. It has operated within joint ventures and consortiums with many international companies in projects across Türkiye, Middle East, North Africa, Eastern Europe and Gulf Countries, and has featured in ENR’s annual list of the world's top 250 construction companies since 2003. Doğuş Construction’s impressive and diverse portfolio of projects includes 1580 km of roads, 52 km of bridges and viaducts, over 560 km of subways, railways and tunnels, and 21 dams and hydroelectric power plants capable of producing 3350 MW of electricity. Also, the Company implemented 6,2 million square meter building construction including real estate investments. As well as being a leader in the construction sector, Doğuş Construction and Trade Inc. is also considered a leader in economic and social development. As a result of the certification process conducted by Happy Place to Work® Türkiye, Doğuş Construction was awarded the “Excellent Employee Experience Certificate and Award” in 2026 in the 3,000–4,000 employee category. Following the certification process, and based on the evaluations of an independent Scientific Committee, the company also succeeded in being included in Türkiye’s Happiest Workplaces List in the “Construction” category. Doğuş Construction is audited by BSI which is the world's leading provider of independent assessment services, and has qualified to receive the following certificates: ISO 9001:2015 Quality Management System; ISO 45001:2018 Occupational Health and Safety Management System; and ISO 14001:2015 Environmental Management System. These policies are applicable to general contracting, design, procurement, project management, construction, installation, erection and commissioning works for domestic and international projects.

Temelleri Koloğlu ailesi tarafından Elazığ’da atılan Koloğlu Holding, her geçen yıl güçlenerek ve farklı sektörlerde çeşitlenerek büyümeye devam ediyor. 1976 yılında grubun ilk şirketi Kolsan ve 1977 yılında Holdingin “Amiral Gemisi” Kolin İnşaat ile başlayan yolculuk, inşaattan enerjiye, madencilikten turizme, liman ve tersane işletmeciliğinden endüstriyel üretime kadar pek çok farklı sektördeki yatırımlarla sürüyor. Sürdürülebilir kalkınmaya inanan Koloğlu Holding, çevresel ve sosyal sorumluluklarının bilinciyle insan kaynaklarına yatırım ve toplumsal sorumluluk ilkeleri doğrultusunda faaliyetlerini yürütüyor. _________________________________________________ Koloğlu Holding, whose foundations were laidfounded by the Koloğlu family in Elazığ by the Koloğlu family, continues to grow by diversifying in different sectors and getting stronger every year and diversifying in different sectors. The journey, which started with Kolsan, the first company of the group established in 1976, and Kolin Construction, the "Flagship" of the Conglomerate established in 1977, continues with investments in many different sectors varying from construction to energy, from mining to tourism, from port operation and shipyard management and to industrial production. Believing Relying onin sustainable development, Koloğlu Holding carries out its activities with the awareness of its environmental and social responsibilities to the community and in line with the principles of investment in human resources and social responsibility projects. with the awareness of its environmental and social responsibilities.