TAV Airports Holding was established as a joint venture between Bilkent Holding ve Akfen Holding in İstanbul in 1997.The agreement for the sale of 38% of TAV Airports’ shares to the Aéroports de Paris Group for US$ 874 million was signed on March 11, 2012. The share transfer was completed on May 16, 2012, following the fulfillment of prerequisites set forth in the share purchase agreement. On September 13, 2017, Tepe offered its 3% stake in TAV Airports to foreign investors through accelerated equity offering. Currently, Tepe has a 5.06% share and 44.33% of the Company is traded on the Istanbul Stock Exchange.
TAV Tepe Akfen Vie Yatırım Yapım ve İşletme A.Ş. was established in 1997 as a joint venture to construct the Istanbul Atatürk Airport International Terminal, its car park and related facilities.The main objective of the company is to offer and perform airport construction and financing, passenger terminal operations and related consultancy services at an international level. Tepe İnşaat has a 39% share in the company.
İDO İstanbul Deniz Otobüsleri Sanayi ve Ticaret A.Ş. was established in 1987 by Istanbul Metropolitan Municipality in order to contribute to solving sea transportation and traffic problems in İstanbul.Until that date, Citylines Authority of Turkish Sea Authorities was responsible for majority of sea transportation in İstanbul. However, after İstanbul Metropolitan Municipality established İstanbul Ulaşım ve Ticaret A.Ş., the transportation has reached a higher quality level. Established in 1987, İstanbul Ulaşım ve Ticaret A.Ş. changed its title in 1988 to İDO - İstanbul Deniz Otobüsleri Sanayi ve Ticaret A.Ş. In June 2011, İDO AŞ was privatized and TASS (Tepe-Akfen-Souter-Sera) Joint Venture Group took over the management of İDO and then the TASS-İDO merger took place. Tepe İnşaat has a 30% share in the company. Today, İDO offers service with 24 sea buses, 9 fast ferryboats, 18 car ferries, 53 ships on 16 lines to 28 destinations.
Artı Döviz Ticaret A.Ş. was established in 2000 by Tepe İnşaat, Akfen Holding and Sera Yapı to operate in the field of foreign exchange trade at the airports. The company still offers service with 15 stores in İstanbul Atatürk, Ankara Esenboğa, İzmir Adnan Menderes and Antalya Gazipaşa Airports. In May 2014, 75% of the company's shares were acquired by Travelex Group Investment Limited, a London-based leading company.
Founded in Washington, DC with the partnership of Tepe USA LLC, Tepe & Hisar LLC continues its activities in order to coordinate the investment projects of Tepe Insaat in America.