Hochtief AG is a global provider of infrastructure technology and construction services, with locations in North America, Australia, and Europe. The Essen based company is primarily active in the fields of high tech, energy transition, and sustainable infrastructure. With the international projects making up 95% of the company's revenue, Hochtief was among the largest international construction firms in 2023. In Australia, the group is active through its subsidiary Cimic. Via its wholly owned subsidiary Turner, Hochtief is a leader in commercial construction in the United States. Since June 2018, Hochtief has held a 20% stake in Abertis. Abertis directly owns 99.1% of the toll road operator Abertis Infraestructuras. Since ACS Group first acquired shares in Hochtief in 2005, it has increased its shareholding to 75.71% in 2023. Wikipedia