ACS, Actividades de Construcción y Servicios, S.A. is a Spanish company dedicated to civil and engineering construction, all types services and telecommunications. It is one of the leading construction companies in the world, with projects in many countries around the world. The company was founded in 1997 through the merger of OCP Construcciones, S.A. and Ginés Navarro Construcciones, S.A. The group has a presence in Germany, India, Brazil, Chile, Morocco and Australia. The headquarters are in Madrid and the chairman is Florentino Pérez. Listed on the Bolsa de Madrid, the company's shares form part of the IBEX 35 stock market index.