Bolsa de Madrid
The company's roots stretch back to May 1911 and the foundation of Sociedad General de Obras y Construcciones Obrascón, S.A., whose first project was the construction of two wharfs in the Port of Lisbon. The company grew over the decades, being acquired first by the Banco de Bilbao in 1953 and then by Altos Hornos de Vizcaya 20 years later. Obrascón fell into financial difficulties in the late 1980s, however, and was bought from bankruptcy for one penny in 1987 by Juan-Miguel Villar Mir, who remains the company's chairman today. Villar turned around the firm's fortunes and it listed on the Bolsa de Madrid in 1991.