Carlos Slim Helú ( Spanish pronunciation: [ˈkaɾlos esˈlin eˈlu]; born 28 January 1940) is a Mexican business magnate, investor, and philanthropist. [1] [2] From 2010 to 2013, Slim was ranked as the richest person in the world by the Forbes business magazine. [3] [4] He derived his fortune from his extensive holdings in a considerable dOAxoyf.