Carlos Slim Helú (Spanish pronunciation: “karlos eˈslim eˈlu” (born January 28, 1940) is a Mexican business magnate, philanthropist and the chairman and CEO of Telmex, América Móvil. His extensive holdings in a considerable number of Mexican companies through his conglomerate, Grupo Carso, SA de CV, amassed interests in the fields of communications, technology, retailing, and finance. As of January 2011, Carlos Slim is still the wealthiest person in the world with a personal net worth of above US$66.0 billion.