Bill Gates

William Henry "Bill" Gates III (born October 28, 1955) is an American business magnate, investor, programmer, inventor and philanthropist. Gates is the former chief executive and current chairman of Microsoft, the world’s largest personal-computer software company, which he co-founded with Paul Allen.

Larry Ellison

Lawrence Joseph "Larry" Ellison (born August 17, 1944) is an American businessman, best known as the co-founder and chief executive officer of Oracle Corporation, an enterprise software company. In 2013, Forbes listed him as the third-wealthiest man in America.

Amancio Ortega Gaona

Amancio Ortega Gaona born 28 March 1936) is a Spanish fashion executive and founding chairman of the Inditex fashion group, best known for its chain of Zara clothing and accessories retail shops.
The youngest of four children, Ortega was born in Busdongo de Arbás, León, Spain, and spent his childhood in León. He moved to A Coruña at the age of 14, due to the job of his father, a railway worker. Barely in his teens, Ortega found a job as a shop hand for a local shirtmaker called Gala, which still sits on the same corner in downtown A Coruña.

Carlos Slim Helú

Carlos Slim Helú was born January 28, 1940) is a Mexican business magnate, investor, and philanthropist. From 2010 to 2013, Slim was ranked as the richest person in the world, but that position has been regained by Bill Gates. His extensive holdings in a considerable number of Mexican companies through his conglomerate, Grupo Carso, SA de CV, have amassed interests in the fields of communications, technology, retailing, and finance. Presently, Slim is the chairman and chief executive of telecommunications companies Telmex and América Móvil.