Marco Antonio Slim Domit is the second eldest son of Mexican business mogul Carlos Slim. His father Carlos Slim was listed as the richest person in the world between 2010 and 2013 by Forbes. Marco Antonio primarily manages the financial side of their family’s business empire.^[1]

In 1992, Marco Antonio Slim Domit became the director-general of Seguros Inbursa, which operates as a subsidiary of Grupo Financiero Inbursa and provides casualty, life, and home insurance to Mexican people. The nex year, Banco Inbursa was founded to provide banking services to individuals as well as small and medium enterprises, and Antonio became its director-general in 1996. A year later, he became the general director of Grupo Financiero Inbursa, which was founded by his father in 1957 to provide banking and related services in Mexico through its subsidiaries.^[2]

In 1998, he became the chairman of the board of Grupo Financiero Inbursa. During an interview with theworldfolio.com in 2011, he mentioned how Grupo Inbursa had "doubled the size of our bank portfolio, tripled the number of branches and financed more than 30,000 SMEs" despite the 1995 crisis. Marco Antonio, who has been taking care of his responsibilities of managing the financial arm of the Slim empire consistently and efficiently, went on to become the president of the Carlos Slim Health Institute in 2007 and the president of the board of IDEAL in 2012. According to Grupo Carso’s 2012 report, Marco Antonio and each of his brothers and sisters owns more than 10% shares of the company directly or indirectly. Marco Antonio also has shares in companies like América Móvil, AMEA MOVI and BlackRock.^[3]

Marco Antonio Slim Domit, also known by the nickname Tony, was born on April 30, 1968, in Mexico City, Mexico, to Carlos Slim Helú and Soumaya Domit Gemayel. His father is a business magnet who holds shares in numerous Mexican companies and serves as the Chief Executive Officer of Telmex, América Móvil and Grupo Carso. His mother who was a philanthropist suffered from kidney problems and died in 1999. He has two brothers named, Carlos and Patrick, and three sisters named, Vanessa, Soumaya and Johanna. He studied at Instituto Irlandés, a highly selective private school, in Greater Mexico City, where he was the class of 1986. He later went to Universidad Anáhuac like his elder brother Carlos and earned a Bachelor of Business administration degree with specialization in Finance.^[4]

Marco was in news in 2017 when it was revealed in a May 2003 deed carrying his signature that he and his relatives had inherited 43.295 acres of land outside Houston, Texas. The land originally belonged to his grandmother Lily Gemayel Domit who then sold it to Westhill Ltd., a Cayman Islands company.