Guillermo Romo entered the business world at the age of 17 and has since achieved several business successes, including the sale of Tequila Herradura, his family's original business, to Brown-Forman Corporation - a transaction valued US$ 876 million. In 2003, Romo created Grupo Mega, a holding company that integrates financial services, with assets of US$ 150 million (there was a nominal increase of 11% between 2010 and 2011). Grupa Mega is ranked as the 5th largest independent leasing company in Mexico and has an investment rating by Standard & Poor's and Fitch Ratings. Other investments include Global Strategic Investments, Millesime Compagnie Financiere and the RFO fund. Romo is Chairman of the Board and Chief Executive Officer Grupo Mega and has seats on the boards of Brown-Forman, Mexican Tequila Association, Banamex and Nacional Financiera (Jalisco Chapter). He is active in social responsibility projects such as Teleton and Endeavor.