Guy Ertz began his career in 1993 as research analyst at the economics department and business cycles centre of the catholic university of Louvain in Belgium. He joined the asset management of the Banque Générale du Luxembourg in 1999 as senior economist and was subsequently appointed head of investment strategy in 2001 and chief investment officer in 2002. In January 2004, he became in charge of the investment strategy for Fortis Private Banking at group level. Currently, he is Chief investment advisor for Wealth Management at BNP Paribas. He is also member of the international investment policy committee.

Guy finished his Ph.D. in economics at the catholic university of Louvain. He spent one year of his Ph.D. program at the University of Minnesota (United-States) thanks to a Fulbright scholarship. Guy lectures courses/seminars in economics and finance in several programs (Catholic University of Louvain, University of Luxembourg, BNP Paribas internal training programs and portfolio management trainings for clients). He published several research articles as well as press articles.