Koen De Leus (born in 1969 in Bonheiden) graduated in Commercial Science from the Saint Aloysius Economics High School (EHSAL). He worked as an analyst for Uitgeversbedrijf Tijd, the publishing company behind De Tijd and L’Echo, from 1998 till 2006. During the last two years he served as Chief Economist. 

From 2006 to July 2012, Koen served as a Market Strategist at Bolero, the online broker of KBC Securities, before moving over to take up the post of Senior Economist at the parent company KBC in August 2012. Since September 2016 he is Chief Economist at BNP Paribas Fortis. He is also a guest lecturer in ‘Behavioral Finance’ on the Investment Management program at EHSAL Management School.

On a regular basis, Koen is invited on radio or television programs on channels such as VRT and Kanaal Z to discuss economic affairs. Furthermore, he is often quoted in the financial and specialised press.

Koen published his first book in 2006 entitled ‘Naar Grijsland’ an in-depth analysis of the social and economic consequences of an ageing population. In 2012 he published Gouden Beursleuzen, a book that dives mostly into the behavior of stock investors. In June 2017, Koen published his 3rd book about the digital revolution and its economic and social impact on our society : “The Winners' Economy: Challenges and opportunities of the digital economy”. His last book about the five main trends for the coming decades named ‘The New World Economy in 5 trends – Investing in times of superinflation, hyperinnovation & climate transition’, was written together with chief strategist of BNP Paribas Fortis, Philippe Gijsels, and was published in December 2023 in French and Dutch and in April in English.