Net worth: $40 billion

Age: 67

Country: France

Industry: Luxury goods

Source of wealth: Inheritance/self-made; LVMH

Bernard Arnault's LVMH houses 70 luxury brands from Louis Vuitton to Hennessy to Dom Perignon, all controlled by family parent company Groupe Arnault. By the 1980s and '90s, Arnault, who started out as a civil engineer, had assumed control of the family business and proceeded to buy high-end fashion house Christian Dior, reviving it from the brink of bankruptcy. Like most LVMH brands today, Dior once again thrives as an industry standard bearer, helping the firm haul in a record EUR 37.6 billion ($39.5 billion) in revenue in 2016.

Arnault's wealth has increased by $6.8 billion in the past year.