Top 10 self-made billionaires in the world under 40
No 5 Travis Kalanick
Wealth: $6.15 billion
Company: Uber
Age: 40
Age when made $1 billion: 38
Time it took to make $1 billion: 6 years
Country of residence: US
Uber CEO Travis Kalanick attends the summer World Economic Forum in Tianjin, China, on June 26, 2016. [Photo/Agencies] |