World's Wealthiest People Became Richer by $1 Trillion in 2017 The data, which comes from the Bloomberg Billionaires Index, shows that the 500 richest people in the world quadrupled their wealth. Amazon founder Jeffrey P. Bezos gained $34.2 billion in wealth. Microsoft co-founder Bill Gates came in second place with a net worth of $91.3 billion. Saudi Arabia's richest person Alwaleed bin Talal lost the largest sum at $1.9 billion.
