In 2017 the Oxfam report concluded that the top eight wealthiest people on the planet have as much combined capital as the poorest half of the world’s population. Great wealth has come to these men–for there are no women on the list this year–through advances in technology, retailing, internet sales, and a diverse portfolio of investments. The most recent Forbes listing of the world’s wealthiest people included 2,208 billionaires, a record, with the total wealth estimated at $9.1 trillion.

1. Jeff Bezos

Not only is the 54-year old Jeff Preston Bezos the wealthiest person on earth, but he is also the wealthiest person in modern history by Forbes magazine. Bezos net worth is more than $112 billion. Bezos created a modest company in 1994 called Amazon to sell books on-line that has grown into the world’s largest online retailer. Not only is Amazon the world’s largest internet sales company, but it also is the largest provider of cloud infrastructure services on the planet.

Jeff Bezos wealthiest peopleDavid McNew / Getty Images