Bloomberg tracks the fortunes of some 2,800 billionaires. Of those, 145 are worth at least $10 billion, making them decabillionaires. Now, the world contains two centibillionaires simultaneously.

Microsoft co-founder Bill Gates, once the world’s richest person, has again eclipsed the $100 billion threshold, joining Amazon.com’s Jeff Bezos in the exclusive club, according to the Bloomberg Billionaires Index.

Gates’s fortune, now $100 billion on the nose, hasn’t reached such heights since the dot-com boom, when Bezos was only beginning his march up the world’s wealth rankings. The Amazon founder is now worth $145.6 billion, having added $20.7 billion this year alone, while Gates has gained $9.5 billion.

These two fortunes underscore a widening wealth gap in the U.S., where those with the most capital are accumulating riches the fastest. It’s also a worldwide trend. France’s Bernard Arnault has an $86.2 billion fortune, equal to about 3 percent of his country’s economy. The net worth of Spain’s Amancio Ortega represents 5 percent of that nation’s gross domestic product. And then there’s Bidzina Ivanishvili, who’s worth about a third of Georgia’s GDP.

The Gates and Bezos mega-fortunes may not last long. Gates has donated more than $35 billion to the Bill & Melinda Gates Foundation and said he intends to give away at least half of his wealth. Bezos, meanwhile, may be about to cede some of his fortune for a different reason: he and his wife Mackenzie are divorcing.

The Bloomberg Billionaires Index ranks the world’s 500 wealthiest people. The combined net worth of the group has surged $505.8 billion this year to $5.3 trillion.


Only subscribers are eligible to post comments. Please subscribe or to participate in the conversation. Here’s why.

Use the form below to reset your password. When you've submitted your account email, we will send an email with a reset code.