Amazon CEO Jeff Bezos now worth $100 bn.

Amazon CEO Jeff Bezos now worth $100 bn.

Amazon CEO Jeff Bezos is now worth $100 billion, which makeshim the world's richest man.

Bloomberg reported that he is the first to reach the $100 billion milestone since Bill Gates did in 1999.

Bezos officially earned the title in October when he surpassed Gates, a feat he also briefly accomplished in July.

The top spot was held by Gates since May 2013, before July.

Gates held the top spot since May 2013.

At the start 2017, Bezos was the fourth richest person in the world and surpassed both Inditex founder Amancio Ortega and Berkshire Hathaway's Warren Buffet this year as well. Bezos' increase in net worth this year is partly due to an exceptionally profitable year for Amazon, which saw the acquisition of Whole Foods.