Amazon CEO, Jeff Bezos
Amazon CEO Jeff Bezos

Move over old-world retail billionaires.

Amazon CEO Jeff Bezos is now “richer than three of the four Wal-Mart heirs,” according to Bloomberg.

Bezos’ net worth got a huge bump from Amazon’s first quarter, which beat expectations with revenues of $22.72 billion and sent the company’s stock soaring.

Bloomberg reported that Bezos’ “fortune jumped $4.9 billion to $40 billion, making him the world’s 10th-richest person.”

Wal-Mart’s Christy Walton, Sam’s daughter-in-law, is the only Wal-Mart heir who is on par with Bezos now.

If you haven’t checked out Bloomberg Billionaires Index, you should. It’s a Cliff’s Notes-like romp through the richest people in the world, with little illustrations for their heads. You can see Bezos at No. 10 below:

Image via Bloomberg Billionaires Index
Image via Bloomberg Billionaires Index

[Correction: The size of the increase in Bezos’ fortune was incorrectly stated in an earlier version of this story.]

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