Amazon continues to grow as a company, and so does the net worth of the company’s CEO, Jeff Bezos.

Amazon’s shares closed at  $1,006.73 per share on Friday, the first time it would cross the 4-digit mark in the company’s 22-year history.

It’s now the fourth largest company in the world by its market value, which stands at $486 billion. Only Microsoft ($560 billion), Google/Alphabet ($688 billion), and Apple ($822 billion) have a higher market value.

The company has seen a tremendous amount of growth in the past 2 years, with share price having grown 40% in just 2017 alone.

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Bezos is however not considering a stock split to make shares cheaper.

“That’s something we consider from time to time,” Bezos said at Amazon’s annual meeting. “We don’t have any plans to do that at this point, but we will keep looking at it.”

53-year old Bezos owns 17% of Amazon, and if the company continues growing, so will his own value. He’s currently worth $86 billion, $20 billion of that which came in the past year.

He’s only $4 billion behind world’s richest man Bill Gates, with the Microsoft co-founder worth $90 billion.