Elon Musk cofounded six companies, including electric car maker Tesla, rocket producer SpaceX, and tunneling startup Boring Company.

1 Elon Musk - $244.2 B

Bernard Arnault oversees the LVMH empire of 75 fashion and cosmetics brands, including Louis Vuitton and Sephora.

2 Bernard Arnault & family - $208.8 B

Jeff Bezos founded e-commerce giant Amazon in 1994 out of his Seattle garage.

3 Jeff Bezos - $155.9 B

arry Ellison is chairman, chief technology officer, and co-founder of software giant Oracle, of which he owns about 35%.

4 Larry Ellison - $144.9 B

Known as the "Oracle of Omaha," Warren Buffett is one of the most successful investors of all time.

5 Warren Buffett - $118.9 B

Bill Gates turned his fortune from software firm Microsoft into diversified holdings including investments in zero-carbon energy.

6 Bill Gates - $113.0 B

Larry Page stepped down as CEO of Alphabet, the parent company of Google, in 2019 but remains a board member and a controlling shareholder.

7 Larry Page - $109.9 B