Elon Musk

Elon Musk cofounded six companies, including electric car maker Tesla, rocket producer SpaceX and tunneling startup Boring Company.
Elon Musk is working to revolutionize transportation both on Earth, through electric car maker Tesla and in space, via rocket producer SpaceX.
He owns 21% of Tesla but has pledged more than half his stake as collateral for loans; Forbes has discounted his stake to take the loans into account.
Twitter's board agreed to sell the company to Musk for $44 billion on April 25, 2022, after he disclosed a 9.1% stake and threatened a hostile takeover.
SpaceX, Musk's rocket company, is valued at $100 billion after a funding round in December 2021.
He grew up in South Africa, then immigrated to Canada at age 17. He landed in the U.S. as a transfer student to the University of Pennsylvania.

Forbes