Elon Reeve Musk is a technology entrepreneur and engineer. He holds South African, Canadian, and U.S. citizenship and is the founder, CEO, and lead designer of SpaceX; co-founder, CEO, and product architect of Tesla, Inc.;, co-founder and CEO of Neuralink; founder of The Boring Company; co-founder and co-chairman of OpenAI; and co-founder of PayPal. In December 2016, he was ranked 21st on the Forbes list of The World's Most Powerful People. As of October 2018, he has a net worth of $22.8 billion and is listed by Forbes as the 54th-richest person in the world.