Elon Reeve Musk is a South African-born Canadian American business magnate, investor, engineer, and inventor. He is the founder, CEO, and lead designer of SpaceX; co-founder, CEO, and product architect of Tesla, Inc.; and chairman of SolarCity. In December 2016, he was ranked 21st on the Forbes list of The World's Most Powerful People. As of February 2018, he has a net worth of $20.8 billion and is listed by Forbes as the 53rd richest person in the world.