Ernest Garcia, II.

Ernest Garcia is the biggest shareholder of Carvana, an online platform for selling used cars and making auto loans that conducted an IPO in 2017.Garcia also owns and runs DriveTime Automotive, the nation's fourth-biggest used car retailer.Carvana was founded by Garcia's son, Ernest Garcia, III, as a subsidiary of DriveTime Automotive and was later spun out. Carvana's stock has soared since its IPO.