1 / 6Kylie Jenner: Net Worth: $1 billion. At the age of 21, Kylie Jenner, of the Jenner-Kardashian fame became the youngest self-made billionaire, surpassing Facebook CEO Mark Zuckerberg. Forbes estimated that Jenner's Kylie Cosmetics is worth at least $900 million, and she owns it all. She hits the billion-dollar mark when you add in cash she has already pulled from the profitable business.
2 / 6Alexandra Andresen: Net Worth: $1.4 billion. Age: 22. Andresen inherited 42 percent of the family-owned investment company Ferd. Andresen's father Johan still runs the company and controls 70 percent of the votes via a dual-class share structure. Ferd runs hedge funds, is an active investor on the Nordic stock exchange, and has private equity investments.
3 / 6Katharina Andresen: Net Worth: $1.4 billion. Age: 23. Katharina Andresen, born 1995, is one of the world's youngest billionaires. She inherited 42 percent of the family-owned investment company Ferd. Ferd runs hedge funds, is an active investor on the Nordic stock exchange, and has private equity investments.
4 / 6Gustav Magnar Witzoe: Net Worth: $3 billion. Age: 24. Witzoe owns nearly half of Salmar ASA, one of the world's largest salmon producers. His stake was gifted to him in 2013 by his father, Gustav Witzoe, who founded the company in 1991. Salmar has led the industrialisation of fish farming in Norway. The elder Witzoe is still a director of the company. Gustav has also invested in real estate and tech startups.
5 / 6John Collison: Net Worth: $2.1 billion. Age: 28. John Collison is co-founder and president of Stripe, a company that lets businesses and individuals accept payments over the internet. In September 2018, Stripe announced a $245 million funding round that valued the business at $20.25 billion. The company's first payment was processed while he was on a vacation in South America.
6 / 6Evan Spiegel: Net Worth: $2.3 billion. Age: 28. Snapchat creator Spiegel became one of the youngest public company CEOs at age of 26 when Snap began trading in March 2017. Each day some 191 million people use Snapchat to send disappearing messages; the app faces growing competition from Facebook-owned Instagram. Spiegel co-founded the company with Bobby Murphy, a Stanford University fraternity brother, in 2011. Spiegel and Murphy each own about 18 person of Snap but have voting shares that give them control over the board.
