6. John Collison
Age: 28
Net Worth: $2.1 Billion
Two years younger than his older brother, Patrick Collison, the tenth youngest billionaire in the world, John Collison is the co-founder and president of Stripe.
After coming up with the idea for stripe whilst attending college at MIT in Boston, the company has since gone on to be valued at $20.25 billion, after a 2018 funding round of $245 million.
John Collision, 28, was born and raised in the countryside of Ireland close to Limerick, along with his older brother and co-founder of Stripe, Patrick Collison.
Today, John is worth $2.1 billion at 28 years old.
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