Why There Are Suddenly So Many Self-Made Billionaires Under 30

ONOctober 7, Intercontinental Exchange (the parent company of the New York Stock Exchange) invested $2 billion into Polymarket, pushing up the prediction market platform’s valuation to $9 billion. That made Polymarket’s 27-year-old founder, Shayne Coplan, the world’s youngest self-made billionaire. His reign was short: 20 days later, he was overtaken…