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

ON October 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 by the three cofounders of AI startup Mercor. That trio of 22-year-olds became the youngest self-made billionaires ever, gaining 10-figure status even earlier than Mark Zuckerberg did 17 years ago at age 23. “It’s definitely crazy,” Mercor’s Foody told Forbes in October. “It feels very surreal. Obviously beyond our wildest imaginations, insofar as anything that we could have anticipated two years ago.”

Then, in a remarkable stretch from November until December, another seven entrepreneurs under the age of 30 became billionaires, including Kalshi cofounder and former ballerina from Brazil

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