The 10 richest billionaires under 40 in the world, according to Bloomberg
According to Bloomberg figures published on October 20, 2026, Austria's Mark Mateschitz, 34, tops the ranking of billionaires under 40 with US$29.9 billion, stemming from the 49% stake he inherited from his father, Red Bull's co-founder. He is followed by Greg Brockman, OpenAI co-founder and president, with US$25.5 billion, and Czech Michal Strnad with US$18.9 billion. The list combines inherited fortunes with wealth generated by technology, digital payments and artificial intelligence.
In 35 seconds
- Mark Mateschitz, 34, leads the list with US$29.9 billion from his 49% stake in Red Bull
- OpenAI's Greg Brockman is second with US$25.5 billion; Anthropic's Daniela Amodei closes the top 10 with US$7.98 billion
- Stripe founders Patrick and John Collison rank fourth and fifth with US$16.3 billion each
IASummary generated by artificial intelligence from a story by Revista Mercado. It may contain errors: the original source prevails.




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