10 of the US' youngest billionaires in 2026 — and how they got their fortunes

The Forbes 2026 list of America's 400 richest billionaires includes just 10 people under 40. Many owe their fortunes to the booming AI industry.

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2026-09-21 17:20 · Business Insider AI
10 of the US' youngest billionaires in 2026 — and how they got their fortunes

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