World's Billionaires: Elon Musk Tops the List — September 4, 2026

Elon Musk closed out September 4, 2026 atop the World's Billionaires list, an estimated $404.69B, built primarily on Tesla, SpaceX. Right behind: Michael Dell and Jeff Bezos follow in the next spots, at $381.47B and $278.19B respectively. Combined, the 51 people we track here are worth $3.85T, up $62.52B from the prior session.

Michael Dell posted the day's biggest gain, adding $16.93B (4.65%) to reach $381.47B (#2). The move traces to Dell Technologies (DELL), which climbed 4.91% on the day — most of a billionaire's daily swing simply follows their main stock's share price.

On the other side, Bernard Arnault took the day's steepest loss, down $1.62B (1.28%) to $125.31B (#10). The move traces to LVMH (MC.PA), which fell 1.81% on the day — most of a billionaire's daily swing simply follows their main stock's share price.

Among the 7 Indian billionaires we track, Mukesh Ambani stays on top at $81.18B. Mukesh Ambani was the day's biggest move in that group, down $197.82M (0.24%) to $81.18B.

Among the 11 women we track, Alice Walton stays on top at $104.21B. Alice Walton was the day's biggest move in that group, up $1.17B (1.13%) to $104.21B.

Among the 8 billionaires under 45 we track, Mark Zuckerberg stays on top at $243.74B. Mark Zuckerberg was the day's biggest move in that group, up $6.24B (2.63%) to $243.74B.

Prince Alwaleed bin Talal made the biggest rank jump, climbing from #33 to #32, with Miriam Adelson also moving up. Miriam Adelson slipped the furthest, from #32 to #33, alongside Prince Alwaleed bin Talal.