World's Billionaires: Elon Musk Tops the List — September 9, 2026

Elon Musk closed out September 9, 2026 atop the World's Billionaires list, an estimated $401.31B, built primarily on Tesla, SpaceX. Right behind: Michael Dell and Jeff Bezos follow in the next spots, at $393.72B and $276.41B respectively. Combined, the 51 people we track here are worth $3.85T, up $4.67B from the prior session.

Michael Dell posted the day's biggest gain, adding $6.82B (1.76%) to reach $393.72B (#2). The move traces to Dell Technologies (DELL), which climbed 1.86% on the day — most of a billionaire's daily swing simply follows their main stock's share price.

On the other side, Jensen Huang took the day's steepest loss, down $3.70B (1.96%) to $185.58B (#8). The move traces to Nvidia (NVDA), which fell 2.01% 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 $80.56B. Mukesh Ambani was the day's biggest move in that group, down $302.00M (0.37%) to $80.56B.

Among the 11 women we track, Alice Walton stays on top at $103.03B. Alice Walton was the day's biggest move in that group, down $545.00M (0.53%) to $103.03B.

Among the 8 billionaires under 45 we track, Mark Zuckerberg stays on top at $244.72B. Mark Zuckerberg was the day's biggest move in that group, down $1.15B (0.47%) to $244.72B.

Radhakishan Damani made the biggest rank jump, climbing from #36 to #35, with Brian Chesky also moving up. Brian Chesky slipped the furthest, from #35 to #36, alongside Radhakishan Damani.