Mark Zuckerberg Loses $6.49B in a Day as META Slides 2.79%
Mark Zuckerberg's net worth fell by $6.49B (2.47%) on July 18, 2026, putting the Meta Platforms fortune at an estimated $256.10B — #5 in the world.
Published · Updated as figures moved · By RealTimeBillionaire Data Desk
Mark Zuckerberg lost $6.49B of net worth on July 18, 2026, one of the day's biggest moves among the world's richest people. The swing (-$6.49B, or 2.47%) leaves the fortune at an estimated $256.10B, ranked #5 on our real-time list.
The move traces to META, the listed company behind most of the fortune, which fell 2.79% on the day to 646.01 USD per share. Because a billionaire's wealth is concentrated in stock, daily net worth simply follows the share price multiplied by the shares held.
The loss leaves Mark Zuckerberg $1.64B behind Larry Page ($257.74B) one spot up, with Sergey Brin closing in from below at $247.34B.
Co-founder, chairman, and CEO of Meta Platforms (Facebook, Instagram, WhatsApp).
Figures are our real-time estimates, derived from public stock holdings plus a static estimate for private assets — directional, not audited, and they will move again with the next trading session.