The Meta Platforms co-founder and CEO ranked 5th on the Forbes 2026 World's Billionaires list at $222 billion. His wealth comes almost entirely from his controlling stake in Meta.
Verified figure, based on published reports.
Meta stock, whose value is driven by Facebook and Instagram advertising and the company's massive AI infrastructure bets.
From the Mark Zuckerberg profile on NetWorthEx
Zuckerberg became the world's youngest self-made billionaire at 23 in 2008, and in 2015 he and his wife pledged to give away 99 percent of their Meta shares.
From the Mark Zuckerberg profile on NetWorthEx
Mark Zuckerberg is worth an estimated $255 billion as of October 2026, according to the Forbes Real-Time Billionaires tracker. He ranked 5th on the Forbes 2026 annual list at $222 billion in March, with later estimates reaching $257.5 billion in September 2026.
From the Mark Zuckerberg profile on NetWorthEx
Sources listed in the full profile
Zuckerberg owns a controlling stake in Meta Platforms, roughly 13 percent of the shares, with super-voting Class B stock that gives him majority voting control. He has sold relatively little over the years, keeping the vast majority of his founding stake. Private holdings are never fully disclosed.
From the Mark Zuckerberg profile on NetWorthEx
The complete Mark Zuckerberg dossier: full wealth breakdown, career story, FAQs and sources.
Verified celebrity net worth, updated for 2026.