William Stone vs Mark Zuckerberg
Real-time net worth, career, and company comparison — updated June 2026.
Wealth at a Glance
Net worth gap: $204.6B — equivalent to 99% of Mark's total wealth.
Tale of the Tape
Career Highlights
William Stone
- 1977Began CareerBegan his career at KPMG, a financial services consultancy and accounting firm.
- 1986Founded SS&C TechnologiesFounded SS&C Technologies.
- 1996SS&C IPOLed SS&C Technologies through its initial public offering (IPO).
- 2005SS&C went privateStone took SS&C private
- 2010Second IPOSS&C went public a second time.
Mark Zuckerberg
- 2004Founded FacebookCo-founded Facebook while at Harvard University.
- 2008Became a BillionaireBecame a billionaire at age 23.
- 2012Facebook IPOTook Facebook public, making it one of the largest IPOs in history.
- 2021Meta RebrandingFacebook rebranded to Meta Platforms, Inc., focusing on the metaverse.
Net Worth History
| Year | William | Mark | Leader |
|---|---|---|---|
| 2022 | — | $65B | — |
| 2023 | — | $170B | — |
| 2024 | $3.4B | $224.1B | Mark |
| 2025 | $3.4B | $222B | Mark |
| 2026 | $3.103B | $207.68B | Mark |
The Verdict: Mark Zuckerberg vs William Stone
As of June 2026, Mark Zuckerberg leads this comparison with a net worth of $207.68B, placing at #6 in the global rankings. William Stone follows at $3.103B — a gap of $204.6B.
Both executives operate in the Technology sector, making this a direct peer comparison. Their wealth trajectories reflect the broader performance of that industry over time, though individual company strategy, equity ownership structure, and capital allocation decisions have driven meaningfully different outcomes.
William Stone is 70 years old versus 41 for Mark Zuckerberg, a difference of 29 years. Age context matters in wealth comparisons: a younger billionaire at the same net worth has had less time to accumulate — and in many cases represents a higher compound annual growth rate on their wealth.
Net worth figures are estimates calculated from public shareholding disclosures, stock price data, and reported asset values. See our full methodology.
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Net worth estimates updated daily from public financial disclosures. Methodology · Report an error