Masaaki Arai vs Mark Zuckerberg
Real-time net worth, career, and company comparison — updated June 2026.
Wealth at a Glance
Net worth gap: $205.3B — equivalent to 99% of Mark's total wealth.
Tale of the Tape
Career Highlights
Masaaki Arai
- 1987Joined Unihouse IncorporatedBegan his career in the real estate industry.
- 1997Founded Open House GroupEstablished his own real estate development company, serving as President and CEO.
- 2013Open House Group Went PublicThe company was listed on the stock exchange.
- 2024Revenue of $8.6 billionOpen House Group reached $8.6 billion in annual revenue.
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 | Masaaki | Mark | Leader |
|---|---|---|---|
| 2022 | — | $65B | — |
| 2023 | — | $170B | — |
| 2024 | $3.1B | $224.1B | Mark |
| 2025 | $3.1B | $222B | Mark |
| 2026 | $2.417B | $207.68B | Mark |
The Verdict: Mark Zuckerberg vs Masaaki Arai
As of June 2026, Mark Zuckerberg leads this comparison with a net worth of $207.68B, placing at #6 in the global rankings. Masaaki Arai follows at $2.417B — a gap of $205.3B.
The two leaders come from distinct industries — Diversified for Masaaki Arai and Technology for Mark Zuckerberg. Comparing them is therefore a comparison of different underlying asset types, growth rates, and risk profiles rather than a simple head-to-head within the same market.
Masaaki Arai is 60 years old versus 41 for Mark Zuckerberg, a difference of 19 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