Robert Duggan vs Mark Zuckerberg
Real-time net worth, career, and company comparison — updated June 2026.
Wealth at a Glance
Net worth gap: $195.1B — equivalent to 94% of Mark's total wealth.
Tale of the Tape
Career Highlights
Robert Duggan
- 1980sFounded Government Technology Services, Inc (GTSI)Sold new computer technologies and services primarily to government agencies.
- 1987Sold Paradise Bakery & CafeSold the business for a significant profit.
- 1997-2003CEO of Computer MotionLed the company specializing in robotic surgical systems.
- 2008-2015CEO of PharmacyclicsOversaw the development of Imbruvica cancer drug and its subsequent sale to AbbVie.
- 2015Pharmacyclics Sale to AbbViePharmacyclics was sold to AbbVie for $21 billion.
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 | Robert | Mark | Leader |
|---|---|---|---|
| 2020 | $2B | — | — |
| 2022 | — | $65B | — |
| 2023 | — | $170B | — |
| 2024 | $11.4B | $224.1B | Mark |
| 2025 | $11.6B | $222B | Mark |
| 2026 | $12.627B | $207.68B | Mark |
The Verdict: Mark Zuckerberg vs Robert Duggan
As of June 2026, Mark Zuckerberg leads this comparison with a net worth of $207.68B, placing at #6 in the global rankings. Robert Duggan follows at $12.627B — a gap of $195.1B.
The two leaders come from distinct industries — Healthcare for Robert Duggan 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.
Robert Duggan is 81 years old versus 41 for Mark Zuckerberg, a difference of 40 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