Robert Duggan vs Marijke Mars: who is richer?
Robert Duggan is richer, with a net worth of $12.68 billion versus Marijke Mars' $12.59 billion — a gap of $83.55 million, or 1.01 times as much (as of November 7, 2026).
Robert Duggan
Source of wealth: Pharmaceuticals
$12.68B
Made since you opened this page: $0.00
Marijke Mars
Source of wealth: Candy, pet food
$12.59B
Made since you opened this page: $0.00
Side-by-side
| Robert Duggan | Marijke Mars | |
|---|---|---|
| Net worth | $12.68B | $12.59B |
| World rank | #241 | #244 |
| Makes per second | $13.38 | $37.45 |
| Makes per day | $1.16M | $3.24M |
| Today | +$1.25B | $0 |
| Source of wealth | Pharmaceuticals | Candy, pet food |
| Age | 82 | 62 |
| Country | United States | United States |
Net worth by year
| Year | Robert Duggan | Marijke Mars |
|---|---|---|
| 2026 | $11.6B | $12.3B |
| 2025 | $12B | $10.7B |
| 2024 | $3.9B | $9.6B |
| 2023 | $1.8B | $9.6B |
| 2022 | $2B | $7.9B |
| 2021 | $1.8B | $7.8B |
| 2020 | $1.8B | $6.2B |
| 2019 | $1.8B | $6B |
| 2018 | $2B | $5.9B |
| 2017 | $2.6B | — |
| 2016 | $2.7B | — |
| 2015 | $2.3B | — |
Frequently asked questions
Who is richer, Robert Duggan or Marijke Mars?
Robert Duggan is richer, worth $12.68 billion compared with Marijke Mars' $12.59 billion. The difference is $83.55 million.
Who makes more per second, Robert Duggan or Marijke Mars?
Marijke Mars makes more: about $37.45 per second versus $13.38. Per day that's $3.24M vs $1.16M.
How many times richer is Robert Duggan than Marijke Mars?
Robert Duggan has about 1.01 times Marijke Mars' net worth.