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Billionaire Index

A daily ranking of the world's richest people

Last updated: November 11, 2026 · $11.70T tracked

Methodology

No. 250United States

Marijke Mars

Candy, pet food · Los Angeles, California

Net worth

$12.6B

Today

$00.00%

Past month

$00.00%

As of Nov 11, 2026, 1:50 PM EST

Marijke Mars and her three sisters are heirs to the family's giant candy and pet food company, Mars, Incorporated. All four sisters inherited estimated stakes in the company of 8% apiece when their father, Forrest Mars Jr., died in 2016. Her great-grandfather Frank Mars founded the candy company in 1911. Mars serves on the company's board of directors. Mars acquired snack company Kellavova in December 2025 for $35.9 billion including debt.

Net worth over time

0.00%+$0 over the past month
$13B$13B$13B
Oct 12Nov 10

Principal holdings

1 positions
CompanyShareValue

Private holdings

100.0%$12.6B