Iris Fontbona Net Worth

Iris Fontbona has an estimated net worth of $43.4 billion, according to Forbes Real-Time Billionaires, Iris Fontbona profile (figures as of October 20, 2026). That is up from $15.4 billion in 2019.

Iris Fontbona is a Chilean business owner whose fortune is tied mainly to mining. She is the widow of Andrónico Luksic, and she inherited Antofagasta PLC after his death in 2005. Fontbona and her children control Antofagasta, which owns copper mines in Chile and trades on the London Stock Exchange. The family also holds a majority stake in Quiñenco, a publicly traded Chilean conglomerate with interests in banking, beer, and manufacturing.

Her wealth grew from the family companies she and her children oversee. Antofagasta is the best-known part of that empire because of its copper mines in Chile. Through Quiñenco, the family also has exposure to Banco de Chile, CCU, Madeco, and CSAV. One early move after taking charge was the purchase of a 70% stake in Canal 13. Forbes put her fortune at $43.4 billion on its real-time billionaires tracker as of October 20, 2026.

How Iris Fontbona makes money

Most of Fontbona's wealth comes from the family stake in Antofagasta and from their holding in Quiñenco. Antofagasta owns copper mines in Chile and is listed in London, making mining the core of her fortune. Quiñenco adds another layer through a broad set of businesses. It is active in banking, beer, and manufacturing, which gives the family exposure well beyond metals. That mix helps explain why her wealth is linked to both mining and a larger corporate group.

Control of the businesses sits with Fontbona and her children. Jean-Paul Luksic serves as chairman of Antofagasta. Andrónico Luksic led Quiñenco from 2013 until stepping down in December 2023. Public company stakes are central to the family's position because both Antofagasta and Quiñenco trade in public markets. Wikipedia also notes a 70% purchase of Canal 13 after her husband died, showing that the family interests have included media as well as mining and industry.

Forbes net worth timeline

Forbes has shown big swings in Fontbona's fortune over time. On the World's Billionaires list, it estimated $15.4 billion in 2019, then $10.8 billion in 2020. The next year, that figure jumped to $23.3 billion. In 2022, Forbes put her at $22.8 billion, followed by $23.1 billion in 2023. Those changes tracked the value of major family holdings connected to mining and to the publicly traded companies they control.

The estimates moved higher again after that. Forbes listed her at $25.7 billion in 2024 and $28.1 billion in 2025. On the 2026 World's Billionaires list, Forbes raised the figure to $52.6 billion. Later, its real-time tracker showed $43.4 billion in October 2026. Because her fortune is built around large stakes in public companies such as Antofagasta and Quiñenco, market moves can shift the estimate by many billions from one reading to another.