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Ziff
Dirk Ziff
Rank #537
UNITED STATES•finance-investments•Investments

Dirk Ziff

Net Worth
$7.189B
0% (24h)
Dirk Ziff is an American billionaire investor and media heir. Born in 1965, he is the eldest son of William Bernard Ziff Jr., who sold the Ziff-Davis publishing empire for $1.4 billion in 1994. Ziff, along with his brothers, formed Ziff Brothers Investments, which invested across various asset classes, including hedge funds, private equity, and real estate. His source of wealth is investments. He has a Bachelor of Arts from Columbia University and an MBA from Harvard University. Ziff is also involved in philanthropy, including the Robin Hood Foundation, and he owns the World Surf League through his investment vehicle ZoSea. As of March 2026, his estimated net worth is $7.2 billion.

How to read Dirk Ziff's profile

Public net-worth figures are estimates. They combine observable inputs—typically listed equity, disclosed transactions, and market prices—with editorial judgment where filings are incomplete (for example, private holdings, debt, or cross-holdings). For Dirk Ziff, we anchor the narrative to Ziff Capital Partners and Investments, then update the headline number as markets move. The chart on this page is meant to show trajectory, not a certified balance sheet.

When you see $7.189B alongside global rank #537, interpret it as our best synthesis of widely cited ownership and price signals—not a claim about cash on hand. Estimates can diverge from other publishers because of different treatment of options, trusts, charitable vehicles, or illiquid assets. We document the general approach in methodology and welcome corrections via corrections.

Country (UNITED STATES) and career milestones on this page are curated for reader context; they should be verified against primary sources when used for research. Editorial metadata for this profile is refreshed on a rolling basis, with deeper audits at least annually (last noted cycle: 2026).

Looking for depth? When available, the dossier and timeline sections below add long-form context beyond the headline number—prioritize those modules when evaluating claims about strategy, controversies, or philanthropic commitments.

The Full Dossier

Early Life and Education

Dirk Edward Ziff was born in 1965. His father, William Bernard Ziff Jr., built the Ziff-Davis magazine empire, which included publications like PC Magazine and Car and Driver. Dirk graduated from the Trinity School in New York City and later earned a Bachelor of Arts from Columbia University in 1988 and an MBA from Harvard University.

Rise to Success

In 1994, Dirk and his brothers inherited the family fortune after their father sold the Ziff-Davis publishing company. They subsequently founded Ziff Brothers Investments to manage and grow their wealth. The firm invested in a diverse range of assets, including hedge funds, private equity, and real estate. They also provided seed money to fund manager Daniel Och, which led to a 10% stake in Och-Ziff Capital Management, which later went public.

Key Business Strategies

Ziff Brothers Investments initially operated hedge funds but ceased operations in 2014. Dirk then formed his own family office, Ziff Capital Partners, in 2015, focusing on private investments. He has demonstrated a strategic approach to wealth management, diversifying investments across various sectors and asset classes.

Philanthropy

Dirk Ziff has been involved in several philanthropic initiatives, including serving as a founding board member of the Robin Hood Foundation. He also supports environmental causes through the Natasha & Dirk Ziff Foundation, contributing to ocean conservation and climate-related initiatives.

Career Timeline

2015

Founded Ziff Capital Partners

Dirk Ziff established his own family office to manage his personal investments.

2013

Acquired World Surf League

Through ZoSea, an investment vehicle, Ziff acquired the Association of Surfing Professionals (now World Surf League).

2006

Founding Board Member of the Robin Hood Foundation

Ziff became a founding board member of the Robin Hood Foundation, an organization focused on fighting poverty in New York City.

1994

Inherited Family Fortune and Founded Ziff Brothers Investments

After his father sold Ziff-Davis, Dirk and his brothers founded Ziff Brothers Investments to manage their inheritance.

Philanthropic Impact

Philanthropy$1.6M

The Natasha & Dirk Ziff Foundation

Supports initiatives in education, philanthropy, and human services.

Environment$5M

Environmental Conservation

Supports ocean conservation efforts aligned with U.N. goals.

Key Business Ventures & Holdings

CompanyStakeValue
World Surf League——

Net Worth History

In-Depth Analysis

Early Life and Education

Dirk Edward Ziff was born in 1965. His father, William Bernard Ziff Jr., built the Ziff-Davis magazine empire, which included publications like PC Magazine and Car and Driver. Dirk graduated from the Trinity School in New York City and later earned a Bachelor of Arts from Columbia University in 1988 and an MBA from Harvard University.

Rise to Success

In 1994, Dirk and his brothers inherited the family fortune after their father sold the Ziff-Davis publishing company. They subsequently founded Ziff Brothers Investments to manage and grow their wealth. The firm invested in a diverse range of assets, including hedge funds, private equity, and real estate. They also provided seed money to fund manager Daniel Och, which led to a 10% stake in Och-Ziff Capital Management, which later went public.

Key Business Strategies

Ziff Brothers Investments initially operated hedge funds but ceased operations in 2014. Dirk then formed his own family office, Ziff Capital Partners, in 2015, focusing on private investments. He has demonstrated a strategic approach to wealth management, diversifying investments across various sectors and asset classes.

Philanthropy

Dirk Ziff has been involved in several philanthropic initiatives, including serving as a founding board member of the Robin Hood Foundation. He also supports environmental causes through the Natasha & Dirk Ziff Foundation, contributing to ocean conservation and climate-related initiatives.

Data Sources & Methodology

Figures for Dirk Ziff are synthesized from the sources below and cross-checked against our net worth methodology. Estimates may lag market moves; see corrections to report discrepancies.

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