Billionaire Profile
Daniel Ziff
Global Rank
#528

Image: Public domain | via Wikimedia Commons

Daniel Ziff

CEO, Ziff Brothers Investments
US
Real-Time Net Worth
$7.2B
As of December 2025
Age
54
Source
Investments
Industry
finance-investments
Citizenship
US

Biography

Daniel Ziff is a prominent American investor and philanthropist. As the son of publishing magnate William Bernard Ziff Jr., Daniel, along with his brothers Dirk and Robert, inherited a substantial fortune from the Ziff-Davis publishing empire. Daniel's career is marked by astute investment strategies and a focus on long-term value creation. He and his brothers formed Ziff Brothers Investments, a family office that has invested across various asset classes. Known for his private nature and commitment to philanthropy, Daniel Ziff has made significant contributions to education, healthcare, and the arts, while maintaining a low public profile. His current estimated net worth is $7.2 billion.

Wealth Over Time

In-Depth Profile

Early Life

Daniel Morton Ziff was born in 1973. He is the youngest son of William Bernard Ziff Jr., a Jewish American media magnate who built the Ziff-Davis magazine empire. His grandfather, William Bernard Ziff Sr., co-founded the publishing company Ziff Davis in 1927. Daniel graduated from the Trinity School in New York City and later earned a Bachelor of Arts from Columbia University in 1996.

Rise to Success

In 1994, Daniel and his brothers Dirk and Robert inherited the family fortune after their father sold 95% of the Ziff-Davis publishing business for $1.4 billion. Instead of continuing in the media business, they formed Ziff Brothers Investments, a private investment firm in New York City. Under Daniel's leadership, Ziff Brothers Investments adopted a diversified approach, encompassing equities, real estate, hedge funds, and private equity. The firm became known for its disciplined and data-driven investment strategies, earning a reputation as one of the most successful family offices.

Key Business Strategies

Ziff Brothers Investments invested across a range of asset classes, including equities, debt, real estate, commodities, private equity, and hedge funds. A notable investment was providing seed money to fund manager Daniel Och for a 10% stake in Och-Ziff Capital Management, which later went public. Daniel Ziff and his brothers are noted for their commitment to a consensus-driven approach to investment decisions, although this has evolved over time. Ziff Brothers Investments ceased operations in 2014, and the brothers now invest independently.

Philanthropy

Daniel Ziff and his family have supported numerous causes, including education, healthcare, and the arts. In 2018, Dirk and Daniel Ziff donated $2 million to the Center for Climate and Life, a research initiative at Columbia's Lamont–Doherty Earth Observatory. Daniel is involved in The Daniel M Ziff Foundation, a private foundation that primarily funds general support.

Career Milestones

1994

Inherited Family Fortune

Inherited the family fortune after the sale of Ziff Davis publishing company.

1994

Founded Ziff Brothers Investments

Co-founded Ziff Brothers Investments with his brothers, focusing on diversified investments.

2014

Ziff Brothers Investments Ceased Operations

Ziff Brothers Investments closed, and the brothers began investing independently.

Philanthropy & Social Impact

Education and Research

Center for Climate and Life

$2M

Donation to a research initiative at Columbia University's Lamont–Doherty Earth Observatory

General Support

The Daniel M Ziff Foundation

Unknown

Funds general support for various causes.