$1.4 billion and retired. William Ziff Jr. had originally wanted to pass the company on to his sons but they were not interested. Instead, they formed the Ziff Brothers Investments family office in New York City, investing their inheritances broadly across equities, debt, real estate, commodities, private equity and hedge funds. They also provided seed money to fund manager Daniel Och in exchange for a 10% stake in Och-Ziff Capital Management, which went public in 2007. Their investments greatly expanded the brothers' fortune. Forbes estimated their net worth to US$4.8 billion each. In 2021, the Ziffs sold their family estate in Manalapan for $94 million. It had initially been listed for $200 million in 2015. It was bought by Jim Clark, who then sold it to Larry Ellison for $173 million in 2022. Philanthropy and political contributions In 1998, Robert Ziff donated $2 million to the Harvard University men's hockey program. In 2008, he established the Robert D. Ziff Professorship of Law at Cornell Law School. He also made headlines in 2011 for his financial contributions to Republican legislators supportive of gay marriage. 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. References American billionaires American people of German descent American people of Jewish descent Ziff family American investors