Born On Your Day

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Leon Black

Entrepreneur · Apollo Global Management · born July 31, 1951

$13.8Bolder estimate, as of 2025 · Forbes

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About

Leon David Black is an American private equity investor. He is the former CEO of Apollo Global Management, which he co-founded in 1990 with Marc Rowan and Josh Harris. Black was the chairman of the Museum of Modern Art from 2018 to 2021.

Adapted from Wikipedia (CC BY-SA 4.0).

Milestones, by age

Dated facts from Wikidata; ages marked “about” come from year-only dates.

  1. ~39Founded Apollo Global Management1990
  2. ~39Became CEO of Apollo Global Management1990

Reported wealth

Each figure is a dated estimate from the publisher shown; wealth changes, and nothing here is live.

As ofEstimateSource
2025$13.8BForbes · current

Sources

Every fact on this page traces to one of these.

Sources (3)

Also born on July 31

Leon's most notable birthday twins

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Tom Gores

Entrepreneur

1964 · United States

$10.1Bolder estimate, as of 2025 · Forbes

Tom Gores is an American-Israeli billionaire businessman. He is the founder of Platinum Equity, a private equity firm headquartered in Beverly Hills, California. In June 2011, Gores and Platinum Equity became the owners of the National Basketball Association's Detroit Pistons.

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Sources (3)
Mark Cuban
entrepreneur

Mark Cuban

Entrepreneur

1958 · United States

Mark Cuban is an American businessman, entrepreneur, and television personality. He is the former principal owner and current minority owner of the Dallas Mavericks of the National Basketball Association (NBA) and co-owner of 2929 Entertainment.

Gage Skidmore, CC BY-SA 3.0, via Wikimedia Commons

Sources (2)
Milton Friedman
scientist

Milton Friedman

Author

1912–2006 · United States

Milton Friedman was an American economist and statistician who received the 1976 Nobel Memorial Prize in Economic Sciences for his research on consumption analysis, monetary history and theory and the complexity of stabilization policy.

Bachrach Studios, Public domain, via Wikimedia Commons

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Sources (2)
scientist

Paul D. Boyer

Scientist

1918–2018 · United States

Paul Delos Boyer was an American biochemist, analytical chemist, and a professor of chemistry at University of California, Los Angeles (UCLA).

Sources (2)