Brett Icahn

Brett Icahn CNBC Next 25
Benjamin Wachenje

Title: Portfolio manager, Icahn Capital

Born: August 19, 1979, New York City

Education: BA, Princeton University

Early Marker: Doubled value of Icahn Enterprises' Sargon Portfolio since taking over co-management in 2010 with David Schechter.

Big Idea: Given $3 billion by his father to co-manage with David Schechter; seen as a potential test of Brett's suitability to succeed his father or as a springboard for one or both to launch their own asset management firm.

Wave of the Future: Activist investing

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