(born June 25, 1932) is an American billionaire hedge fund manager, and philanthropist.
Now retired, Robertson invests in other hedge funds, mostly those run by former employees of his own defunct hedge fund company, Tiger Management.
The so-called Tiger cubs manage around 50 of the world's top hedge funds, including Stephen Mandal's Lone Pine, Andreas Halvorsen's Viking, Rob Citrone's Discovery Capital Management, Philippe Laffont of Coatue Management, Lee Ainslie of Maverick Capital and Chase Coleman of Tiger Global Management.
He is a signatory of The Giving Pledge.
Robertson founded Tiger Management, one of the earliest hedge funds.
Robertson is credited with turning $8 million in start-up capital in 1980 into over $22 billion in the late 1990s, though that was followed by a rapid downward spiral of investor withdrawals that ended with the fund closing in 2000.In 1993, his compensation and share of Tiger's gain exceeded $300 million.
His 2003 estimated net worth was over $400 million, and in December 2017 it was estimated by Forbes at $4.1 billion.
Robertson said in 2008 that he shorted subprime securities and made money through credit default swaps.
The following year, according to Forbes, Robertson's return on his $200 million personal trading account was 150 percent.