Full Name: Carl Icahn
Profession: Corporate Raider
Why Famous: A billionaire, Icahn made his fortune on Wall Street as one of the most notorious corporate raiders of the 1980s.
Later he became a hedge fund manager well known as an activist shareholder and investor.
A favoured tactic of Icahn's is to "greenmail" companies into making radical changes or restructuring under the threat of a takeover.
Such changes once announced often ensures a large increase in the target company's share price allowing Icahn to sell his stocks in the company at a significant profit. Examples include, Marshall Field and Phillips Petroleum.