William Ackman

Activist Investor and Hedge-Fund Manager

William Ackman is founder and CEO of Pershing Square Capital Management. Formed in 2003, the hedge-fund has acquired significant shares in companies such as JC Penney, General Growth Properties, Fortune Bands and Kraft Foods. Ackman advocates strategies of "activist investing," the practice of using stock shares in publicly-traded companies to influence management practices in a way that benefits shareholder interests.


William Ackman's Contributions
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