Bill Ackman Quotes
As a result of overdiversification, their (active managers) returns get watered down. Diversification covers up ignorance. Active managers haven't done enough research into any of their companies. If managers have 200 positions, do you think they know what's going on at any one of those companies at this moment?
Citations
Ahuja, Maneet. The Alpha Masters: Unlocking the Genius of the World's Top Hedge Funds. John Wiley & Sons, 2012, p. 55.
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William Albert Ackman is an American investor and hedge fund manager. He is the founder and CEO of Pershing Square Capital Management, a hedge fund management company. Ackman is an activist investor.