As Valeant Tumbles, So Does Bill Ackman’s Hedge Fund Herd - The New York Times

As Valeant Tumbles, So Does Bill Ackman’s Hedge Fund Herd - The New York Times:



 "The billionaire investor William A. Ackman has become the unofficial leader of a thundering herd that has lost billions of dollars betting on Valeant Pharmaceuticals over the past year."



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