Key Points Bill Ackman built his reputation through high-conviction bets that produced both massive wins and notable failures ...

Investor Bill Ackman and his wife, Karen, are giving $26 million from the Ackmans's Pershing Square Foundation to Harvard University in support of the Foundations of Human Behavior Initiative, the ...

BOSTON, May 15 (Reuters) - Wall Street's savviest investors are picking sides on Bill Ackman's new bet on Valeant Pharmaceuticals International Inc, with BlueMountain Capital and T. Rowe Price adding ...

Don't send out any save-the-dates for that Allergan special shareholder meeting just yet. Valeant has won a request for an expedited trial over the timing of the meeting, a key step in its $50 billion ...

Hedge fund manager Bill Ackman, who runs Pershing Square Capital Management, has a long career of successful investments. However, what Ackman will likely be best remembered for is his gigantic ...

Hedge fund manager Bill Ackman is one of more controversial figures on Wall Street. The head of the $12 billion Pershing Square Capital Management fund has gained the ire of several peers, including ...