Pershing Square's Bill Ackman revealed Friday that he has built a significant stake in Uber, saying the stock is still ...

Pershing Square Capital Management Chief Executive Officer Bill Ackman said he took down a critical post about UnitedHealth Group Inc. after the company’s lawyers told him the claims about the company ...

Former bond king Bill Gross says that the hot energy pipeline stocks “‘seem to be topping” after a big run and that he has ...

Bill Ackman announced on Saturday that his management company would leave Delaware to reincorporate in Nevada.