BOSTON (Reuters) – Hedge fund mogul William Ackman has purchased a $3.3 billion stake in Valeant Pharmaceuticals International , making his firm the company's fifth-largest stakeholder, a source familiar with the matter …
BOSTON (Reuters) – Hedge fund mogul William Ackman has purchased a $3.3 billion stake in Valeant Pharmaceuticals International , making his firm the company's fifth-largest stakeholder, a source familiar with the matter …