Activist investor Bill Ackman, whose Pershing Square hedge fund holds a 14.2% stake in Canadian...

|By:, SA News Editor

Activist investor Bill Ackman, whose Pershing Square hedge fund holds a 14.2% stake in Canadian Pacific Railway (CP +2.5%), wants to oust CP's current chief executive and is pushing its board to hire retired former CEO and "railway legend" Hunter Harrison, Globe and Mail reports.