Gildan Activewear is accusing one of its largest shareholders of violating American securities law and has asked the regulator to investigate allegations that the investor has been spreading falsehoods about the Montreal-based clothing maker’s new chief executive, Vince Tyra. In a letter sent to the U.S. Securities and Exchange Commission late Thursday, Gildan alleged that U.S. […]

In 2011, Pershing Square Capital Management, an activist hedge fund founded by William (Bill) Ackman, acquired some 14.2% of Canadian Pacific Railway’s outstanding shares and proceeded to require several changes in the management and governance of the company. The CP board resisted fiercely his entreaties. A memorable proxy fight ensued, which was won by Pershing […]