From the 'History' section of hte website:
In January 1992, the Ritz-Carlton Hotel was sold and became affiliated with the European-based Kempinski group of five-star hotels.
Today, the Ritz-Carlton is independently managed and is the only hotel of its time still in existence. “La Grande Dame”, an historic landmark, continues her proud tradition in Montreal of enriching the lives of all those touched by her grace, elegance and old world charm.