The move will leave the 38-floor HSBC tower without its anchor tenant and mostly empty.
HSBC has occupied the tower for 40 years and currently fills 653,000 of its 842,000 square feet.
WBEN has collected some opinions and analysis on what the move could mean for downtown Buffalo:
commercial broker, Realty USA
Jim Millitello, Millitello Real Estate
Developer Carl Paladino