About Colliers International Group Colliers International Group Inc. is a top tier global real estate services and investment management company operating in 69 countries with a workforce of more than 13,000 professionals. Colliers is the fastest-growing publicly listed global real estate services and investment management company, with 2017 corporate revenues of $2.3 billion ($2.7 billion including affiliates). With an enterprising culture and significant employee ownership and control, Colliers professionals provide a full range of services to real estate occupiers, owners and investors worldwide, and through its investment management services platform, has more than $20 billion of assets under management from the world's most respected institutional real estate investors.