CBRE is a commercial real estate services company. They don't actually own any real estate, just provide various services for property owners. One of my favorite shorts.
They provide the HVAC control systems for all Amazon facilities. The SEC made broke them into myriad stock groups making this stock one slice of the pie that is the largest commercial real estate company in the world. This stock only goes up so how have your shorts been working out for you ? I'm long and made a small fortune in my 401k with the stock options they offered me as an employee.