"With just a few leasing opportunities remaining, 123 N. Wacker has solidified its position as one of the real success stories of the Downtown Chicago market," says Prentiss Properties vice president Michael Schack, whose company paid $87.2 million for the building in 1999, when Aon Corp. occupied the entire building. Two years later, the tenant moved to 200 E. Randolph St., which was renamed Aon Center. By 2001, however, Prentiss Properties had filled 90% of the building, signing deals with such tenants as Morton Salt, Wells Fargo, Houlihan Lokey Howard & Zukin as well as Meckler, Bulger and Tilson.

Most recently, Los Angeles-based Houlihan Lokey Howard & Zukin has expanded its lease to 33,000 sf while Meckler, Bulger and Tilson has grown to 60,000 sf. Xerox Corp. is relocating its sales office from 125 S. Wacker Dr. Steve Steinmeyer of Jones Lang LaSalle represented Xerox Corp. in negotiations with Brian Whiting of J.F. McKinney & Associates, whose company has taken over leasing for the REIT. However, the remaining inventory includes 13,000 sf of office space in blocks ranging from 2,050 sf to 3,345 sf as well as another 1,642 sf of ground-floor retail space.