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The 110-story Chicago giant will be renamed Willis Tower under a leasing deal announced Thursday. The New York-based owners signed a lease with Willis Group Holdings Ltd., an insurance broker, for 140,000 square feet plus the naming rights
Real estate experts wondered why the owners handed naming rights to a tenant that will take only 3.5 percent of the 3.8 million-square-foot building. In 2005, naming rights were on the table in lease talks with computer seller CDW Corp., which was a potentially bigger tenant. CDW wound up at 120 S. Riverside.
For its own naming deal, Aon occupies about 25 percent of its namesake tower. Like Willis, it has no ownership share in the structure