The CME has had its headquarters in the building since 1983, and its current lease was set to expire in November 2008, according to a released statement from the CME and Tishman Speyer. Holly Duran and Rich Schulz, both with Holly Duran Real Estate Partners LLC, was CME Group's real estate adviser. Jim Rosenbloom and Gary Ruben, both with the law firm Goldberg Kohn, represented CME Group. A lease rate was not disclosed. The asking rent for class A buildings in the West Loop submarket is $37 per sf, according to Grubb & Ellis' second quarter market report.

The CME Trust also sold the trading floors to Tishman Speyer. The two floors that each measure reportedly about 35,000 sf were sold for a reported $16 million. The CME Group will continue to occupy the trading floors until it unifies its trading floors at 141 W. Jackson in the second-quarter of 2008, according to the released statement. The lower floor will be renovated into office space for CME group. Fujikawa Johnson Gobel Architects will be the architect and was the original architect for the CME Center in the early 1980's. OWP/P will provide space planning and interior architectural services.