Largest leases in downtown Chicago.

Citigroup Inc. tops the list of largest leases in downtown Chicago with its move from Sears Tower to a newer West Loop building. In January, the banking giant signed an 18-year lease for 245,000-square-foot space in the AT&T Corporate Center at 227 W. Monroe St.

The largest suburban office lease was for the new corporate headquarters in Long Grove of Fenwal Inc., a blood transfusion business Baxter International Inc. sold to two investment firms in February. Fenwal moved into the 144,526-square-foot space this summer.

Sears Logistics Services Inc. signed the largest industrial lease with its 814,848-square-foot deal in Romeoville.

The lists includes new leases and renewals with expansion completed between July 1, 2006, and June 30, 2007.