Investment Bank Doubles Midtown Footprint in Extension Deal

Chicago-based investment bank William Blair will remain in its existing 40,240-square-foot space spanning the entire 20th floor at 1166 Avenue of the Americas, adding the entire 19th floor’s 40,240 square feet as part of the extending deal, bringing its total footprint within the tower of 80,480 square feet. A second signing adds insurance firm Ryan Specialty Group to the building’s roster, the company planning to relocate to 40,240 square feet on the 18th floor from 1345 Avenue of the Americas.