>>371304
Exactly maybe it's the capital of the Chicago loop we should be digging into. List of businesses in the Chicago loop are:
AON Corporation
Blue Cross Blue Shield Association
Clayco
CME Group
CNA Financial Corporation
USA Corp
Exelon Corporation
GATX Corporation
General Growth Properties
GrubHub
Hyatt Hotels Corporation
Integrys Energy Group
JBT Corporation
Jones Lang LaSalle
Kemper Corporation
Leo Burnett Worldwide
LKQ Corporation
MillerCoors
Morningstar, Inc.
Morton Salt, a producer of salt
Navigant Consultant
Northern Trust Corporation
Old Republic International Corporation
PrivateBancorp, Inc.
RR Donnelley
Sidley Austin, a law firm (headquarters)
Strategic Hotels & Resorts
Telephone and Data Systems, Inc.
United Continental Holdings, owner of United Airlines
Ventas, Inc.
And to top it all of http:// www.businessinsider.com/rothschild-opening-new-chicago-office-2016-9
All can be found in the Chicago loop. Fun fact the Chicago river separates the new rothschild and co office and a trump property.