Exhibit 21

Subsidiaries of Registrant

As of December 31, 2010

Name	State or Jurisdiction of Incorporation or Organization
Cass & Co.	Cayman Islands
CDV I Incorporated	Delaware
Comerica AHOC, LLC	Delaware
Comerica Assurance Ltd.	Bermuda
Comerica Bank	Texas
Comerica Bank & Trust, National Association	United States
Comerica Capital Advisors Incorporated	Delaware
Comerica Capital Markets Corporation	Michigan
Comerica Coastal Incorporated	Delaware
Comerica do Brasil Participacoes e Servicos Ltda.	Brazil
Comerica Equities Incorporated	Delaware
Comerica Financial Incorporated (f/k/a/ Comerica AutoLease, Inc.)	Michigan
Comerica Holdings Incorporated	Delaware
Comerica Insurance Group, Inc.	Michigan
Comerica Insurance Services, Inc.	Michigan
Comerica Insurance Services of Texas Incorporated (f/k/a CMA Insurance Services, Inc.)	Texas
Comerica International Corporation	USA
Comerica Investments, LLC	Delaware
Comerica Investment Services, Inc.	Michigan
Comerica Leasing Corporation (f/k/a CMCA Lease, Inc.)	Michigan
Comerica Management Company	Michigan
Comerica Merchant Services, Inc.	Delaware
Comerica Properties Corporation	Michigan
Comerica Securities, Inc.	Michigan
Comerica Ventures Incorporated (f/k/a Imperial Ventures, Inc.)	California

Comerica West Enterprises Incorporated	Delaware
Comerica West Financial Incorporated	Delaware
DFP Luxembourg S.A.	Luxembourg
Imperial Capital Trust I	Delaware
Interstate Select Insurance Services, Inc.	California
ROC Technologies Inc.	Delaware
SCFS Reverse Exchange, LLC (f/k/a NBF Reverse Exchange, LLC)	Delaware
Project Royalty, LLC	Delaware
FR Huntington Square, LLC	Delaware
Greenbrier Endeavor, LLC	Delaware
Royal Palm Holding, L.L.C.	Delaware
Hyatt Bethesda Hotel, LLC	Delaware
VRB Corp.	Michigan
VRB Catron Ranch Owner, LLC	Delaware
VRB Croftwood, LLC	Delaware
VRB Mesa Ranch Plaza, LLC	Delaware
VRB Rancho Encantado, LLC	Delaware
VRB Santa Paula Development, LLC	Delaware
VRB Sundance Village, LLC	Delaware
VRB Spanish Oaks, LLC	Delaware
VRB Wasco, LLC	Delaware
WAM Holdings, Inc.	Delaware
Munder UK, L.L.C.	Delaware
Wilson, Kemp & Associates, Inc.	Michigan
World Asset Management, Inc.	Delaware