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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000000000-10-012332.txt : 20100518
<SEC-HEADER>0000000000-10-012332.hdr.sgml : 20100518
<ACCEPTANCE-DATETIME>20100304153933
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0000000000-10-012332
CONFORMED SUBMISSION TYPE:	UPLOAD
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20100304

FILED FOR:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WINTRUST FINANCIAL CORP
		CENTRAL INDEX KEY:			0001015328
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				363873352
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		UPLOAD

	BUSINESS ADDRESS:	
		STREET 1:		727 N BANK LANE
		CITY:			LAKE FOREST
		STATE:			IL
		ZIP:			60045
		BUSINESS PHONE:		8476154096

	MAIL ADDRESS:	
		STREET 1:		727 N BANK LN
		CITY:			LAKE FOREST
		STATE:			IL
		ZIP:			60045
</SEC-HEADER>
<DOCUMENT>
<TYPE>LETTER
<SEQUENCE>1
<FILENAME>filename1.txt
<TEXT>


									March 3, 2010


By U.S. Mail and Facsimile to (847) 615-4091


Mr. Edward J. Wehmer
President and Chief Executive Officer
Wintrust Financial Corporation
727 North Bank Lane
Lake Forest, Illinois 60045

Re:	Wintrust Financial
File No. 000-21923
Form 10-K for the fiscal year ended December 31, 2008
      Definitive Schedule 14A filed April 20, 2009
Form 10-Q for the period ended March 31, 2009
Form 10-Q for the period ended June 30, 2009
Form 10-Q for the period ended September 30, 2009


Dear Mr. Wehmer:

      We have completed our review of your filings.  We have no
further comments at this time.


						Sincerely,


						Michael Clampitt
						Senior Attorney


</TEXT>
</DOCUMENT>
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