<SEC-DOCUMENT>0001104659-21-016381-index.html : 20210209
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<ACCEPTANCE-DATETIME>20210209091910
ACCESSION NUMBER:		0001104659-21-016381
CONFORMED SUBMISSION TYPE:	13F-HR
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20201231
FILED AS OF DATE:		20210209
DATE AS OF CHANGE:		20210209
EFFECTIVENESS DATE:		20210209

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BLAIR WILLIAM & CO/IL
		CENTRAL INDEX KEY:			0000902367
		IRS NUMBER:				362214610
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		13F-HR
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	028-04871
		FILM NUMBER:		21604099

	BUSINESS ADDRESS:	
		STREET 1:		150 NORTH RIVERSIDE PLAZA
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606-5312
		BUSINESS PHONE:		3122361600

	MAIL ADDRESS:	
		STREET 1:		150 NORTH RIVERSIDE PLAZA
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
</SEC-HEADER>
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Document 1 - RAW XML: primary_doc.xml

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<DOCUMENT>
<TYPE>INFORMATION TABLE
<SEQUENCE>2
<FILENAME>infotable.xml
<TEXT>
Document 2 - file: infotable.html

Document 2 - RAW XML: infotable.xml

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