<SEC-DOCUMENT>0000876661-22-000361-index.html : 20220411
<SEC-HEADER>0000876661-22-000361.hdr.sgml : 20220411
<ACCEPTANCE-DATETIME>20220411125140
ACCESSION NUMBER:		0000876661-22-000361
CONFORMED SUBMISSION TYPE:	25-NSE
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20220411
DATE AS OF CHANGE:		20220411
EFFECTIVENESS DATE:		20220411

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BLACKROCK MUNIHOLDINGS INVESTMENT QUALITY FUND
		CENTRAL INDEX KEY:			0001045126
		IRS NUMBER:				223536487
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		25-NSE
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13399
		FILM NUMBER:		22819131

	BUSINESS ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
		BUSINESS PHONE:		800-441-7762

	MAIL ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLACKROCK MUNIHOLDINGS INSURED INVESTMENT FUND
		DATE OF NAME CHANGE:	20080926

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLACKROCK MUNIHOLDINGS FLORIDA INSURED FUND, INC.
		DATE OF NAME CHANGE:	20070611

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MUNIHOLDINGS FLORIDA INSURED FUND INC
		DATE OF NAME CHANGE:	19970828

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NEW YORK STOCK EXCHANGE LLC
		CENTRAL INDEX KEY:			0000876661
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			NY

	FILING VALUES:
		FORM TYPE:		25-NSE

	BUSINESS ADDRESS:	
		STREET 1:		11 WALL STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10005
		BUSINESS PHONE:		212-656-2060

	MAIL ADDRESS:	
		STREET 1:		11 WALL STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10005

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NEW YORK STOCK EXCHANGE INC
		DATE OF NAME CHANGE:	19910628
</SEC-HEADER>
<DOCUMENT>
<TYPE>25-NSE
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.25
<SEQUENCE>2
<FILENAME>ruleprovisionnotice.htm
<TEXT>
Document 2 - file: ruleprovisionnotice.htm

</DOCUMENT>
</SEC-DOCUMENT>