    <SEC-DOCUMENT>0001104659-21-049642-index.html : 20210413
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    <ACCEPTANCE-DATETIME>20210413122917
    ACCESSION NUMBER:		0001104659-21-049642
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		11
    CONFORMED PERIOD OF REPORT:	20210610
    FILED AS OF DATE:		20210413
    DATE AS OF CHANGE:		20210413

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			TEKLA HEALTHCARE INVESTORS
    		CENTRAL INDEX KEY:			0000805267
    		IRS NUMBER:				046564285
    		STATE OF INCORPORATION:			MA
    		FISCAL YEAR END:			0930

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	811-04889
    		FILM NUMBER:		21822563

    	BUSINESS ADDRESS:
    		STREET 1:		100 FEDERAL STREET
    		STREET 2:		19TH FLOOR
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110
    		BUSINESS PHONE:		6177728515

    	MAIL ADDRESS:
    		STREET 1:		100 FEDERAL STREET
    		STREET 2:		19TH FLOOR
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	H&Q HEALTHCARE INVESTORS
    		DATE OF NAME CHANGE:	19920703

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Tekla Healthcare Opportunities Fund
    		CENTRAL INDEX KEY:			0001604522
    		IRS NUMBER:				465317248
    		STATE OF INCORPORATION:			MA
    		FISCAL YEAR END:			0930

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	811-22955
    		FILM NUMBER:		21822566

    	BUSINESS ADDRESS:
    		STREET 1:		100 FEDERAL STREET
    		STREET 2:		19TH FLOOR
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110
    		BUSINESS PHONE:		617-772-8500

    	MAIL ADDRESS:
    		STREET 1:		100 FEDERAL STREET
    		STREET 2:		19TH FLOOR
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Tekla Healthcare Growth & Income Fund
    		DATE OF NAME CHANGE:	20140402

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Tekla World Healthcare Fund
    		CENTRAL INDEX KEY:			0001635977
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			MA

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	811-23037
    		FILM NUMBER:		21822564

    	BUSINESS ADDRESS:
    		STREET 1:		100 FEDERAL STREET
    		STREET 2:		19TH FLOOR
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110
    		BUSINESS PHONE:		(617) 772-8515

    	MAIL ADDRESS:
    		STREET 1:		100 FEDERAL STREET
    		STREET 2:		19TH FLOOR
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			TEKLA LIFE SCIENCES INVESTORS
    		CENTRAL INDEX KEY:			0000884121
    		IRS NUMBER:				043147016
    		STATE OF INCORPORATION:			MA
    		FISCAL YEAR END:			0930

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	811-06565
    		FILM NUMBER:		21822565

    	BUSINESS ADDRESS:
    		STREET 1:		100 FEDERAL STREET
    		STREET 2:		19TH FLOOR
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110
    		BUSINESS PHONE:		6177728515

    	MAIL ADDRESS:
    		STREET 1:		100 FEDERAL STREET
    		STREET 2:		19TH FLOOR
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	H&Q LIFE SCIENCES INVESTORS
    		DATE OF NAME CHANGE:	19920929
    </SEC-HEADER>
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    <TYPE>DEF 14A
    <SEQUENCE>1
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