    <SEC-DOCUMENT>0001104659-20-046205-index.html : 20200414
    <SEC-HEADER>0001104659-20-046205.hdr.sgml : 20200414
    <ACCEPTANCE-DATETIME>20200414111048
    ACCESSION NUMBER:		0001104659-20-046205
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		11
    CONFORMED PERIOD OF REPORT:	20200611
    FILED AS OF DATE:		20200414
    DATE AS OF CHANGE:		20200414
    EFFECTIVENESS DATE:		20200414

    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:		20790348

    	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 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:		20790347

    	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

    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:		20790345

    	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:		20790346

    	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
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>a20-11197_1def14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: a20-11197_1def14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>j20111972_aa001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: j20111972_aa001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>g111971bki001.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: g111971bki001.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>g111971bki002.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: g111971bki002.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>g111971bii001.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: g111971bii001.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g111971bii002.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: g111971bii002.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>g111971bgi001.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g111971bgi001.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>g111971bgi002.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: g111971bgi002.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>g111971cai001.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: g111971cai001.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>g111971bmi001.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: g111971bmi001.gif

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>g111971bmi002.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: g111971bmi002.gif

    </DOCUMENT>
    </SEC-DOCUMENT>