<SEC-DOCUMENT>0001193125-23-258451-index.html : 20231018
<SEC-HEADER>0001193125-23-258451.hdr.sgml : 20231018
<ACCEPTANCE-DATETIME>20231018155058
ACCESSION NUMBER:		0001193125-23-258451
CONFORMED SUBMISSION TYPE:	40-17G
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20231018
DATE AS OF CHANGE:		20231018
EFFECTIVENESS DATE:		20231018

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COLUMBIA ACORN TRUST
		CENTRAL INDEX KEY:			0000002110
		IRS NUMBER:				362692100
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		40-17G
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-01829
		FILM NUMBER:		231332183

	BUSINESS ADDRESS:	
		STREET 1:		71 S. WACKER DRIVE, SUITE 2500
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3126349200

	MAIL ADDRESS:	
		STREET 1:		71 S. WACKER DRIVE, SUITE 2500
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	LIBERTY ACORN TRUST
		DATE OF NAME CHANGE:	20010424

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ACORN INVESTMENT TRUST
		DATE OF NAME CHANGE:	19940204

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ACORN FUND INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>40-17G
<SEQUENCE>1
<FILENAME>d565356d4017g.htm
<DESCRIPTION>COLUMBIA ACORN TRUST
<TEXT>
Document 1 - file: d565356d4017g.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g565356dsp01a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g565356dsp01a.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g565356xdsp001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g565356xdsp001.jpg

</DOCUMENT>
</SEC-DOCUMENT>