EDGAR Filing Documents for 0001193125-18-080703

Form 497 - Definitive materials:

SEC Accession No. 0001193125-18-080703

Filing Date

2018-03-13

Accepted

2018-03-13 16:21:13

Documents

Effectiveness Date

2018-03-13

Document Format Files

Seq	Description	Document	Type	Size
1	COLUMBIA ACORN TRUST	d505386d497.htm	497	712
	Complete submission text file	0001193125-18-080703.txt		542910

Data Files

Seq	Description	Document	Type	Size
2	XBRL INSTANCE DOCUMENT	cat-20180228.xml	EX-101.INS	67533
3	XBRL TAXONOMY EXTENSION SCHEMA	cat-20180228.xsd	EX-101.SCH	4204
4	XBRL TAXONOMY EXTENSION DEFINITION LINKBASE	cat-20180228_def.xml	EX-101.DEF	85030
5	XBRL TAXONOMY EXTENSION LABEL LINKBASE	cat-20180228_lab.xml	EX-101.LAB	121732
6	XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE	cat-20180228_pre.xml	EX-101.PRE	74318

Series and Classes/Contracts Information:

Existing
	Status	Name	Ticker Symbol
CIK 0000002110
Series S000009189		Columbia Thermostat Fund
Class/Contract C000024974		Columbia Thermostat Fund Class A	CTFAX
Class/Contract C000024976		Columbia Thermostat Fund Class C	CTFDX
Class/Contract C000024977		Columbia Thermostat Fund Institutional Class	COTZX
Class/Contract C000122749		Columbia Thermostat Fund Advisor Class	CTORX
Class/Contract C000122750		Columbia Thermostat Fund Institutional 2 Class	CQTRX
Class/Contract C000122751		Columbia Thermostat Fund Institutional 3 Class	CYYYX

Mailing Address 227 W MONROE STE 3000 CHICAGO IL 60606

Business Address 227 W MONROE STE 3000 CHICAGO IL 60606 3126349200

COLUMBIA ACORN TRUST (Filer) CIK: 0000002110 (see all company filings)