EDGAR Filing Documents for 0001193125-12-508373

Form 497 - Definitive materials:

SEC Accession No. 0001193125-12-508373

Filing Date

2012-12-19

Accepted

2012-12-19 16:20:04

Documents

Effectiveness Date

2012-12-19

Document Format Files

Seq	Description	Document	Type	Size
1	COLUMBIA ACORN TRUST	d455095d497.htm	497	640
	Complete submission text file	0001193125-12-508373.txt		567748

Data Files

Seq	Description	Document	Type	Size
2	XBRL INSTANCE DOCUMENT	cik0000002110-2012121001.xml	EX-101.INS	35645
3	XBRL TAXONOMY EXTENSION SCHEMA	cik0000002110-2012121001.xsd	EX-101.SCH	3923
4	XBRL TAXONOMY EXTENSION CALCULATION LINKBASE	cik0000002110-2012121001_cal.xml	EX-101.CAL	5074
5	XBRL TAXONOMY EXTENSION DEFINITION LINKBASE	cik0000002110-2012121001_def.xml	EX-101.DEF	4216
6	XBRL TAXONOMY EXTENSION LABEL LINKBASE	cik0000002110-2012121001_lab.xml	EX-101.LAB	150379
7	XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE	cik0000002110-2012121001_pre.xml	EX-101.PRE	32637

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 C000024975		Columbia Thermostat Fund Class B	CTFBX
Class/Contract C000024976		Columbia Thermostat Fund Class C	CTFDX
Class/Contract C000024977		Columbia Thermostat Fund Class Z	COTZX
Class/Contract C000122749		Columbia Thermostat Fund Class R4	CTORX
Class/Contract C000122750		Columbia Thermostat Fund Class R5	CQTRX
Class/Contract C000122751		Columbia Thermostat Fund Class Y	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)