EDGAR Filing Documents for 0000898432-10-001297

Form 497 - Definitive materials:

SEC Accession No. 0000898432-10-001297

Filing Date

2010-10-01

Accepted

2010-10-01 09:40:49

Documents

Effectiveness Date

2010-10-01

Document Format Files

Seq	Description	Document	Type	Size
1		a497.htm	497	10276
	Complete submission text file	0000898432-10-001297.txt		13118

Series and Classes/Contracts Information:

Existing
	Status	Name	Ticker Symbol
CIK 0000002110
Series S000009184		Columbia Acorn Fund
Class/Contract C000094632		Columbia Acorn Fund Class I
	Status	Name	Ticker Symbol
CIK 0000002110
Series S000009185		Columbia Acorn International
Class/Contract C000094633		Columbia Acorn International Class I
	Status	Name	Ticker Symbol
CIK 0000002110
Series S000009186		Columbia Acorn USA
Class/Contract C000094634		Columbia Acorn USA Class I
	Status	Name	Ticker Symbol
CIK 0000002110
Series S000009187		Columbia Acorn Select
Class/Contract C000094635		Columbia Acorn Select Class I
	Status	Name	Ticker Symbol
CIK 0000002110
Series S000009188		Columbia Acorn International Select
Class/Contract C000094636		Columbia Acorn International Select Class I

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)