-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, VeVThAbASdjyyM6Mh0PUPQTCelURfgMhHdTu14cG/PggZsPU1fyedZX4duHqZRm4 nigsruS2AlNc2coitiAShA== 0001193125-09-099628.txt : 20090505 0001193125-09-099628.hdr.sgml : 20090505 20090505135245 ACCESSION NUMBER: 0001193125-09-099628 CONFORMED SUBMISSION TYPE: 497J PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20090505 DATE AS OF CHANGE: 20090505 EFFECTIVENESS DATE: 20090505 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: 497J SEC ACT: 1933 Act SEC FILE NUMBER: 002-34223 FILM NUMBER: 09796755 BUSINESS ADDRESS: STREET 1: 227 W MONROE STE 3000 CITY: CHICAGO STATE: IL ZIP: 60606 BUSINESS PHONE: 3126349200 MAIL ADDRESS: STREET 1: 227 W MONROE STE 3000 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 0000002110 S000009184 Columbia Acorn Fund C000024954 Columbia Acorn Fund Class A LACAX C000024955 Columbia Acorn Fund Class B LACBX C000024956 Columbia Acorn Fund Class C LIACX C000024957 Columbia Acorn Fund Class Z ACRNX 0000002110 S000009185 Columbia Acorn International C000024958 Columbia Acorn International Class A LAIAX C000024959 Columbia Acorn International Class B LIABX C000024960 Columbia Acorn International Class C LAICX C000024961 Columbia Acorn International Class Z ACINX 0000002110 S000009186 Columbia Acorn USA C000024962 Columbia Acorn USA Class A LAUAX C000024963 Columbia Acorn USA Class B LAUBX C000024964 Columbia Acorn USA Class C LAUCX C000024965 Columbia Acorn USA Class Z AUSAX 0000002110 S000009187 Columbia Acorn Select C000024966 Columbia Acorn Select Class A LTFAX C000024967 Columbia Acorn Select Class B LTFBX C000024968 Columbia Acorn Select Class C LTFCX C000024969 Columbia Acorn Select Class Z ACTWX 0000002110 S000009188 Columbia Acorn International Select C000024970 Columbia Acorn International Select Class A LAFAX C000024971 Columbia Acorn International Select Class B LFFBX C000024972 Columbia Acorn International Select Class C LFFCX C000024973 Columbia Acorn International Select Class Z ACFFX 0000002110 S000009189 Columbia Thermostat Fund C000024974 Columbia Thermostat Fund Class A CTFAX C000024975 Columbia Thermostat Fund Class B CTFBX C000024976 Columbia Thermostat Fund Class C CTFDX C000024977 Columbia Thermostat Fund Class Z COTZX 497J 1 d497j.htm COLUMBIA ACORN TRUST Columbia Acorn Trust

COLUMBIA ACORN TRUST

227 W. MONROE STREET, SUITE 3000

CHICAGO, IL 60602

May 5, 2009

BY EDGAR

Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Ladies and Gentlemen:

Columbia Acorn Trust

1933 Act Registration No. 2-34223

1940 Act Registration No. 811-1829

In accordance with Rule 497(j) of Regulation C under the Securities Act of 1933, Columbia Acorn Trust (the “Trust”) certifies that:

 

  a. the form of prospectuses and statement of additional information that would have been filed under paragraph (c) of Rule 497 would not have differed from that contained in the most recent post-effective amendment to the Trust’s registration statement on Form N-1A; and

 

  b. the text of the most recent post-effective amendment to the Trust’s registration statement was filed with the Commission via EDGAR on April 30, 2009.

Very truly yours,

COLUMBIA ACORN TRUST

By: /s/ Bruce H. Lauer

Bruce H. Lauer, Vice President, Secretary and

Treasurer

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