Columbia Acorn Trust

-----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, GdZNwp8KftQ14MdtLn1y10mUuE6QOhhx3T1W0eO8yW8PtkYUq8KvlsHFpcud2xro F33Yi0u5jT4LCQ+PmVH0Vw== 0001193125-10-277442.txt : 20101209 0001193125-10-277442.hdr.sgml : 20101209 20101209151830 ACCESSION NUMBER: 0001193125-10-277442 CONFORMED SUBMISSION TYPE: 485APOS PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20101209 DATE AS OF CHANGE: 20101209 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: 485APOS SEC ACT: 1933 Act SEC FILE NUMBER: 333-170630 FILM NUMBER: 101242209 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 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: 485APOS SEC ACT: 1940 Act SEC FILE NUMBER: 811-01829 FILM NUMBER: 101242210 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

S000009185 Columbia Acorn International

C000097732 Columbia Acorn International Class R

C000097733 Columbia Acorn International Class R5

485APOS 1 d485apos.htm COLUMBIA ACORN TRUST Columbia Acorn Trust

December 9, 2010

VIA EDGAR

EDGAR Operations Branch

Division of Investment Management

Securities and Exchange Commission

450 Fifth Street, N.W.

Washington, D.C. 20549

Re:	Columbia Acorn Trust (the “Trust”)

Columbia Acorn International (the “Fund”)

(No. 333-170630)

Dear Sir or Madam:

Pursuant to Rule 313 of Regulation S-T, the Trust hereby requests a class identifier for each of the Fund’s Class R and Class R5 shares, which were registered electronically via EDGAR through a registration statement on Form N-14 filed by the Trust on November 16, 2010 (accession number 0001193125-10-261888). This unofficial filing is being made via EDGAR submission type 485APOS using the Securities Act of 1933 file number assigned to the aforementioned registration statement on Form N-14 (333-170630) solely for the purpose of obtaining class identifiers for the Fund, pursuant to the “Notice and FAQ’s re: Mandatory Series and Class (Contract) Identifiers” (found at http://www.sec.gov/info/edgar/ednews/seriesclassfaq063006.htm).

If you have any questions or would like further information, please contact Jacob Comer at 617.951.7913.

Very truly yours,

/s/ Christopher O. Petersen

Christopher O. Petersen

Assistant Secretary

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