<SEC-DOCUMENT>0001193125-15-402453-index.html : 20151214 <SEC-HEADER>0001193125-15-402453.hdr.sgml : 20151214 <ACCEPTANCE-DATETIME>20151214153834 ACCESSION NUMBER: 0001193125-15-402453 CONFORMED SUBMISSION TYPE: 497K PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20151214 DATE AS OF CHANGE: 20151214 EFFECTIVENESS DATE: 20151214 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: 497K SEC ACT: 1933 Act SEC FILE NUMBER: 002-34223 FILM NUMBER: 151285895 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 <SERIES-AND-CLASSES-CONTRACTS-DATA> <EXISTING-SERIES-AND-CLASSES-CONTRACTS> <SERIES> <OWNER-CIK>0000002110 <SERIES-ID>S000009184 <SERIES-NAME>Columbia Acorn Fund <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024954 <CLASS-CONTRACT-NAME>Columbia Acorn Fund Class A <CLASS-CONTRACT-TICKER-SYMBOL>LACAX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024955 <CLASS-CONTRACT-NAME>Columbia Acorn Fund Class B <CLASS-CONTRACT-TICKER-SYMBOL>LACBX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024956 <CLASS-CONTRACT-NAME>Columbia Acorn Fund Class C <CLASS-CONTRACT-TICKER-SYMBOL>LIACX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024957 <CLASS-CONTRACT-NAME>Columbia Acorn Fund Class Z <CLASS-CONTRACT-TICKER-SYMBOL>ACRNX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000094632 <CLASS-CONTRACT-NAME>Columbia Acorn Fund Class I <CLASS-CONTRACT-TICKER-SYMBOL>CANIX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122735 <CLASS-CONTRACT-NAME>Columbia Acorn Fund Class R4 <CLASS-CONTRACT-TICKER-SYMBOL>CEARX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122736 <CLASS-CONTRACT-NAME>Columbia Acorn Fund Class R5 <CLASS-CONTRACT-TICKER-SYMBOL>CRBRX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122737 <CLASS-CONTRACT-NAME>Columbia Acorn Fund Class Y <CLASS-CONTRACT-TICKER-SYMBOL>CRBYX </CLASS-CONTRACT> </SERIES> </EXISTING-SERIES-AND-CLASSES-CONTRACTS> </SERIES-AND-CLASSES-CONTRACTS-DATA> </SEC-HEADER> <DOCUMENT> <TYPE>497K <SEQUENCE>1 <FILENAME>d84083d497k.htm <DESCRIPTION>COLUMBIA ACORN TRUST <TEXT> Document 1 - file: d84083d497k.htm
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