<SEC-DOCUMENT>0001193125-17-328444-index.html : 20171101 <SEC-HEADER>0001193125-17-328444.hdr.sgml : 20171101 <ACCEPTANCE-DATETIME>20171101090232 ACCESSION NUMBER: 0001193125-17-328444 CONFORMED SUBMISSION TYPE: 497K PUBLIC DOCUMENT COUNT: 4 FILED AS OF DATE: 20171101 DATE AS OF CHANGE: 20171101 EFFECTIVENESS DATE: 20171101 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: 171167471 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>S000009189 <SERIES-NAME>Columbia Thermostat Fund <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024974 <CLASS-CONTRACT-NAME>Columbia Thermostat Fund Class A <CLASS-CONTRACT-TICKER-SYMBOL>CTFAX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024976 <CLASS-CONTRACT-NAME>Columbia Thermostat Fund Class C <CLASS-CONTRACT-TICKER-SYMBOL>CTFDX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024977 <CLASS-CONTRACT-NAME>Columbia Thermostat Fund Class Z <CLASS-CONTRACT-TICKER-SYMBOL>COTZX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122749 <CLASS-CONTRACT-NAME>Columbia Thermostat Fund Class R4 <CLASS-CONTRACT-TICKER-SYMBOL>CTORX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122750 <CLASS-CONTRACT-NAME>Columbia Thermostat Fund Class R5 <CLASS-CONTRACT-TICKER-SYMBOL>CQTRX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122751 <CLASS-CONTRACT-NAME>Columbia Thermostat Fund Class Y <CLASS-CONTRACT-TICKER-SYMBOL>CYYYX </CLASS-CONTRACT> </SERIES> </EXISTING-SERIES-AND-CLASSES-CONTRACTS> </SERIES-AND-CLASSES-CONTRACTS-DATA> </SEC-HEADER> <DOCUMENT> <TYPE>497K <SEQUENCE>1 <FILENAME>d482081d497k.htm <DESCRIPTION>COLUMBIA ACORN TRUST <TEXT> Document 1 - file: d482081d497k.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>g476983g03m17.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 3 - file: g476983g03m17.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>g476983phone.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 4 - file: g476983phone.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>5 <FILENAME>g476983tel.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 5 - file: g476983tel.jpg
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