<SEC-DOCUMENT>0001193125-17-274236-index.html : 20170831 <SEC-HEADER>0001193125-17-274236.hdr.sgml : 20170831 <ACCEPTANCE-DATETIME>20170831150939 ACCESSION NUMBER: 0001193125-17-274236 CONFORMED SUBMISSION TYPE: N-CSRS PUBLIC DOCUMENT COUNT: 29 CONFORMED PERIOD OF REPORT: 20170630 FILED AS OF DATE: 20170831 DATE AS OF CHANGE: 20170831 EFFECTIVENESS DATE: 20170831 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: N-CSRS SEC ACT: 1940 Act SEC FILE NUMBER: 811-01829 FILM NUMBER: 171063227 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>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>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> <SERIES> <OWNER-CIK>0000002110 <SERIES-ID>S000009185 <SERIES-NAME>Columbia Acorn International <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024958 <CLASS-CONTRACT-NAME>Columbia Acorn International Class A <CLASS-CONTRACT-TICKER-SYMBOL>LAIAX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024959 <CLASS-CONTRACT-NAME>Columbia Acorn International Class B <CLASS-CONTRACT-TICKER-SYMBOL>LIABX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024960 <CLASS-CONTRACT-NAME>Columbia Acorn International Class C <CLASS-CONTRACT-TICKER-SYMBOL>LAICX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024961 <CLASS-CONTRACT-NAME>Columbia Acorn International Class Z <CLASS-CONTRACT-TICKER-SYMBOL>ACINX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000097732 <CLASS-CONTRACT-NAME>Columbia Acorn International Class R <CLASS-CONTRACT-TICKER-SYMBOL>CACRX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000097733 <CLASS-CONTRACT-NAME>Columbia Acorn International Class R5 <CLASS-CONTRACT-TICKER-SYMBOL>CAIRX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122738 <CLASS-CONTRACT-NAME>Columbia Acorn International Class R4 <CLASS-CONTRACT-TICKER-SYMBOL>CCIRX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122739 <CLASS-CONTRACT-NAME>Columbia Acorn International Class Y <CLASS-CONTRACT-TICKER-SYMBOL>CCYIX </CLASS-CONTRACT> </SERIES> <SERIES> <OWNER-CIK>0000002110 <SERIES-ID>S000009186 <SERIES-NAME>Columbia Acorn USA <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024962 <CLASS-CONTRACT-NAME>Columbia Acorn USA Class A <CLASS-CONTRACT-TICKER-SYMBOL>LAUAX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024964 <CLASS-CONTRACT-NAME>Columbia Acorn USA Class C <CLASS-CONTRACT-TICKER-SYMBOL>LAUCX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024965 <CLASS-CONTRACT-NAME>Columbia Acorn USA Class Z <CLASS-CONTRACT-TICKER-SYMBOL>AUSAX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122740 <CLASS-CONTRACT-NAME>Columbia Acorn USA Class R4 <CLASS-CONTRACT-TICKER-SYMBOL>CUSAX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122741 <CLASS-CONTRACT-NAME>Columbia Acorn USA Class R5 <CLASS-CONTRACT-TICKER-SYMBOL>CYSRX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122742 <CLASS-CONTRACT-NAME>Columbia Acorn USA Class Y <CLASS-CONTRACT-TICKER-SYMBOL>CUSYX </CLASS-CONTRACT> </SERIES> <SERIES> <OWNER-CIK>0000002110 <SERIES-ID>S000009187 <SERIES-NAME>Columbia Acorn Select <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024966 <CLASS-CONTRACT-NAME>Columbia Acorn Select Class A <CLASS-CONTRACT-TICKER-SYMBOL>LTFAX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024968 <CLASS-CONTRACT-NAME>Columbia Acorn Select Class C <CLASS-CONTRACT-TICKER-SYMBOL>LTFCX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024969 <CLASS-CONTRACT-NAME>Columbia Acorn Select Class Z <CLASS-CONTRACT-TICKER-SYMBOL>ACTWX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122743 <CLASS-CONTRACT-NAME>Columbia Acorn Select Class R4 <CLASS-CONTRACT-TICKER-SYMBOL>CSSRX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122744 <CLASS-CONTRACT-NAME>Columbia Acorn Select Class R5 <CLASS-CONTRACT-TICKER-SYMBOL>CSLRX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122745 <CLASS-CONTRACT-NAME>Columbia Acorn Select Class Y <CLASS-CONTRACT-TICKER-SYMBOL>CSLYX </CLASS-CONTRACT> </SERIES> <SERIES> <OWNER-CIK>0000002110 <SERIES-ID>S000009188 <SERIES-NAME>Columbia Acorn International Select <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024970 <CLASS-CONTRACT-NAME>Columbia Acorn International Select Class A <CLASS-CONTRACT-TICKER-SYMBOL>LAFAX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024972 <CLASS-CONTRACT-NAME>Columbia Acorn International Select Class C <CLASS-CONTRACT-TICKER-SYMBOL>LFFCX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000024973 <CLASS-CONTRACT-NAME>Columbia Acorn International Select Class Z <CLASS-CONTRACT-TICKER-SYMBOL>ACFFX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122746 <CLASS-CONTRACT-NAME>Columbia Acorn International Select Class R5 <CLASS-CONTRACT-TICKER-SYMBOL>CRIRX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122747 <CLASS-CONTRACT-NAME>Columbia Acorn International Select Class Y <CLASS-CONTRACT-TICKER-SYMBOL>CSIRX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122748 <CLASS-CONTRACT-NAME>Columbia Acorn International Select Class R4 <CLASS-CONTRACT-TICKER-SYMBOL>CILRX </CLASS-CONTRACT> </SERIES> <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> <SERIES> <OWNER-CIK>0000002110 <SERIES-ID>S000033621 <SERIES-NAME>Columbia Acorn European Fund <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000103324 <CLASS-CONTRACT-NAME>Columbia Acorn European Fund Class A <CLASS-CONTRACT-TICKER-SYMBOL>CAEAX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000103325 <CLASS-CONTRACT-NAME>Columbia Acorn European Fund Class C <CLASS-CONTRACT-TICKER-SYMBOL>CAECX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000103327 <CLASS-CONTRACT-NAME>Columbia Acorn European Fund Class Z <CLASS-CONTRACT-TICKER-SYMBOL>CAEZX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122752 <CLASS-CONTRACT-NAME>Columbia Acorn European Fund Class R5 <CLASS-CONTRACT-TICKER-SYMBOL>CAEEX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000144049 <CLASS-CONTRACT-NAME>Columbia Acorn European Fund Class R4 <CLASS-CONTRACT-TICKER-SYMBOL>CLOFX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000171393 <CLASS-CONTRACT-NAME>Columbia Acorn European Fund Class Y <CLASS-CONTRACT-TICKER-SYMBOL>CAEYX </CLASS-CONTRACT> </SERIES> <SERIES> <OWNER-CIK>0000002110 <SERIES-ID>S000033622 <SERIES-NAME>Columbia Acorn Emerging Markets Fund <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000103328 <CLASS-CONTRACT-NAME>Columbia Acorn Emerging Markets Fund Class A <CLASS-CONTRACT-TICKER-SYMBOL>CAGAX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000103329 <CLASS-CONTRACT-NAME>Columbia Acorn Emerging Markets Fund Class C <CLASS-CONTRACT-TICKER-SYMBOL>CGMCX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000103331 <CLASS-CONTRACT-NAME>Columbia Acorn Emerging Markets Fund Class Z <CLASS-CONTRACT-TICKER-SYMBOL>CEFZX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122753 <CLASS-CONTRACT-NAME>Columbia Acorn Emerging Markets Fund Class R4 <CLASS-CONTRACT-TICKER-SYMBOL>CAERX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000122754 <CLASS-CONTRACT-NAME>Columbia Acorn Emerging Markets Fund Class R5 <CLASS-CONTRACT-TICKER-SYMBOL>CANRX </CLASS-CONTRACT> <CLASS-CONTRACT> <CLASS-CONTRACT-ID>C000128887 <CLASS-CONTRACT-NAME>Columbia Acorn Emerging Markets Fund Class Y <CLASS-CONTRACT-TICKER-SYMBOL>CPHRX </CLASS-CONTRACT> </SERIES> </EXISTING-SERIES-AND-CLASSES-CONTRACTS> </SERIES-AND-CLASSES-CONTRACTS-DATA> </SEC-HEADER> <DOCUMENT> <TYPE>N-CSRS <SEQUENCE>1 <FILENAME>d312545dncsrs.htm <DESCRIPTION>COLUMBIA ACORN TRUST <TEXT> Document 1 - file: d312545dncsrs.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.CERT <SEQUENCE>2 <FILENAME>d312545dex99cert.htm <DESCRIPTION>SECTION 302 CERTIFICATION <TEXT> Document 2 - file: d312545dex99cert.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.906CERT <SEQUENCE>3 <FILENAME>d312545dex99906cert.htm <DESCRIPTION>SECTION 906 CERTIFICATION <TEXT> Document 3 - file: d312545dex99906cert.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>g312545g27w27.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 4 - file: g312545g27w27.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>5 <FILENAME>g312545g34r22.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 5 - file: g312545g34r22.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>6 <FILENAME>g312545g65s04.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 6 - file: g312545g65s04.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>7 <FILENAME>g312545img00d5aef121.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 7 - file: g312545img00d5aef121.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>g312545img040417875.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 8 - file: g312545img040417875.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>g312545img0c1cd13910.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 9 - file: g312545img0c1cd13910.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>10 <FILENAME>g312545img0d95815614.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 10 - file: g312545img0d95815614.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>g312545img1c67561f1.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 11 - file: g312545img1c67561f1.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>12 <FILENAME>g312545img24402f524.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 12 - file: g312545img24402f524.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>13 <FILENAME>g312545img28e0156013.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 13 - file: g312545img28e0156013.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>14 <FILENAME>g312545img3b58175820.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 14 - file: g312545img3b58175820.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>15 <FILENAME>g312545img6c0361137.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 15 - file: g312545img6c0361137.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>16 <FILENAME>g312545img7ef27cf49.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 16 - file: g312545img7ef27cf49.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>17 <FILENAME>g312545img812cb14d22.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 17 - file: g312545img812cb14d22.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>18 <FILENAME>g312545img874dc60923.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 18 - file: g312545img874dc60923.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>19 <FILENAME>g312545img87f02e8d19.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 19 - file: g312545img87f02e8d19.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>20 <FILENAME>g312545img910c96082.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 20 - file: g312545img910c96082.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>21 <FILENAME>g312545img92fd478816.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 21 - file: g312545img92fd478816.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>22 <FILENAME>g312545img9beb80a918.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 22 - file: g312545img9beb80a918.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>23 <FILENAME>g312545img9f8101c617.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 23 - file: g312545img9f8101c617.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>24 <FILENAME>g312545imgb084418011.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 24 - file: g312545imgb084418011.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>25 <FILENAME>g312545imgcbcdc26415.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 25 - file: g312545imgcbcdc26415.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>26 <FILENAME>g312545imgdd9dcd8812.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 26 - file: g312545imgdd9dcd8812.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>27 <FILENAME>g312545imge17e4bc98.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 27 - file: g312545imge17e4bc98.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>28 <FILENAME>g312545imgfbd170276.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 28 - file: g312545imgfbd170276.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>29 <FILENAME>g312545imgfbed7b9b3.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 29 - file: g312545imgfbed7b9b3.jpg
</DOCUMENT> </SEC-DOCUMENT>