UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	February 10, 2023 2:20 P.M.

Form:

N-14

CIK: 0000002110 Company Name: COLUMBIA ACORN TRUST File Number: 333-269553 SERIES/CLASSES (CONTRACTS) MERGERS CIK Series ID Class/Contract Name Acquiring: 0000002110 COLUMBIA ACORN TRUST S000009184 Columbia Acorn Fund C000024954 Columbia Acorn Fund Class A Target: 0000002110 COLUMBIA ACORN TRUST S000009186 Columbia Acorn USA C000024962 Columbia Acorn USA Class A CIK Series ID Class/Contract Name Acquiring: 0000002110 COLUMBIA ACORN TRUST S000009184 Columbia Acorn Fund C000024956 Columbia Acorn Fund Class C Target: 0000002110 COLUMBIA ACORN TRUST S000009186 Columbia Acorn USA C000024964 Columbia Acorn USA Class C CIK Series ID Class/Contract Name Acquiring: 0000002110 COLUMBIA ACORN TRUST S000009184 Columbia Acorn Fund C000024957 Columbia Acorn Fund Institutional Class Target: 0000002110 COLUMBIA ACORN TRUST S000009186 Columbia Acorn USA C000024965 Columbia Acorn USA Institutional Class CIK Series ID Class/Contract Name Acquiring: 0000002110 COLUMBIA ACORN TRUST S000009184 Columbia Acorn Fund C000122735 Columbia Acorn Fund Advisor Class Target: 0000002110 COLUMBIA ACORN TRUST S000009186 Columbia Acorn USA C000122740 Columbia Acorn USA Advisor Class CIK Series ID Class/Contract Name Acquiring: 0000002110 COLUMBIA ACORN TRUST S000009184 Columbia Acorn Fund C000122736 Columbia Acorn Fund Institutional 2 Class Target: 0000002110 COLUMBIA ACORN TRUST S000009186 Columbia Acorn USA C000122741 Columbia Acorn USA Institutional 2 Class CIK Series ID Class/Contract Name Acquiring: 0000002110 COLUMBIA ACORN TRUST S000009184 Columbia Acorn Fund C000122737 Columbia Acorn Fund Institutional 3 Class Target: 0000002110 COLUMBIA ACORN TRUST S000009186 Columbia Acorn USA C000122742 Columbia Acorn USA Institutional 3 Class