Supplement dated June
17, 2024
to the Prospectus and Summary Prospectus of the following Fund:
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Prospectus and Summary Prospectus Dated
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Columbia Acorn International SelectSM
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Effective on or about September 3, 2024 (the Effective Date), the Fund's principal
investment strategies and the Fund's primary and secondary benchmarks will change. Accordingly, on the Effective Date, the Fund's Prospectus and Summary Prospectus will be revised as described below.
The first three paragraphs under the heading "Principal Investment Strategies" in the
Summary Prospectus and in the "Summary of the Fund" and "More Information About the Fund" sections of the Prospectus will be superseded and replaced with the following:
Under normal circumstances, the Fund invests at least 65% of its net assets in foreign companies in developed markets (for example, Japan, France and the United Kingdom). The Fund also may invest up to 20% of its net assets in
companies in emerging markets (for example, China, India and Brazil). The Fund generally invests in at least three countries other than the United States but may invest up to 25%
of its total assets in securities of U.S. issuers.
Under normal circumstances, the Fund invests a majority
of its net assets in the common stock of companies with market capitalizations generally in the range of market capitalizations in the MSCI EAFE Growth Index (Net), the Fund's primary benchmark (the Index), at the time of purchase (between $893 million and $422.3 billion as of April 30,
2024). The market capitalization range and composition of companies in the Index are
subject to change. As such, the size of the companies in which the Fund invests may change. The Fund determines a company’s market
capitalization at the time of investment. As long as a majority of its net assets are invested in companies within the market capitalization range of the Index, the Fund may continue to hold and make new investments in a security even
if the company’s market capitalization grows beyond the market capitalization of the largest company within the range of the Index or falls below the market capitalization of the smallest company within the Index.
The rest of each section will remain unchanged.
The first paragraph under the heading "Performance Information" in the Summary Prospectus and in the "Summary of the Fund" section of the Prospectus will be superseded and replaced with the
following:
The
following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. Class S shares of the Fund had not
commenced operations as of the date of this prospectus and have no performance information to report. The bar chart shows how the Fund’s Class Inst share performance has varied for each full calendar year shown. The table below the bar chart compares the Fund’s
returns for the periods shown with those of the MSCI EAFE Growth Index (Net), the Fund's primary benchmark, and those of the MSCI EAFE Index (Net), the Fund's secondary benchmark. The MSCI EAFE Growth Index (Net) captures large- and mid-cap
securities exhibiting overall growth style characteristics across 21 developed market countries around the world, excluding the U.S. and Canada. The MSCI EAFE Index (Net) is an
equity index that captures large- and mid-cap representation across 21 developed market countries around the world, excluding the U.S. and Canada. As of April 30, 2024, the MSCI EAFE Index (Net) had 766 constituents and covered approximately 85% of the free float-adjusted
market capitalization in each country.
Effective September 3, 2024, the Fund compares its performance to that of the MSCI EAFE Growth Index (Net) and the MSCI EAFE Index (Net) (the New Indices). Prior to this date, the Fund compared its performance to that of the MSCI
ACWI ex USA Growth Index (Net) and the MSCI ACWI ex USA Index (Net) (the Former Indices). The Fund changed its primary and secondary benchmarks in connection with Board-approved
changes to its principal investment strategies that became effective September 3, 2024. The Investment Manager believes that the New Indices provide more appropriate comparisons than the Former Indices for investors measuring the Fund's relative performance.
Information on the Former Indices will be shown for a one-year transition period.
The Fund’s performance prior to September 3, 2024 reflects returns achieved pursuant to different principal
investment strategies. If the Fund's current strategies had been in place for the prior periods, results shown would have been different.
The "Average Annual Total Returns After Applicable Sales Charges" table under the heading "Performance Information" in the Summary Prospectus and in the "Summary of the Fund" section of the Prospectus will be superseded and replaced with the following: