COLUMBIA ACORN TRUST
SEC Filing List

CIK: 0000002110

Form Type:

Year

Form	Description	Owner/Filer	Filing Agent	Date	Actions
NPORT-P	Monthly Portfolio Investments Report on ...		State Street Bank & Trust CO Fund Admin Dept. /fa	05/28/2026	View ... Create Alert Filing info Download PDF Copy Link
NPORT-P	Monthly Portfolio Investments Report on ...		State Street Bank & Trust CO Fund Admin Dept. /fa	05/28/2026	View ... Create Alert Filing info Download PDF Copy Link
NPORT-P	Monthly Portfolio Investments Report on ...		State Street Bank & Trust CO Fund Admin Dept. /fa	05/28/2026	View ... Create Alert Filing info Download PDF Copy Link
NPORT-P	Monthly Portfolio Investments Report on ...		State Street Bank & Trust CO Fund Admin Dept. /fa	05/28/2026	View ... Create Alert Filing info Download PDF Copy Link
NPORT-P	Monthly Portfolio Investments Report on ...		State Street Bank & Trust CO Fund Admin Dept. /fa	05/28/2026	View ... Create Alert Filing info Download PDF Copy Link
497	Definitive materials filed under paragra...	COLUMBIA ACORN TRUST , COLUMBIA FUNDS SERIES TRUST I , COLUMBIA FUNDS SERIES TRUST , Columbia Funds Series Trust II	DONNELLEY FINANCIAL SOLUTIONS /FA/	05/22/2026	View ... Create Alert Filing info Download PDF Copy Link
497J	Certification of no change in definitive...	Columbia Acorn Trust	DONNELLEY FINANCIAL SOLUTIONS /FA/	05/01/2026	View ... Create Alert Filing info Download PDF Copy Link
497J	Certification of no change in definitive...	Columbia Acorn Trust	DONNELLEY FINANCIAL SOLUTIONS /FA/	05/01/2026	View ... Create Alert Filing info Download PDF Copy Link
497K	Summary Prospectus for certain open-end ...	Columbia Acorn Trust	DONNELLEY FINANCIAL SOLUTIONS /FA/	04/23/2026	View ... Create Alert Filing info Download PDF Copy Link
485BPOS	Post-effective amendment filed pursuant ...	COLUMBIA ACORN TRUST , COLUMBIA ACORN TRUST	DONNELLEY FINANCIAL SOLUTIONS /FA/	04/23/2026	View ... Create Alert Filing info Download PDF Copy Link View XBRL Download CSV
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