# Columbia Acorn Fund — new fund registration

COLUMBIA ACORN TRUST registered fund series on Form 485APOS, filed 2010-02-26. Featured series: Columbia Acorn Fund.

## Registration

- Registrant / trust: COLUMBIA ACORN TRUST
- CIK: 0000002110
- Form: 485APOS
- Filed: 2010-02-26
- State of incorporation: MA
- Accession: 0001193125-10-042190
- Reported net assets: $2.2B

## Series & classes (24)

| Series | Class | Ticker | New |
| --- | --- | --- | --- |
| [Columbia Acorn Fund](https://search.stillhousedata.com/fund/S000009184) | Columbia Acorn Fund Class A | LACAX | — |
| [Columbia Acorn Fund](https://search.stillhousedata.com/fund/S000009184) | Columbia Acorn Fund Class B | LACBX | — |
| [Columbia Acorn Fund](https://search.stillhousedata.com/fund/S000009184) | Columbia Acorn Fund Class C | LIACX | — |
| [Columbia Acorn Fund](https://search.stillhousedata.com/fund/S000009184) | Columbia Acorn Fund Class Z | ACRNX | — |
| [Columbia Acorn International](https://search.stillhousedata.com/fund/S000009185) | Columbia Acorn International Class A | LAIAX | — |
| [Columbia Acorn International](https://search.stillhousedata.com/fund/S000009185) | Columbia Acorn International Class B | LIABX | — |
| [Columbia Acorn International](https://search.stillhousedata.com/fund/S000009185) | Columbia Acorn International Class C | LAICX | — |
| [Columbia Acorn International](https://search.stillhousedata.com/fund/S000009185) | Columbia Acorn International Class Z | ACINX | — |
| [Columbia Acorn USA](https://search.stillhousedata.com/fund/S000009186) | Columbia Acorn USA Class A | LAUAX | — |
| [Columbia Acorn USA](https://search.stillhousedata.com/fund/S000009186) | Columbia Acorn USA Class B | LAUBX | — |
| [Columbia Acorn USA](https://search.stillhousedata.com/fund/S000009186) | Columbia Acorn USA Class C | LAUCX | — |
| [Columbia Acorn USA](https://search.stillhousedata.com/fund/S000009186) | Columbia Acorn USA Class Z | AUSAX | — |
| [Columbia Acorn Select](https://search.stillhousedata.com/fund/S000009187) | Columbia Acorn Select Class A | LTFAX | — |
| [Columbia Acorn Select](https://search.stillhousedata.com/fund/S000009187) | Columbia Acorn Select Class B | LTFBX | — |
| [Columbia Acorn Select](https://search.stillhousedata.com/fund/S000009187) | Columbia Acorn Select Class C | LTFCX | — |
| [Columbia Acorn Select](https://search.stillhousedata.com/fund/S000009187) | Columbia Acorn Select Class Z | ACTWX | — |
| [Columbia Acorn International Select](https://search.stillhousedata.com/fund/S000009188) | Columbia Acorn International Select Class A | LAFAX | — |
| [Columbia Acorn International Select](https://search.stillhousedata.com/fund/S000009188) | Columbia Acorn International Select Class B | LFFBX | — |
| [Columbia Acorn International Select](https://search.stillhousedata.com/fund/S000009188) | Columbia Acorn International Select Class C | LFFCX | — |
| [Columbia Acorn International Select](https://search.stillhousedata.com/fund/S000009188) | Columbia Acorn International Select Class Z | ACFFX | — |
| [Columbia Thermostat Fund](https://search.stillhousedata.com/fund/S000009189) | Columbia Thermostat Fund Class A | CTFAX | — |
| [Columbia Thermostat Fund](https://search.stillhousedata.com/fund/S000009189) | Columbia Thermostat Fund Class B | CTFBX | — |
| [Columbia Thermostat Fund](https://search.stillhousedata.com/fund/S000009189) | Columbia Thermostat Fund Class C | CTFDX | — |
| [Columbia Thermostat Fund](https://search.stillhousedata.com/fund/S000009189) | Columbia Thermostat Fund Class Z | COTZX | — |

## Fees (from the effective prospectus)

- 12b-1 fee: 0.25%
- Gross expense ratio: 1.10%
- Management fee: 0.72%
- Net expense ratio: 1.08%
- Other expenses: 0.12%

## Investment objective

Columbia Acorn Fund (the Fund) seeks long-term capital appreciation.

## Advisers

- [Columbia Management Investment Advisers, LLC (Advisor)](https://search.stillhousedata.com/firm/108257)

## Other filings by this registrant (7)

- [485APOS — 2018-02-28](https://search.stillhousedata.com/launch/0001193125-18-064116)
- [485APOS — 2011-06-03 (8 new series)](https://search.stillhousedata.com/launch/0001193125-11-158416)
- [485APOS — 2010-12-09](https://search.stillhousedata.com/launch/0001193125-10-277442)
- [485APOS — 2008-02-29](https://search.stillhousedata.com/launch/0001193125-08-043762)
- [485APOS — 2005-03-01](https://search.stillhousedata.com/launch/0000891804-05-000872)
- [485APOS — 2002-09-20](https://search.stillhousedata.com/launch/0000950135-02-004250)
- [485APOS — 2002-07-03](https://search.stillhousedata.com/launch/0000950135-02-003242)

## More

- [Registrant profile: COLUMBIA ACORN TRUST](https://search.stillhousedata.com/registrant/2110)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/launch/0001193125-10-042190.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.