# EDGAR Filing Document

**Accession Number:** 0000002110
**File Stem:** 0001145549-23-009152
**Filing Date:** 2023-2
**Character Count:** 9853
**Document Hash:** cacebf5f4161512da906de5fe2ebc3b2
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001145549-23-009152.hdr.sgml**: 20230224

**ACCESSION NUMBER**: 0001145549-23-009152

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20221231

**FILED AS OF DATE**: 20230224

**DATE AS OF CHANGE**: 20230224

**PERIOD START**: 20221231

**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:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-01829
- **FILM NUMBER:** 23663125

**BUSINESS ADDRESS:**
- **STREET 1:** 71 S. WACKER DRIVE, SUITE 2500
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606
- **BUSINESS PHONE:** 3126349200

**MAIL ADDRESS:**
- **STREET 1:** 71 S. WACKER DRIVE, SUITE 2500
- **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

### Columbia Thermostat Fund (Series ID: S000009189)

| Class ID   | Class Name                                     | Ticker Symbol   |
|:---|:---|:---|
| C000024974 | Columbia Thermostat Fund Class A               | CTFAX           |
| C000024976 | Columbia Thermostat Fund Class C               | CTFDX           |
| C000024977 | Columbia Thermostat Fund Institutional Class   | COTZX           |
| C000122749 | Columbia Thermostat Fund Advisor Class         | CTORX           |
| C000122750 | Columbia Thermostat Fund Institutional 2 Class | CQTRX           |
| C000122751 | Columbia Thermostat Fund Institutional 3 Class | CYYYX           |

## Form NPORT-P: Monthly Portfolio Investments Report

### NPORT-P: Part A: General Information

**Item A.1. Information about the Registrant.**

- **a. Name of Registrant:** Columbia Acorn Trust

- **b. Investment Company Act file number:** 811-01829

- **c. CIK number of Registrant:** 0000002110

- **d. LEI of Registrant:** 549300DX0CWIN8VE1908

- **e. Address and telephone number of Registrant.**

  - **Street Address 1:** 71 S Wacker Dr.

  - **City:** Chicago

  - **State:** IL

  - **Foreign country:** US

  - **Zip / Postal Code:** 60606

  - **Telephone number:** 312-634-9200

**Item A.2. Information about the Series.**

- **a. Name of Series:** Columbia Thermostat Fund

- **b. EDGAR series identifier (if any):** S000009189

- **c. LEI of Series:** 549300EN4NJA2NPKY702

**Item A.3. Reporting period.**

- **a. Date of fiscal year-end:** 2022-12-31

- **b. Date as of which information is reported:** 2022-12-31

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $1357888146.99

**Total Liabilities:** $1229258.70

**Net Assets:** $1356658888.29

**Cash Not Reported:** $1070.03

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000024974 | 1.56%                | 3.78%                | -1.36%               |
| Class ID C000024976 | 1.49%                | 3.70%                | -1.38%               |
| Class ID C000024977 | 1.52%                | 3.84%                | -1.33%               |
| Class ID C000122749 | 1.58%                | 3.81%                | -1.32%               |
| Class ID C000122750 | 1.50%                | 3.88%                | -1.34%               |
| Class ID C000122751 | 1.51%                | 3.81%                | -1.30%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-19454836.04            | $39045625.92                               |
| Month 2  | $-6827934.02             | $58075630.86                               |
| Month 3  | $3713577.96              | $-28010122.74                              |

**Designated Index Information**

- **Index Name:** N/A

- **Index Identifier:** N/A

### Schedule of Portfolio Investments

| Name                                             | Title                                            | Identifiers                                   | Payoff Profile   | Asset Category   | Issuer Category   | Country   |   Balance | Units   | Value (USD)   | % of Net Assets   | Maturity Date   | Coupon Type   | Annualized Rate (%)   | Restricted?   |   Fair Value Level | Lending Status   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| COLUMBIA ACORN FUND                              | Columbia Acorn Fund                              | CUSIP: 197199474<br>LEI: 549300X3KJ5X2R54O387 | Long             | EC               | RF                | US        |   2038392 | NS      | $20526610.14  | 1.51%             |  |  |  | No            |                  1 | On Loan: No      |
| COLUMBIA DIVERSIFIED FIXED INCOME ALLOCATION ETF | Columbia Diversified Fixed Income Allocation ETF | CUSIP: 19761L508<br>LEI: 5493000XJTC3ZADRR062 | Long             | EC               | RF                | US        |   6658630 | NS      | $115127712.70 | 8.49%             |  |  |  | No            |                  1 | On Loan: No      |
| COLUMBIA RESEARCH ENHANCED CORE ETF              | Columbia Research Enhanced Core ETF              | CUSIP: 19761L706<br>LEI: 5493007QSD2LFRRLVI83 | Long             | EC               | RF                | US        |    890379 | NS      | $20231102.60  | 1.49%             |  |  |  | No            |                  1 | On Loan: No      |
| COLUMBIA SHORT TERM BOND FUND                    | Columbia Short Term Bond Fund                    | CUSIP: 19765M213<br>LEI: W20PRBDXHB83CYNHX881 | Long             | EC               | RF                | US        |  18364353 | NS      | $171523058.36 | 12.64%            |  |  |  | No            |                  1 | On Loan: No      |
| COLUMBIA LARGE CAP ENHANCED CORE FUND            | Columbia Large Cap Enhanced Core Fund            | CUSIP: 19765M221<br>LEI: N/A                  | Long             | EC               | RF                | US        |   1462528 | NS      | $30435205.20  | 2.24%             |  |  |  | No            |                  1 | On Loan: No      |
| COLUMBIA SELECT MIDCAP VALUE FUND                | Columbia Select Mid Cap Value Fund               | CUSIP: 19765M239<br>LEI: N/A                  | Long             | EC               | RF                | US        |   1729649 | NS      | $20582823.46  | 1.52%             |  |  |  | No            |                  1 | On Loan: No      |
| COLUMBIA SHORT TERM CASH FUND                    | COLUMBIA SHORT TERM CASH FUND                    | CUSIP: 19766H239<br>LEI: N/A                  | Long             | STIV             | CORP              | US        |   3994203 | NS      | $3993005.09   | 0.29%             |  |  |  | No            |                  1 | On Loan: No      |
| COLUMBIA US GOVERNMENT MORTGAGE                  | Columbia Quality Income Fund                     | CUSIP: 19766J581<br>LEI: TJ30X3X4Z9WHP6KG4C22 | Long             | EC               | RF                | US        |  12869618 | NS      | $228950503.26 | 16.88%            |  |  |  | No            |                  1 | On Loan: No      |
| COLUMBIA TRUST CONTRARIAN CORE FD                | Columbia Contrarian Core Fund                    | CUSIP: 19766M709<br>LEI: XDPT7NN16OBIUU173D53 | Long             | EC               | RF                | US        |   1206514 | NS      | $30404160.41  | 2.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Columbia Total Return Bond Fun                   | Columbia Total Return Bond Fun                   | CUSIP: 19766M758<br>LEI: 7TUF7LZJ7F8AC48WIE77 | Long             | EC               | RF                | US        |   3859557 | NS      | $114397277.63 | 8.43%             |  |  |  | No            |                  1 | On Loan: No      |
| COLUMBIA EMERGING MARKETS FUND                   | Columbia Emerging Markets Fund                   | CUSIP: 19766M824<br>LEI: E8K1I56V7B5RA80S0N70 | Long             | EC               | RF                | US        |   1794642 | NS      | $20889633.93  | 1.54%             |  |  |  | No            |                  1 | On Loan: No      |
| COLUMBIA CORPORATE INCOME FUND                   | Columbia Corporate Income Fund                   | CUSIP: 19766M873<br>LEI: DERHCGZF5QUGBK32WQ53 | Long             | EC               | RF                | US        |  13097750 | NS      | $114474335.47 | 8.44%             |  |  |  | No            |                  1 | On Loan: No      |
| COLUMBIA FUNDS SERIES TRUST - CO                 | Columbia Large Cap Index Fund                    | CUSIP: 19766P736<br>LEI: ORPPOX410PHMRVFIOW55 | Long             | EC               | RF                | US        |   1401414 | NS      | $61073642.69  | 4.50%             |  |  |  | No            |                  1 | On Loan: No      |
| D61782                                           | Columbia US Treasury Index Fund                  | CUSIP: 19767A381<br>LEI: Z3NLJ4CB2CLTOYV0LQ23 | Long             | EC               | RF                | US        |  40146468 | NS      | $400661751.44 | 29.53%            |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2023-01-20

**Name of Applicant:** Columbia Acorn Trust

**Signature:** Martha Skinner

**Name of Signer:** Martha Skinner

**Title:** Assistant Treasurer