Columbia Acorn Fund
Data updated: 2026-08-28
C000122735 — Columbia Acorn Fund. United States Mid Cap Blend / Core Equity · $2.77B AUM · 0.83% expense ratio. Holdings, fees, performance and SEC filings.
C000122735 Fund Overview
Columbia Acorn Fund is a US mutual fund managed by Columbia Acorn Trust, categorised as United States Mid Cap Blend / Core Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Columbia Acorn Trust
- Category: United States Mid Cap Blend / Core Equity
- Assets under management: $2.77B
- 1-year return: 32.4%
- SEC CIK: 0000002110
- SEC series ID: S000009184
- Share class ID: C000122735
C000122735 Investment Objective and Strategy
Columbia Acorn Fund describes its objective and strategy as follows, from its latest prospectus filed with the SEC by Columbia Acorn Trust.
Investment objective
Columbia Acorn Fund (the Fund) seeks long-term capital appreciation.
Principal investment strategy
Under normal circumstances, the Fund invests a majority of its net assets in the common stock of small- and mid-sized companies. These companies have market capitalizations in the range of companies in the Russell 2500 Growth Index (the Capitalization Index), which ranged between $4.4 million and $50.2 billion as of March 31, 2026. The market capitalization range and composition of companies in the Capitalization Index are subject to change. The Fund invests the majority of its assets in U.S. companies, but also may invest up to 33% of its total assets in foreign companies in developed markets (for example, Japan, Canada and the United Kingdom) and in emerging markets (for example, China, India and Brazil). The Fund may at times emphasize one or more sectors in selecting its investments, including the health care, industrials, and information technology sectors.
C000122735 Holdings
Top 10 holdings of Columbia Acorn Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Columbia Short Term Cash Fund | 5.54% |
| SPX Technologies Inc | 2.78% |
| VSE Corp | 2.08% |
| GCM Grosvenor Inc | 2.00% |
| SharkNinja Inc | 1.90% |
| Cavco Industries Inc | 1.85% |
| DigitalOcean Holdings Inc | 1.81% |
| Guardant Health Inc | 1.79% |
| Rush Street Interactive Inc | 1.75% |
| Viavi Solutions Inc | 1.72% |
C000122735 Portfolio Allocation
Asset-class allocation of Columbia Acorn Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 94.5% |
| Cash & Equivalents | 5.5% |
C000122735 Performance
Total returns for C000122735 (as of 2026-10-01), from SEC filings.
| Period | Total return |
|---|---|
| 1 year | 32.4% |
| 3 years (annualised) | -1.5% |
| 5 years (annualised) | 6.6% |
C000122735 Risk Information
Risk metrics for C000122735, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 16.2%
C000122735 Costs and Fees
C000122735 costs about $83 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.83%
- Gross expense ratio: 0.90%
- Portfolio turnover: 64%
- Brokerage commissions: 7.11 bps of average net assets (SEC N-CEN)
C000122735 Cashflows
Over the 12 months to 2026-06, Columbia Acorn Fund had net outflows of $381.16M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | −$2.00M |
| 2026-05 | −$30.24M |
| 2026-04 | −$28.44M |
| 2026-03 | −$28.24M |
| 2026-02 | −$23.75M |
| 2026-01 | −$30.87M |
C000122735 Debt Constituents
No individual debt constituents are reported in Columbia Acorn Fund's latest SEC N-PORT filing.
C000122735 Prospectus and SEC Filings
Official Columbia Acorn Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-04-23
- Prospectus (485BPOS) — filed 2025-04-25
- Prospectus supplement (497) — filed 2025-03-03
- Portfolio holdings (N-PORT) — filed 2026-08-28
- Portfolio holdings (N-PORT) — filed 2026-05-28
- Portfolio holdings (N-PORT) — filed 2026-02-26
- Annual census (N-CEN) — filed 2026-03-10
- Annual census (N-CEN) — filed 2025-03-12
Related Funds
Other United States Mid Cap Blend / Core Equity funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.