ACRSX Performance — Columbia Acorn Fund, Class S
Data updated: 2026-08-28
ACRSX returned +21.71% year to date and +32.41% over one year to Jun 2026. Over one year the fund beat its US Mid-Cap Blend category average: $100 grew to $132, against $122 for the category. Volatility over the past 12 months was 18.58% a year. In the 12 months to Jun 2026 the fund lost a net $381.2M, and assets reached $2.77B.
ACRSX Growth of $100
What $100 invested in Columbia Acorn Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Mid-Cap Blend category average over the same months.
| Period | ACRSX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $132 | $122 |
| Since data start (Oct 2024 – Jun 2026) | $131 | $124 |
ACRSX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +21.71% |
| 1 year | +32.41% |
ACRSX Annual Returns
Calendar-year total returns of Columbia Acorn Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +21.71% |
| 2025 | +4.89% |
| 2024 (Oct–Dec) | +2.29% |
ACRSX Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +4.7% | −0.3% | −8.8% | +13.2% | +5.6% | +6.9% | — | — | — | — | — | — |
| 2025 | +2.6% | −8.0% | −8.7% | −0.5% | +6.8% | +5.2% | +2.1% | +2.4% | +2.7% | +3.2% | +1.3% | −3.1% |
| 2024 | — | — | — | — | — | — | — | — | — | +0.1% | +9.6% | −6.8% |
ACRSX Risk
Risk measures from monthly returns over Jul 2025 – Jun 2026.
- 1-year volatility (annualised): 18.58%
- Best month: +13.20% (Apr 2026)
- Worst month: −8.76% (Mar 2026)
ACRSX Fund Flows
Monthly money in and out of Columbia Acorn Fund, from SEC Form N-PORT.
- 12-month net flow: −$381.2M
- 12-month gross sales (incl. reinvestments): $64.8M
- Sales ÷ redemptions: 0.15×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $27.5M | $29.5M | −$2.0M |
| May 2026 | $2.1M | $32.3M | −$30.2M |
| Apr 2026 | $2.4M | $30.9M | −$28.4M |
| Mar 2026 | $3.4M | $31.7M | −$28.2M |
| Feb 2026 | $2.7M | $26.4M | −$23.8M |
| Jan 2026 | $9.0M | $39.8M | −$30.9M |
| Dec 2025 | $2.6M | $58.5M | −$56.0M |
| Nov 2025 | $3.4M | $44.0M | −$40.6M |
| Oct 2025 | $3.5M | $40.6M | −$37.0M |
| Sep 2025 | $2.3M | $34.4M | −$32.1M |
| Aug 2025 | $2.9M | $37.1M | −$34.2M |
| Jul 2025 | $3.0M | $40.8M | −$37.8M |
ACRSX Assets Under Management
Net assets of Columbia Acorn Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $2.77B |
| 2026-03-31 | $2.25B |
| 2025-12-31 | $2.44B |
| 2025-09-30 | $2.54B |
| 2025-06-30 | $2.46B |
| 2025-03-31 | $2.28B |
| 2024-12-31 | $2.73B |
| 2024-09-30 | $2.79B |
| 2024-06-30 | $2.67B |
| 2024-03-31 | $2.94B |
| 2023-12-31 | $2.79B |
| 2023-09-30 | $2.62B |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.