CFNFX Performance — American Funds Fundamental Investors, Class 529-F-1
Data updated: 2026-08-27
CFNFX returned +14.95% year to date and +36.23% over one year to May 2026. Over one year the fund beat its US Large Blend category average: $100 grew to $136, against $122 for the category. Volatility over the past 12 months was 15.87% a year. In the 12 months to Jun 2026 the fund took in a net $1.3B, and assets reached $181.27B.
CFNFX Growth of $100
What $100 invested in American Funds Fundamental Investors grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Large Blend category average over the same months.
| Period | CFNFX | Category average |
|---|---|---|
| 1 year (Jun 2025 – May 2026) | $136 | $122 |
| 3 years (Jun 2023 – May 2026) | $206 | $165 |
| 5 years (Jun 2021 – May 2026) | $201 | $164 |
| Since data start (Jul 2019 – May 2026) | $291 | $228 |
CFNFX Trailing Returns
Total returns to May 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +14.95% |
| 1 year | +36.23% |
3- and 5-year figures withheld: disagrees with sibling classes.
CFNFX Annual Returns
Calendar-year total returns of American Funds Fundamental Investors, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–May) | +14.95% |
| 2025 | +24.44% |
| 2024 | +23.19% |
| 2023 | +26.04% |
| 2022 | −16.56% |
| 2021 | +22.68% |
| 2020 | +15.17% |
| 2019 (Jul–Dec) | +10.97% |
CFNFX 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 | +3.9% | +0.3% | −7.2% | +12.1% | +6.0% | — | — | — | — | — | — | — |
| 2025 | +4.3% | −2.3% | −5.0% | +0.7% | +7.7% | +6.5% | +1.8% | +1.0% | +3.7% | +2.5% | +1.5% | +0.4% |
| 2024 | +1.1% | +5.8% | +4.2% | −3.7% | +3.9% | +2.9% | +1.3% | +1.9% | +2.3% | −0.4% | +4.0% | −1.9% |
| 2023 | +6.6% | −2.7% | +2.2% | +1.8% | −0.2% | +6.2% | +3.7% | −1.7% | −4.6% | −2.0% | +9.2% | +5.9% |
| 2022 | −5.7% | −2.1% | +2.1% | −8.1% | +1.3% | −9.5% | +7.5% | −3.4% | −8.8% | +8.1% | +7.2% | −4.3% |
| 2021 | −1.1% | +3.9% | +3.5% | +4.3% | +1.8% | +1.1% | +1.2% | +2.4% | −4.6% | +5.9% | −2.4% | +5.2% |
| 2020 | −1.1% | −6.9% | −14.0% | +11.8% | +4.4% | +2.2% | +4.6% | +5.7% | −3.2% | −2.4% | +11.7% | +4.7% |
| 2019 | — | — | — | — | — | — | +0.8% | −2.1% | +1.3% | +3.1% | +4.3% | +3.3% |
CFNFX Risk
Risk measures from monthly returns over Jun 2025 – May 2026.
- 1-year volatility (annualised): 15.87%
- Best month: +12.12% (Apr 2026)
- Worst month: −7.21% (Mar 2026)
CFNFX Fund Flows
Monthly money in and out of American Funds Fundamental Investors, from SEC Form N-PORT.
- 12-month net flow: $1.3B
- 12-month gross sales (incl. reinvestments): $26.7B
- Sales ÷ redemptions: 1.05×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $4.1B | $2.2B | $1.8B |
| May 2026 | $1.0B | $2.1B | −$1.1B |
| Apr 2026 | $3.3B | $2.6B | $766.7M |
| Mar 2026 | $1.3B | $1.7B | −$350.6M |
| Feb 2026 | $987.9M | $1.5B | −$503.2M |
| Jan 2026 | $1.1B | $2.5B | −$1.5B |
| Dec 2025 | $10.1B | $3.6B | $6.4B |
| Nov 2025 | $806.7M | $1.6B | −$816.5M |
| Oct 2025 | $935.4M | $2.2B | −$1.2B |
| Sep 2025 | $1.2B | $1.9B | −$760.1M |
| Aug 2025 | $1.0B | $1.6B | −$581.6M |
| Jul 2025 | $877.5M | $1.8B | −$897.4M |
CFNFX Assets Under Management
Net assets of American Funds Fundamental Investors by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $181.27B |
| 2026-03-31 | $153.97B |
| 2025-12-31 | $161.87B |
| 2025-09-30 | $159.70B |
| 2025-06-30 | $152.29B |
| 2025-03-31 | $134.40B |
| 2024-12-31 | $140.86B |
| 2024-09-30 | $141.89B |
| 2024-06-30 | $136.03B |
| 2024-03-31 | $137.05B |
| 2023-12-31 | $125.10B |
| 2023-09-30 | $112.18B |
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.