RFNBX vs. AHMFX
Compare and contrast key facts about American Funds Fundamental Investors Fund Class R2 (RFNBX) and American High-Income Municipal Bond Fund Class F-2 (AHMFX).
RFNBX is an actively managed fund by Capital Group. It was launched on May 21, 2002. AHMFX is an actively managed fund by Capital Group. It was launched on Aug 1, 2008.
Performance
RFNBX vs. AHMFX - Performance Comparison
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RFNBX vs. AHMFX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
RFNBX American Funds Fundamental Investors Fund Class R2 | -3.54% | 23.22% | 21.80% | 24.89% | -17.32% | 21.49% | 12.51% | 26.09% | -8.89% | 21.82% |
AHMFX American High-Income Municipal Bond Fund Class F-2 | 0.11% | 6.03% | 6.45% | 7.04% | -12.44% | 5.49% | 4.61% | 9.12% | 1.80% | 9.09% |
Returns By Period
In the year-to-date period, RFNBX achieves a -3.54% return, which is significantly lower than AHMFX's 0.11% return. Over the past 10 years, RFNBX has outperformed AHMFX with an annualized return of 12.21%, while AHMFX has yielded a comparatively lower 3.45% annualized return.
RFNBX
- 1D
- 2.94%
- 1M
- -7.11%
- YTD
- -3.54%
- 6M
- -0.28%
- 1Y
- 22.29%
- 3Y*
- 19.58%
- 5Y*
- 11.03%
- 10Y*
- 12.21%
AHMFX
- 1D
- 0.26%
- 1M
- -1.30%
- YTD
- 0.11%
- 6M
- 1.75%
- 1Y
- 4.46%
- 3Y*
- 5.65%
- 5Y*
- 1.92%
- 10Y*
- 3.45%
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RFNBX vs. AHMFX - Expense Ratio Comparison
RFNBX has a 1.36% expense ratio, which is higher than AHMFX's 0.42% expense ratio.
Return for Risk
RFNBX vs. AHMFX — Risk / Return Rank
RFNBX
AHMFX
RFNBX vs. AHMFX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Funds Fundamental Investors Fund Class R2 (RFNBX) and American High-Income Municipal Bond Fund Class F-2 (AHMFX). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
| RFNBX | AHMFX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.28 | 0.70 | +0.57 |
Sortino ratioReturn per unit of downside risk | 1.92 | 0.95 | +0.97 |
Omega ratioGain probability vs. loss probability | 1.27 | 1.21 | +0.06 |
Calmar ratioReturn relative to maximum drawdown | 2.04 | 0.86 | +1.18 |
Martin ratioReturn relative to average drawdown | 8.87 | 2.81 | +6.06 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| RFNBX | AHMFX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.28 | 0.70 | +0.57 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.66 | 0.40 | +0.26 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.69 | 0.76 | -0.07 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.56 | 1.52 | -0.96 |
Correlation
The correlation between RFNBX and AHMFX is -0.08. This indicates that the assets' prices tend to move in opposite directions. Negative correlation can be particularly beneficial for diversification and risk management, as one asset may offset the losses of the other during market fluctuations.
Dividends
RFNBX vs. AHMFX - Dividend Comparison
RFNBX's dividend yield for the trailing twelve months is around 8.18%, more than AHMFX's 4.24% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
RFNBX American Funds Fundamental Investors Fund Class R2 | 8.18% | 7.90% | 8.19% | 5.13% | 4.16% | 10.27% | 0.83% | 6.20% | 8.38% | 6.54% | 3.99% | 5.32% |
AHMFX American High-Income Municipal Bond Fund Class F-2 | 4.24% | 5.58% | 4.04% | 2.97% | 2.71% | 3.44% | 3.60% | 3.68% | 3.88% | 4.19% | 3.74% | 4.19% |
Drawdowns
RFNBX vs. AHMFX - Drawdown Comparison
The maximum RFNBX drawdown since its inception was -53.81%, which is greater than AHMFX's maximum drawdown of -17.65%. Use the drawdown chart below to compare losses from any high point for RFNBX and AHMFX.
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Drawdown Indicators
| RFNBX | AHMFX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -53.81% | -17.65% | -36.16% |
Max Drawdown (1Y)Largest decline over 1 year | -11.37% | -5.60% | -5.77% |
Max Drawdown (5Y)Largest decline over 5 years | -25.53% | -17.65% | -7.88% |
Max Drawdown (10Y)Largest decline over 10 years | -33.96% | -17.65% | -16.31% |
Current DrawdownCurrent decline from peak | -8.15% | -2.12% | -6.03% |
Average DrawdownAverage peak-to-trough decline | -7.29% | -2.38% | -4.91% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.61% | 1.71% | +0.90% |
Volatility
RFNBX vs. AHMFX - Volatility Comparison
American Funds Fundamental Investors Fund Class R2 (RFNBX) has a higher volatility of 6.02% compared to American High-Income Municipal Bond Fund Class F-2 (AHMFX) at 1.12%. This indicates that RFNBX's price experiences larger fluctuations and is considered to be riskier than AHMFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| RFNBX | AHMFX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.02% | 1.12% | +4.90% |
Volatility (6M)Calculated over the trailing 6-month period | 11.03% | 1.86% | +9.17% |
Volatility (1Y)Calculated over the trailing 1-year period | 18.15% | 6.38% | +11.77% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 16.73% | 4.82% | +11.91% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 17.68% | 4.53% | +13.15% |