MFAAX vs. RGAGX
MFAAX (American Funds Mortgage Fund) and RGAGX (American Funds The Growth Fund of America Class R-6) are both mutual funds - MFAAX is a Government Bonds fund managed by American Funds, while RGAGX is a Large Cap Growth Equities fund actively managed by American Funds. Over the past 10 years, MFAAX returned 1.13%/yr vs 16.70%/yr for RGAGX. At a correlation of -0.06, they often move in opposite directions. MFAAX charges 0.64%/yr vs 0.30%/yr for RGAGX.
Performance
MFAAX vs. RGAGX - Performance Comparison
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Returns By Period
In the year-to-date period, MFAAX achieves a -0.70% return, which is significantly lower than RGAGX's 8.89% return. Over the past 10 years, MFAAX has underperformed RGAGX with an annualized return of 1.13%, while RGAGX has yielded a comparatively higher 16.70% annualized return.
MFAAX
- 1D
- -0.34%
- 1M
- 0.45%
- YTD
- -0.70%
- 6M
- -0.24%
- 1Y
- 3.87%
- 3Y*
- 3.38%
- 5Y*
- -0.03%
- 10Y*
- 1.13%
RGAGX
- 1D
- -0.52%
- 1M
- 1.99%
- YTD
- 8.89%
- 6M
- 7.98%
- 1Y
- 23.17%
- 3Y*
- 24.32%
- 5Y*
- 11.82%
- 10Y*
- 16.70%
MFAAX vs. RGAGX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MFAAX American Funds Mortgage Fund | -0.70% | 8.46% | 0.55% | 2.87% | -10.52% | -0.64% | 6.59% | 4.70% | 0.49% | 1.35% |
RGAGX American Funds The Growth Fund of America Class R-6 | 8.89% | 20.08% | 28.41% | 37.66% | -30.53% | 19.67% | 38.30% | 29.22% | -2.88% | 26.53% |
Correlation
The correlation between MFAAX and RGAGX is 0.30, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.30 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.18 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.15 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.03 |
Correlation (All Time) Calculated using the full available price history since Nov 3, 2010 | -0.06 |
The correlation between MFAAX and RGAGX shifts across timeframes, from -0.06 (all time) to 0.30 (1 year), reflecting how their relationship changes across market environments.
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Return for Risk
MFAAX vs. RGAGX — Risk / Return Rank
MFAAX
RGAGX
MFAAX vs. RGAGX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Funds Mortgage Fund (MFAAX) and American Funds The Growth Fund of America Class R-6 (RGAGX). 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.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| MFAAX | RGAGX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.46 | ||
| Sortino ratioReturn per unit of downside risk | -0.47 | ||
| Omega ratioGain probability vs. loss probability | 1.19 | 1.27 | -0.09 |
| Calmar ratioReturn relative to maximum drawdown | 1.28 | 1.79 | -0.51 |
| Martin ratioReturn relative to average drawdown | 3.83 | 6.83 | -3.01 |
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Drawdowns
MFAAX vs. RGAGX - Drawdown Comparison
The maximum MFAAX drawdown since its inception was -16.60%, smaller than the maximum RGAGX drawdown of -36.19%. Use the drawdown chart below to compare losses from any high point for MFAAX and RGAGX.
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Drawdown Indicators
| MFAAX | RGAGX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -16.60% | -36.19% | +19.59% |
Max Drawdown (1Y)Largest decline over 1 year | -3.33% | -13.71% | +10.38% |
Max Drawdown (3Y)Largest decline over 3 years | -7.40% | -21.54% | +14.14% |
Max Drawdown (5Y)Largest decline over 5 years | -16.60% | -36.19% | +19.59% |
Max Drawdown (10Y)Largest decline over 10 years | -16.60% | -36.19% | +19.59% |
Current DrawdownCurrent decline from peak | -2.23% | -1.55% | -0.68% |
Average DrawdownAverage peak-to-trough decline | -2.62% | -5.48% | +2.86% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.11% | 3.57% | -2.46% |
Volatility
MFAAX vs. RGAGX - Volatility Comparison
The current volatility for American Funds Mortgage Fund (MFAAX) is 1.25%, while American Funds The Growth Fund of America Class R-6 (RGAGX) has a volatility of 6.79%. This indicates that MFAAX experiences smaller price fluctuations and is considered to be less risky than RGAGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MFAAX | RGAGX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.25% | 6.79% | -5.54% |
Volatility (6M)Calculated over the trailing 6-month period | 3.06% | 13.01% | -9.95% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.09% | 16.30% | -12.21% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.41% | 20.43% | -14.02% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.84% | 19.78% | -14.94% |
MFAAX vs. RGAGX - Expense Ratio Comparison
MFAAX has a 0.64% expense ratio, which is higher than RGAGX's 0.30% expense ratio.
Dividends
MFAAX vs. RGAGX - Dividend Comparison
MFAAX's dividend yield for the trailing twelve months is around 4.20%, less than RGAGX's 10.09% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MFAAX American Funds Mortgage Fund | 4.20% | 4.18% | 4.49% | 3.24% | 1.36% | 0.33% | 4.38% | 2.90% | 1.77% | 1.65% | 2.34% | 2.44% |
RGAGX American Funds The Growth Fund of America Class R-6 | 10.09% | 10.99% | 9.29% | 7.70% | 4.44% | 8.49% | 4.57% | 7.93% | 12.36% | 7.34% | 6.95% | 9.22% |
Frequently Asked Questions
MFAAX and RGAGX have a correlation of 0.30, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
RGAGX has higher volatility (6.79%) compared to MFAAX (1.25%). In terms of maximum drawdown, MFAAX dropped -16.60% vs RGAGX's -36.19%.
RGAGX currently has the higher Sharpe Ratio (1.50 vs 1.04), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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