RMFGX vs. VIGAX

Last updated Apr 1, 2026

Compare and contrast key facts about American Mutual Fund Class R-6 (RMFGX) and Vanguard Growth Index Fund Admiral Shares (VIGAX).

RMFGX is an actively managed fund by American Funds. It was launched on Feb 21, 1950. VIGAX is managed by Vanguard. It was launched on Nov 13, 2000.

Performance

RMFGX vs. VIGAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Mutual Fund Class R-6 (RMFGX) and Vanguard Growth Index Fund Admiral Shares (VIGAX). The values are adjusted to include any dividend payments, if applicable.

RMFGX vs. VIGAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RMFGX American Mutual Fund Class R-6	-3.06%	16.43%	15.28%	9.78%	-4.19%	25.28%	5.15%	21.92%	-2.00%	17.86%
VIGAX Vanguard Growth Index Fund Admiral Shares	-13.83%	19.43%	32.67%	46.76%	-33.14%	27.26%	40.18%	37.23%	-3.35%	27.80%

Returns By Period

In the year-to-date period, RMFGX achieves a -3.06% return, which is significantly higher than VIGAX's -13.83% return. Over the past 10 years, RMFGX has underperformed VIGAX with an annualized return of 10.75%, while VIGAX has yielded a comparatively higher 15.56% annualized return.

RMFGX

• 1D: -0.10%
• 1M: -7.89%
• YTD: -3.06%
• 6M: -1.41%
• 1Y: 10.11%
• 3Y*: 12.31%
• 5Y*: 9.70%
• 10Y*: 10.75%

VIGAX

• 1D: -0.57%
• 1M: -8.83%
• YTD: -13.83%
• 6M: -12.31%
• 1Y: 13.72%
• 3Y*: 19.56%
• 5Y*: 10.93%
• 10Y*: 15.56%

*Multi-year figures are annualized to reflect compound growth (CAGR)

RMFGX vs. VIGAX - Expense Ratio Comparison

RMFGX has a 0.27% expense ratio, which is higher than VIGAX's 0.05% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

RMFGX

American Mutual Fund Class R-6

VIGAX

Vanguard Growth Index Fund Admiral Shares

Return for Risk

RMFGX vs. VIGAX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

RMFGX

RMFGX Risk / Return Rank: 38
RMFGX Sharpe Ratio Rank: 37
RMFGX Sortino Ratio Rank: 37
RMFGX Omega Ratio Rank: 39
RMFGX Calmar Ratio Rank: 35
RMFGX Martin Ratio Rank: 40

VIGAX

VIGAX Risk / Return Rank: 26
VIGAX Sharpe Ratio Rank: 26
VIGAX Sortino Ratio Rank: 30
VIGAX Omega Ratio Rank: 29
VIGAX Calmar Ratio Rank: 23
VIGAX Martin Ratio Rank: 22

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

RMFGX vs. VIGAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Mutual Fund Class R-6 (RMFGX) and Vanguard Growth Index Fund Admiral Shares (VIGAX). 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.

	RMFGX	VIGAX	Difference
Sharpe ratio Return per unit of total volatility	0.80	0.61	+0.19
Sortino ratio Return per unit of downside risk	1.20	1.04	+0.16
Omega ratio Gain probability vs. loss probability	1.18	1.15	+0.03
Calmar ratio Return relative to maximum drawdown	0.96	0.66	+0.30
Martin ratio Return relative to average drawdown	4.19	2.37	+1.81
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RMFGX vs. VIGAX - Sharpe Ratio Comparison

The current RMFGX Sharpe Ratio is 0.80, which is higher than the VIGAX Sharpe Ratio of 0.61. The chart below compares the historical Sharpe Ratios of RMFGX and VIGAX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	RMFGX	VIGAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.80	0.61	+0.19
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.78	0.49	+0.29
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.76	0.73	+0.04
Sharpe Ratio (All Time) Calculated using the full available price history	0.79	0.43	+0.36

Correlation

The correlation between RMFGX and VIGAX is 0.82, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

RMFGX vs. VIGAX - Dividend Comparison

RMFGX's dividend yield for the trailing twelve months is around 8.14%, more than VIGAX's 0.46% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RMFGX American Mutual Fund Class R-6	8.14%	7.85%	6.59%	4.06%	5.20%	4.88%	2.30%	4.89%	6.75%	6.23%	4.54%	6.84%
VIGAX Vanguard Growth Index Fund Admiral Shares	0.46%	0.40%	0.46%	0.57%	0.69%	0.47%	0.66%	0.94%	1.31%	1.14%	1.39%	1.31%

Drawdowns

RMFGX vs. VIGAX - Drawdown Comparison

The maximum RMFGX drawdown since its inception was -29.79%, smaller than the maximum VIGAX drawdown of -50.66%. Use the drawdown chart below to compare losses from any high point for RMFGX and VIGAX.

Drawdown Indicators

	RMFGX	VIGAX	Difference
Max Drawdown Largest peak-to-trough decline	-29.79%	-50.66%	+20.87%
Max Drawdown (1Y) Largest decline over 1 year	-10.22%	-16.51%	+6.29%
Max Drawdown (5Y) Largest decline over 5 years	-15.17%	-35.63%	+20.46%
Max Drawdown (10Y) Largest decline over 10 years	-29.79%	-35.63%	+5.84%
Current Drawdown Current decline from peak	-7.89%	-16.51%	+8.62%
Average Drawdown Average peak-to-trough decline	-2.73%	-12.02%	+9.29%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.34%	4.57%	-2.23%

Volatility

RMFGX vs. VIGAX - Volatility Comparison

The current volatility for American Mutual Fund Class R-6 (RMFGX) is 3.36%, while Vanguard Growth Index Fund Admiral Shares (VIGAX) has a volatility of 5.52%. This indicates that RMFGX experiences smaller price fluctuations and is considered to be less risky than VIGAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RMFGX	VIGAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.36%	5.52%	-2.16%
Volatility (6M) Calculated over the trailing 6-month period	7.33%	12.10%	-4.77%
Volatility (1Y) Calculated over the trailing 1-year period	13.82%	22.69%	-8.87%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	12.48%	22.30%	-9.82%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	14.10%	21.49%	-7.39%