RWMGX vs. ANCFX

Last updated Aug 5, 2026

RWMGX (American Funds Washington Mutual Investors Fund Class R-6) and ANCFX (American Funds Fundamental Investors Class A) are both Large Cap Blend Equities funds from American Funds. Both are actively managed. Over the past 10 years, RWMGX returned 13.21%/yr vs 14.45%/yr for ANCFX. Their correlation of 0.95 means they have usually moved in the same direction. RWMGX charges 0.26%/yr vs 0.57%/yr for ANCFX.

Performance

RWMGX vs. ANCFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds Washington Mutual Investors Fund Class R-6 (RWMGX) and American Funds Fundamental Investors Class A (ANCFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RWMGX achieves a 9.99% return, which is significantly lower than ANCFX's 14.46% return. Over the past 10 years, RWMGX has underperformed ANCFX with an annualized return of 13.21%, while ANCFX has yielded a comparatively higher 14.45% annualized return.

RWMGX

• 1D: 0.75%
• 1M: 1.77%
• 6M: 8.33%
• YTD: 9.99%
• 1Y: 16.91%
• 3Y*: 18.42%
• 5Y*: 12.89%
• 10Y*: 13.21%
• ALL TIME*: 12.96%

ANCFX

• 1D: 1.11%
• 1M: 1.08%
• 6M: 11.13%
• YTD: 14.46%
• 1Y: 25.04%
• 3Y*: 23.67%
• 5Y*: 14.11%
• 10Y*: 14.45%
• ALL TIME*: 11.26%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
ANCFX American Funds Fundamental Investors Class A	$0.00	$0.00	$0.00
RWMGX American Funds Washington Mutual Investors Fund Class R-6	$0.00	$0.00	$0.00

RWMGX vs. ANCFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RWMGX American Funds Washington Mutual Investors Fund Class R-6	9.99%	17.56%	19.35%	17.58%	-8.17%	28.84%	8.02%	25.78%	-5.91%	20.38%
ANCFX American Funds Fundamental Investors Class A	14.46%	24.21%	22.73%	25.86%	-16.66%	22.43%	14.92%	27.07%	-8.13%	22.80%

Correlation

The correlation between RWMGX and ANCFX is 0.83, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.83
Correlation (3Y) Balances recent behavior with more history.	0.90
Correlation (5Y) Shows whether the relationship held over a longer period.	0.93
Correlation (10Y) Provides a long-term view across more market conditions.	0.93
Correlation (All Time) Calculated using the full available price history since Jan 4, 2010	0.95

The correlation between RWMGX and ANCFX shifts across timeframes, from 0.83 (1 year) to 0.95 (all time), reflecting how their relationship changes across market environments.

Return for Risk

RWMGX vs. ANCFX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

RWMGX

RWMGX Risk / Return Rank: 68
RWMGX Sharpe Ratio Rank: 72
RWMGX Sortino Ratio Rank: 71
RWMGX Omega Ratio Rank: 68
RWMGX Calmar Ratio Rank: 59
RWMGX Martin Ratio Rank: 73

ANCFX

ANCFX Risk / Return Rank: 74
ANCFX Sharpe Ratio Rank: 75
ANCFX Sortino Ratio Rank: 70
ANCFX Omega Ratio Rank: 68
ANCFX Calmar Ratio Rank: 75
ANCFX Martin Ratio Rank: 84

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

RWMGX vs. ANCFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds Washington Mutual Investors Fund Class R-6 (RWMGX) and American Funds Fundamental Investors Class A (ANCFX). 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.

	RWMGX	ANCFX	Difference
Sharpe ratio: Return per unit of total volatility	1.78	1.81	-0.03
Sortino ratio: Return per unit of downside risk	2.54	2.49	+0.04
Omega ratio: Gain probability vs. loss probability	1.32	1.32	0.00
Calmar ratio: Return relative to maximum drawdown	2.23	2.57	-0.33
Martin ratio: Return relative to average drawdown	9.71	11.08	-1.37

RWMGX vs. ANCFX - Sharpe Ratio Comparison

The current RWMGX Sharpe Ratio is 1.78, which is comparable to the ANCFX Sharpe Ratio of 1.81. The chart below compares the historical Sharpe Ratios of RWMGX and ANCFX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

RWMGX vs. ANCFX - Drawdown Comparison

The maximum RWMGX drawdown since its inception was -34.64%, smaller than the maximum ANCFX drawdown of -53.29%. Use the drawdown chart below to compare losses from any high point for RWMGX and ANCFX.

Drawdown Indicators

	RWMGX	ANCFX	Difference
Max Drawdown Largest peak-to-trough decline	-34.64%	-53.29%	+18.65%
Max Drawdown (1Y) Largest decline over 1 year	-8.35%	-10.66%	+2.31%
Max Drawdown (3Y) Largest decline over 3 years	-14.61%	-17.97%	+3.36%
Max Drawdown (5Y) Largest decline over 5 years	-18.46%	-25.07%	+6.61%
Max Drawdown (10Y) Largest decline over 10 years	-34.64%	-33.93%	-0.71%
Current Drawdown Current decline from peak	0.00%	-0.59%	+0.59%
Average Drawdown Average peak-to-trough decline	-3.09%	-7.30%	+4.21%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.92%	2.47%	-0.55%

Volatility

RWMGX vs. ANCFX - Volatility Comparison

The current volatility for American Funds Washington Mutual Investors Fund Class R-6 (RWMGX) is 2.39%, while American Funds Fundamental Investors Class A (ANCFX) has a volatility of 4.40%. This indicates that RWMGX experiences smaller price fluctuations and is considered to be less risky than ANCFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RWMGX	ANCFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.39%	4.40%	-2.01%
Volatility (6M) Calculated over the trailing 6-month period	7.82%	12.14%	-4.32%
Volatility (1Y) Calculated over the trailing 1-year period	10.48%	15.13%	-4.65%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.06%	17.02%	-2.96%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.29%	17.77%	-1.48%

RWMGX vs. ANCFX - Expense Ratio Comparison

RWMGX has a 0.26% expense ratio, which is lower than ANCFX's 0.57% expense ratio.

Dividends

RWMGX vs. ANCFX - Dividend Comparison

RWMGX's dividend yield for the trailing twelve months is around 9.70%, more than ANCFX's 7.28% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ANCFX American Funds Fundamental Investors Class A	7.28%	8.54%	8.90%	5.80%	4.98%	10.97%	2.61%	6.91%	9.31%	7.28%	4.71%	6.08%
RWMGX American Funds Washington Mutual Investors Fund Class R-6	9.70%	10.36%	10.36%	6.42%	6.63%	6.33%	3.35%	6.91%	4.67%	7.52%	6.66%	6.55%

Frequently Asked Questions

Can I hold both RWMGX and ANCFX in my portfolio?

RWMGX and ANCFX have a correlation of 0.83, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RWMGX or ANCFX?

ANCFX has higher volatility (4.40%) compared to RWMGX (2.39%). In terms of maximum drawdown, RWMGX dropped -34.64% vs ANCFX's -53.29%.

Which has better risk-adjusted returns?

ANCFX currently has the higher Sharpe Ratio (1.81 vs 1.78), 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.