WMFFX vs. ANCFX

Last updated Apr 1, 2026

Compare and contrast key facts about Washington Mutual Investors Fund Class F-2 (WMFFX) and American Funds Fundamental Investors Class A (ANCFX).

WMFFX is a passively managed fund by American Funds that tracks the performance of the S&P 500. It was launched on Aug 5, 2008. ANCFX is managed by American Funds. It was launched on Jan 8, 1978.

Performance

WMFFX vs. ANCFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Washington Mutual Investors Fund Class F-2 (WMFFX) and American Funds Fundamental Investors Class A (ANCFX). The values are adjusted to include any dividend payments, if applicable.

WMFFX vs. ANCFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
WMFFX Washington Mutual Investors Fund Class F-2	-5.23%	17.42%	19.24%	16.96%	-8.27%	28.71%	7.89%	25.03%	-5.98%	20.23%
ANCFX American Funds Fundamental Investors Class A	-6.13%	24.21%	22.73%	25.86%	-16.66%	22.43%	14.92%	27.07%	-8.13%	22.80%

Returns By Period

In the year-to-date period, WMFFX achieves a -5.23% return, which is significantly higher than ANCFX's -6.13% return. Over the past 10 years, WMFFX has underperformed ANCFX with an annualized return of 11.98%, while ANCFX has yielded a comparatively higher 12.92% annualized return.

WMFFX

• 1D: -0.03%
• 1M: -7.89%
• YTD: -5.23%
• 6M: -3.05%
• 1Y: 10.90%
• 3Y*: 15.34%
• 5Y*: 11.03%
• 10Y*: 11.98%

ANCFX

• 1D: -0.62%
• 1M: -9.88%
• YTD: -6.13%
• 6M: -2.09%
• 1Y: 20.46%
• 3Y*: 19.35%
• 5Y*: 11.57%
• 10Y*: 12.92%

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

WMFFX vs. ANCFX - Expense Ratio Comparison

WMFFX has a 0.37% expense ratio, which is lower than ANCFX's 0.59% expense ratio.

ANCFX

American Funds Fundamental Investors Class A

WMFFX

Washington Mutual Investors Fund Class F-2

Return for Risk

WMFFX vs. ANCFX — Risk / Return Rank

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

WMFFX

WMFFX Risk / Return Rank: 38
WMFFX Sharpe Ratio Rank: 35
WMFFX Sortino Ratio Rank: 38
WMFFX Omega Ratio Rank: 38
WMFFX Calmar Ratio Rank: 37
WMFFX Martin Ratio Rank: 44

ANCFX

ANCFX Risk / Return Rank: 70
ANCFX Sharpe Ratio Rank: 67
ANCFX Sortino Ratio Rank: 72
ANCFX Omega Ratio Rank: 67
ANCFX Calmar Ratio Rank: 71
ANCFX Martin Ratio Rank: 75

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.

WMFFX vs. ANCFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Washington Mutual Investors Fund Class F-2 (WMFFX) 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.

	WMFFX	ANCFX	Difference
Sharpe ratio Return per unit of total volatility	0.77	1.16	-0.38
Sortino ratio Return per unit of downside risk	1.21	1.75	-0.54
Omega ratio Gain probability vs. loss probability	1.18	1.25	-0.07
Calmar ratio Return relative to maximum drawdown	0.98	1.61	-0.63
Martin ratio Return relative to average drawdown	4.45	7.19	-2.74
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WMFFX vs. ANCFX - Sharpe Ratio Comparison

The current WMFFX Sharpe Ratio is 0.77, which is lower than the ANCFX Sharpe Ratio of 1.16. The chart below compares the historical Sharpe Ratios of WMFFX and ANCFX, 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

	WMFFX	ANCFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.77	1.16	-0.38
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.79	0.70	+0.09
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.74	0.73	0.00
Sharpe Ratio (All Time) Calculated using the full available price history	0.57	0.61	-0.04

Correlation

The correlation between WMFFX and ANCFX is 0.95, 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

WMFFX vs. ANCFX - Dividend Comparison

WMFFX's dividend yield for the trailing twelve months is around 10.88%, more than ANCFX's 9.11% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
WMFFX Washington Mutual Investors Fund Class F-2	10.88%	10.28%	10.27%	5.92%	6.53%	6.24%	3.26%	6.33%	4.59%	7.43%	6.56%	6.44%
ANCFX American Funds Fundamental Investors Class A	9.11%	8.54%	8.90%	5.80%	4.98%	10.97%	2.61%	6.91%	9.31%	7.28%	4.71%	6.08%

Drawdowns

WMFFX vs. ANCFX - Drawdown Comparison

The maximum WMFFX drawdown since its inception was -47.21%, smaller than the maximum ANCFX drawdown of -53.29%. Use the drawdown chart below to compare losses from any high point for WMFFX and ANCFX.

Drawdown Indicators

	WMFFX	ANCFX	Difference
Max Drawdown Largest peak-to-trough decline	-47.21%	-53.29%	+6.08%
Max Drawdown (1Y) Largest decline over 1 year	-10.37%	-11.35%	+0.98%
Max Drawdown (5Y) Largest decline over 5 years	-18.53%	-25.07%	+6.54%
Max Drawdown (10Y) Largest decline over 10 years	-34.63%	-33.93%	-0.70%
Current Drawdown Current decline from peak	-8.36%	-10.66%	+2.30%
Average Drawdown Average peak-to-trough decline	-5.40%	-7.34%	+1.94%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.29%	2.54%	-0.25%

Volatility

WMFFX vs. ANCFX - Volatility Comparison

The current volatility for Washington Mutual Investors Fund Class F-2 (WMFFX) is 3.59%, while American Funds Fundamental Investors Class A (ANCFX) has a volatility of 4.98%. This indicates that WMFFX 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

	WMFFX	ANCFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.59%	4.98%	-1.39%
Volatility (6M) Calculated over the trailing 6-month period	7.98%	10.64%	-2.66%
Volatility (1Y) Calculated over the trailing 1-year period	15.19%	17.94%	-2.75%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.10%	16.67%	-2.57%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.32%	17.65%	-1.33%