ANCFX vs. CWBFX

Last updated Jun 4, 2026

ANCFX (American Funds Fundamental Investors Class A) and CWBFX (American Funds Capital World Bond Fund) are both mutual funds - ANCFX is a Large Cap Blend Equities fund managed by American Funds, while CWBFX is a Global Bonds fund managed by American Funds. Over the past 10 years, ANCFX returned 14.90%/yr vs 0.27%/yr for CWBFX. At a 0.10 correlation, their price movements are largely independent. ANCFX charges 0.59%/yr vs 0.95%/yr for CWBFX.

Performance

ANCFX vs. CWBFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds Fundamental Investors Class A (ANCFX) and American Funds Capital World Bond Fund (CWBFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ANCFX achieves a 15.14% return, which is significantly higher than CWBFX's -0.48% return. Over the past 10 years, ANCFX has outperformed CWBFX with an annualized return of 14.90%, while CWBFX has yielded a comparatively lower 0.27% annualized return.

ANCFX

• 1D: 0.00%
• 1M: 5.89%
• YTD: 15.14%
• 6M: 16.14%
• 1Y: 34.54%
• 3Y*: 26.09%
• 5Y*: 14.91%
• 10Y*: 14.90%

CWBFX

• 1D: 0.12%
• 1M: 0.37%
• YTD: -0.48%
• 6M: -0.30%
• 1Y: 1.53%
• 3Y*: 2.85%
• 5Y*: -2.43%
• 10Y*: 0.27%

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

ANCFX vs. CWBFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ANCFX American Funds Fundamental Investors Class A	15.14%	24.21%	22.73%	25.86%	-16.66%	22.43%	14.92%	27.07%	-8.13%	22.80%
CWBFX American Funds Capital World Bond Fund	-0.48%	7.78%	-3.25%	5.81%	-17.52%	-5.17%	9.91%	7.66%	-1.81%	7.26%

Correlation

The correlation between ANCFX and CWBFX is 0.39, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.39
Correlation (3Y) Calculated over the trailing 3-year period	0.28
Correlation (5Y) Calculated over the trailing 5-year period	0.28
Correlation (10Y) Calculated over the trailing 10-year period	0.18
Correlation (All Time) Calculated using the full available price history since Aug 5, 1987	0.10

Over the past year, ANCFX and CWBFX have become more correlated (0.39) than their long-term average of 0.10, meaning their price movements have been converging.

Return for Risk

ANCFX vs. CWBFX — Risk / Return Rank

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

ANCFX

ANCFX Risk / Return Rank: 75
ANCFX Sharpe Ratio Rank: 79
ANCFX Sortino Ratio Rank: 69
ANCFX Omega Ratio Rank: 69
ANCFX Calmar Ratio Rank: 73
ANCFX Martin Ratio Rank: 82

CWBFX

CWBFX Risk / Return Rank: 4
CWBFX Sharpe Ratio Rank: 4
CWBFX Sortino Ratio Rank: 4
CWBFX Omega Ratio Rank: 4
CWBFX Calmar Ratio Rank: 4
CWBFX Martin Ratio Rank: 4

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.

ANCFX vs. CWBFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds Fundamental Investors Class A (ANCFX) and American Funds Capital World Bond Fund (CWBFX). 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.

	ANCFX	CWBFX	Difference
Sharpe ratio: Return per unit of total volatility	2.58	0.25	+2.33
Sortino ratio: Return per unit of downside risk	3.47	0.39	+3.08
Omega ratio: Gain probability vs. loss probability	1.47	1.05	+0.42
Calmar ratio: Return relative to maximum drawdown	3.33	0.29	+3.04
Martin ratio: Return relative to average drawdown	15.41	0.80	+14.61
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ANCFX vs. CWBFX - Sharpe Ratio Comparison

The current ANCFX Sharpe Ratio is 2.58, which is higher than the CWBFX Sharpe Ratio of 0.25. The chart below compares the historical Sharpe Ratios of ANCFX and CWBFX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	ANCFX	CWBFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.58	0.25	+2.33
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.89	-0.37	+1.26
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.84	0.05	+0.80
Sharpe Ratio (All Time) Calculated using the full available price history	0.64	0.86	-0.22

Drawdowns

ANCFX vs. CWBFX - Drawdown Comparison

The maximum ANCFX drawdown since its inception was -53.29%, which is greater than CWBFX's maximum drawdown of -27.91%. Use the drawdown chart below to compare losses from any high point for ANCFX and CWBFX.

Drawdown Indicators

	ANCFX	CWBFX	Difference
Max Drawdown Largest peak-to-trough decline	-53.29%	-27.91%	-25.38%
Max Drawdown (1Y) Largest decline over 1 year	-10.66%	-4.45%	-6.21%
Max Drawdown (3Y) Largest decline over 3 years	-17.97%	-7.69%	-10.28%
Max Drawdown (5Y) Largest decline over 5 years	-25.07%	-26.34%	+1.27%
Max Drawdown (10Y) Largest decline over 10 years	-33.93%	-27.91%	-6.02%
Current Drawdown Current decline from peak	0.00%	-14.34%	+14.34%
Average Drawdown Average peak-to-trough decline	-7.32%	-4.19%	-3.13%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.30%	1.61%	+0.69%

Volatility

ANCFX vs. CWBFX - Volatility Comparison

American Funds Fundamental Investors Class A (ANCFX) has a higher volatility of 3.68% compared to American Funds Capital World Bond Fund (CWBFX) at 1.81%. This indicates that ANCFX's price experiences larger fluctuations and is considered to be riskier than CWBFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ANCFX	CWBFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.68%	1.81%	+1.87%
Volatility (6M) Calculated over the trailing 6-month period	10.82%	3.77%	+7.05%
Volatility (1Y) Calculated over the trailing 1-year period	13.75%	5.16%	+8.59%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.80%	6.57%	+10.23%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.73%	5.65%	+12.08%

ANCFX vs. CWBFX - Expense Ratio Comparison

ANCFX has a 0.59% expense ratio, which is lower than CWBFX's 0.95% expense ratio.

Dividends

ANCFX vs. CWBFX - Dividend Comparison

ANCFX's dividend yield for the trailing twelve months is around 7.43%, more than CWBFX's 2.78% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ANCFX American Funds Fundamental Investors Class A	7.43%	8.54%	8.90%	5.80%	4.98%	10.97%	2.61%	6.91%	9.31%	7.28%	4.71%	6.08%
CWBFX American Funds Capital World Bond Fund	2.78%	2.68%	3.01%	2.47%	1.99%	2.63%	3.18%	2.26%	1.87%	1.80%	2.05%	0.58%

Frequently Asked Questions

Can I hold both ANCFX and CWBFX in my portfolio?

ANCFX and CWBFX have a correlation of 0.39, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ANCFX or CWBFX?

ANCFX has higher volatility (3.68%) compared to CWBFX (1.81%). In terms of maximum drawdown, ANCFX dropped -53.29% vs CWBFX's -27.91%.

Which has better risk-adjusted returns?

ANCFX currently has the higher Sharpe Ratio (2.58 vs 0.25), 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.