ASBAX vs. ANCFX

Last updated Jun 24, 2026

ASBAX (American Funds Short-Term Bond Fund of America) and ANCFX (American Funds Fundamental Investors Class A) are both mutual funds - ASBAX is a Short-Term Bond fund managed by American Funds, while ANCFX is a Large Cap Blend Equities fund actively managed by American Funds. Over the past 10 years, ASBAX returned 1.56%/yr vs 15.19%/yr for ANCFX. At a correlation of -0.12, they often move in opposite directions. ASBAX charges 0.66%/yr vs 0.57%/yr for ANCFX.

Performance

ASBAX vs. ANCFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds Short-Term Bond Fund of America (ASBAX) 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, ASBAX achieves a -0.07% return, which is significantly lower than ANCFX's 14.25% return. Over the past 10 years, ASBAX has underperformed ANCFX with an annualized return of 1.56%, while ANCFX has yielded a comparatively higher 15.19% annualized return.

ASBAX

• 1D: -0.11%
• 1M: -0.01%
• YTD: -0.07%
• 6M: 0.34%
• 1Y: 2.51%
• 3Y*: 4.04%
• 5Y*: 1.57%
• 10Y*: 1.56%

ANCFX

• 1D: -0.55%
• 1M: 1.90%
• YTD: 14.25%
• 6M: 13.93%
• 1Y: 31.50%
• 3Y*: 25.26%
• 5Y*: 14.63%
• 10Y*: 15.19%

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

ASBAX vs. ANCFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ASBAX American Funds Short-Term Bond Fund of America	-0.07%	5.05%	4.31%	3.60%	-4.16%	-0.88%	3.53%	2.81%	1.10%	0.91%
ANCFX American Funds Fundamental Investors Class A	14.25%	24.21%	22.73%	25.86%	-16.66%	22.43%	14.92%	27.07%	-8.13%	22.80%

Correlation

The correlation between ASBAX and ANCFX is 0.25, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.25
Correlation (3Y) Calculated over the trailing 3-year period	0.09
Correlation (5Y) Calculated over the trailing 5-year period	0.10
Correlation (10Y) Calculated over the trailing 10-year period	-0.02
Correlation (All Time) Calculated using the full available price history since Oct 4, 2006	-0.12

The correlation between ASBAX and ANCFX shifts across timeframes, from -0.12 (all time) to 0.25 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

ASBAX vs. ANCFX — Risk / Return Rank

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

ASBAX

ASBAX Risk / Return Rank: 36
ASBAX Sharpe Ratio Rank: 28
ASBAX Sortino Ratio Rank: 40
ASBAX Omega Ratio Rank: 42
ASBAX Calmar Ratio Rank: 35
ASBAX Martin Ratio Rank: 36

ANCFX

ANCFX Risk / Return Rank: 68
ANCFX Sharpe Ratio Rank: 69
ANCFX Sortino Ratio Rank: 61
ANCFX Omega Ratio Rank: 62
ANCFX Calmar Ratio Rank: 69
ANCFX Martin Ratio Rank: 79

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.

ASBAX vs. ANCFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds Short-Term Bond Fund of America (ASBAX) 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.

	ASBAX	ANCFX	Difference
Sharpe ratio: Return per unit of total volatility	1.41	2.23	-0.82
Sortino ratio: Return per unit of downside risk	2.46	3.00	-0.54
Omega ratio: Gain probability vs. loss probability	1.32	1.40	-0.08
Calmar ratio: Return relative to maximum drawdown	2.12	3.05	-0.93
Martin ratio: Return relative to average drawdown	7.41	13.74	-6.32

ASBAX vs. ANCFX - Sharpe Ratio Comparison

The current ASBAX Sharpe Ratio is 1.41, which is lower than the ANCFX Sharpe Ratio of 2.23. The chart below compares the historical Sharpe Ratios of ASBAX 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

ASBAX vs. ANCFX - Drawdown Comparison

The maximum ASBAX drawdown since its inception was -6.29%, smaller than the maximum ANCFX drawdown of -53.29%. Use the drawdown chart below to compare losses from any high point for ASBAX and ANCFX.

Drawdown Indicators

	ASBAX	ANCFX	Difference
Max Drawdown Largest peak-to-trough decline	-6.29%	-53.29%	+47.00%
Max Drawdown (1Y) Largest decline over 1 year	-1.24%	-10.66%	+9.42%
Max Drawdown (3Y) Largest decline over 3 years	-1.24%	-17.97%	+16.73%
Max Drawdown (5Y) Largest decline over 5 years	-6.03%	-25.07%	+19.04%
Max Drawdown (10Y) Largest decline over 10 years	-6.29%	-33.93%	+27.64%
Current Drawdown Current decline from peak	-0.75%	-0.77%	+0.02%
Average Drawdown Average peak-to-trough decline	-0.68%	-7.31%	+6.63%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.35%	2.36%	-2.01%

Volatility

ASBAX vs. ANCFX - Volatility Comparison

The current volatility for American Funds Short-Term Bond Fund of America (ASBAX) is 0.63%, while American Funds Fundamental Investors Class A (ANCFX) has a volatility of 5.61%. This indicates that ASBAX 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

	ASBAX	ANCFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.63%	5.61%	-4.98%
Volatility (6M) Calculated over the trailing 6-month period	1.43%	11.72%	-10.29%
Volatility (1Y) Calculated over the trailing 1-year period	1.87%	14.65%	-12.78%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.24%	16.94%	-14.70%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.84%	17.80%	-15.96%

ASBAX vs. ANCFX - Expense Ratio Comparison

ASBAX has a 0.66% expense ratio, which is higher than ANCFX's 0.57% expense ratio.

Dividends

ASBAX vs. ANCFX - Dividend Comparison

ASBAX's dividend yield for the trailing twelve months is around 3.78%, less than ANCFX's 7.30% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ANCFX American Funds Fundamental Investors Class A	7.30%	8.54%	8.90%	5.80%	4.98%	10.97%	2.61%	6.91%	9.31%	7.28%	4.71%	6.08%
ASBAX American Funds Short-Term Bond Fund of America	3.78%	3.87%	3.99%	2.88%	1.02%	0.42%	2.08%	1.66%	1.70%	1.21%	0.83%	1.21%

Frequently Asked Questions

Can I hold both ASBAX and ANCFX in my portfolio?

ASBAX and ANCFX have a correlation of 0.25, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ASBAX or ANCFX?

ANCFX has higher volatility (5.61%) compared to ASBAX (0.63%). In terms of maximum drawdown, ASBAX dropped -6.29% vs ANCFX's -53.29%.

Which has better risk-adjusted returns?

ANCFX currently has the higher Sharpe Ratio (2.23 vs 1.41), 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.