CAIFX vs. ABNFX

Last updated Jun 4, 2026

CAIFX (American Funds Capital Income Builder Fund Class F-2) and ABNFX (American Funds The Bond Fund of America® Class F-2) are both mutual funds - CAIFX is a Dividend fund actively managed by American Funds, while ABNFX is a Intermediate Core Bond fund managed by American Funds. Over the past 10 years, CAIFX returned 8.17%/yr vs 1.93%/yr for ABNFX. At a 0.02 correlation, their price movements are largely independent. CAIFX charges 0.37%/yr vs 0.35%/yr for ABNFX.

Performance

CAIFX vs. ABNFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds Capital Income Builder Fund Class F-2 (CAIFX) and American Funds The Bond Fund of America® Class F-2 (ABNFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CAIFX achieves a 7.86% return, which is significantly higher than ABNFX's 0.19% return. Over the past 10 years, CAIFX has outperformed ABNFX with an annualized return of 8.17%, while ABNFX has yielded a comparatively lower 1.93% annualized return.

CAIFX

• 1D: 0.57%
• 1M: 2.03%
• YTD: 7.86%
• 6M: 8.66%
• 1Y: 18.75%
• 3Y*: 15.46%
• 5Y*: 8.77%
• 10Y*: 8.17%

ABNFX

• 1D: 0.00%
• 1M: 0.46%
• YTD: 0.19%
• 6M: 0.12%
• 1Y: 5.28%
• 3Y*: 3.92%
• 5Y*: 0.01%
• 10Y*: 1.93%

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

CAIFX vs. ABNFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CAIFX American Funds Capital Income Builder Fund Class F-2	7.86%	20.63%	10.47%	9.21%	-6.95%	15.26%	3.41%	17.49%	-7.10%	14.19%
ABNFX American Funds The Bond Fund of America® Class F-2	0.19%	7.42%	1.42%	4.29%	-13.08%	-0.88%	10.86%	8.08%	0.15%	3.48%

Correlation

The correlation between CAIFX and ABNFX is 0.40, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.40
Correlation (3Y) Calculated over the trailing 3-year period	0.38
Correlation (5Y) Calculated over the trailing 5-year period	0.29
Correlation (10Y) Calculated over the trailing 10-year period	0.14
Correlation (All Time) Calculated using the full available price history since Aug 4, 2008	0.02

Over the past year, CAIFX and ABNFX have become more correlated (0.40) than their long-term average of 0.02, meaning their price movements have been converging.

Return for Risk

CAIFX vs. ABNFX — Risk / Return Rank

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

CAIFX

CAIFX Risk / Return Rank: 62
CAIFX Sharpe Ratio Rank: 65
CAIFX Sortino Ratio Rank: 64
CAIFX Omega Ratio Rank: 64
CAIFX Calmar Ratio Rank: 58
CAIFX Martin Ratio Rank: 58

ABNFX

ABNFX Risk / Return Rank: 21
ABNFX Sharpe Ratio Rank: 22
ABNFX Sortino Ratio Rank: 24
ABNFX Omega Ratio Rank: 21
ABNFX Calmar Ratio Rank: 21
ABNFX Martin Ratio Rank: 19

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.

CAIFX vs. ABNFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds Capital Income Builder Fund Class F-2 (CAIFX) and American Funds The Bond Fund of America® Class F-2 (ABNFX). 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.

	CAIFX	ABNFX	Difference
Sharpe ratio: Return per unit of total volatility	2.37	1.34	+1.03
Sortino ratio: Return per unit of downside risk	3.35	2.04	+1.31
Omega ratio: Gain probability vs. loss probability	1.45	1.24	+0.21
Calmar ratio: Return relative to maximum drawdown	2.92	1.71	+1.21
Martin ratio: Return relative to average drawdown	11.65	5.13	+6.53
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CAIFX vs. ABNFX - Sharpe Ratio Comparison

The current CAIFX Sharpe Ratio is 2.37, which is higher than the ABNFX Sharpe Ratio of 1.34. The chart below compares the historical Sharpe Ratios of CAIFX and ABNFX, 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

	CAIFX	ABNFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.37	1.34	+1.03
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.88	0.00	+0.88
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.75	0.40	+0.36
Sharpe Ratio (All Time) Calculated using the full available price history	0.55	0.65	-0.10

Drawdowns

CAIFX vs. ABNFX - Drawdown Comparison

The maximum CAIFX drawdown since its inception was -36.83%, which is greater than ABNFX's maximum drawdown of -17.69%. Use the drawdown chart below to compare losses from any high point for CAIFX and ABNFX.

Drawdown Indicators

	CAIFX	ABNFX	Difference
Max Drawdown Largest peak-to-trough decline	-36.83%	-17.69%	-19.14%
Max Drawdown (1Y) Largest decline over 1 year	-6.47%	-3.09%	-3.38%
Max Drawdown (3Y) Largest decline over 3 years	-8.88%	-6.12%	-2.76%
Max Drawdown (5Y) Largest decline over 5 years	-17.51%	-17.65%	+0.14%
Max Drawdown (10Y) Largest decline over 10 years	-25.27%	-17.69%	-7.58%
Current Drawdown Current decline from peak	0.00%	-1.92%	+1.92%
Average Drawdown Average peak-to-trough decline	-4.71%	-3.29%	-1.42%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.62%	1.03%	+0.59%

Volatility

CAIFX vs. ABNFX - Volatility Comparison

American Funds Capital Income Builder Fund Class F-2 (CAIFX) has a higher volatility of 2.47% compared to American Funds The Bond Fund of America® Class F-2 (ABNFX) at 1.40%. This indicates that CAIFX's price experiences larger fluctuations and is considered to be riskier than ABNFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CAIFX	ABNFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.47%	1.40%	+1.07%
Volatility (6M) Calculated over the trailing 6-month period	6.41%	2.83%	+3.58%
Volatility (1Y) Calculated over the trailing 1-year period	7.99%	3.95%	+4.04%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	9.98%	5.96%	+4.02%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.88%	4.89%	+5.99%

CAIFX vs. ABNFX - Expense Ratio Comparison

CAIFX has a 0.37% expense ratio, which is higher than ABNFX's 0.35% expense ratio.

Dividends

CAIFX vs. ABNFX - Dividend Comparison

CAIFX's dividend yield for the trailing twelve months is around 7.42%, more than ABNFX's 4.38% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ABNFX American Funds The Bond Fund of America® Class F-2	4.38%	4.37%	4.55%	3.19%	2.37%	2.07%	5.15%	3.72%	2.65%	2.10%	2.31%	2.24%
CAIFX American Funds Capital Income Builder Fund Class F-2	7.42%	7.93%	5.98%	3.69%	3.66%	3.36%	3.60%	4.31%	3.76%	4.63%	3.73%	3.82%

Frequently Asked Questions

Can I hold both CAIFX and ABNFX in my portfolio?

CAIFX and ABNFX have a correlation of 0.40, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CAIFX or ABNFX?

CAIFX has higher volatility (2.47%) compared to ABNFX (1.40%). In terms of maximum drawdown, CAIFX dropped -36.83% vs ABNFX's -17.69%.

Which has better risk-adjusted returns?

CAIFX currently has the higher Sharpe Ratio (2.37 vs 1.34), 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.