CAIBX vs. AMECX
CAIBX (American Funds Capital Income Builder Class A) and AMECX (American Funds The Income Fund of America Class A) are both Diversified Portfolio funds from American Funds. Both are actively managed. Over the past 10 years, CAIBX returned 7.92%/yr vs 8.35%/yr for AMECX. Their correlation of 0.91 means they have usually moved in the same direction. CAIBX charges 0.58%/yr vs 0.56%/yr for AMECX.
Performance
CAIBX vs. AMECX - Performance Comparison
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Returns By Period
In the year-to-date period, CAIBX achieves a 10.38% return, which is significantly higher than AMECX's 8.47% return. Over the past 10 years, CAIBX has underperformed AMECX with an annualized return of 7.92%, while AMECX has yielded a comparatively higher 8.35% annualized return.
CAIBX
- 1D
- 0.76%
- 1M
- 1.60%
- 6M
- 6.96%
- YTD
- 10.38%
- 1Y
- 18.83%
- 3Y*
- 14.73%
- 5Y*
- 9.15%
- 10Y*
- 7.92%
- ALL TIME*
- 9.80%
AMECX
- 1D
- 0.25%
- 1M
- 1.23%
- 6M
- 4.62%
- YTD
- 8.47%
- 1Y
- 16.31%
- 3Y*
- 13.17%
- 5Y*
- 8.30%
- 10Y*
- 8.35%
- ALL TIME*
- 7.75%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $0.00 | $0.00 | $0.00 |
CAIBX vs. AMECX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
CAIBX American Funds Capital Income Builder Class A | 10.38% | 20.39% | 10.24% | 8.95% | -7.14% | 14.99% | 3.20% | 17.23% | -7.28% | 13.99% |
AMECX American Funds The Income Fund of America Class A | 8.47% | 17.77% | 10.84% | 6.79% | -6.40% | 17.37% | 4.49% | 18.50% | -5.27% | 12.58% |
Correlation
The correlation between CAIBX and AMECX is 0.93, 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. | 0.93 |
Correlation (3Y) Balances recent behavior with more history. | 0.96 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.97 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.96 |
Correlation (All Time) Calculated using the full available price history since Jul 30, 1987 | 0.91 |
The correlation between CAIBX and AMECX has been stable across timeframes, ranging from 0.91 to 0.97 - a consistent structural relationship.
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Return for Risk
CAIBX vs. AMECX — Risk / Return Rank
CAIBX
AMECX
CAIBX vs. AMECX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Funds Capital Income Builder Class A (CAIBX) and American Funds The Income Fund of America Class A (AMECX). 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.
| CAIBX | AMECX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.10 | ||
| Sortino ratioReturn per unit of downside risk | +0.16 | ||
| Omega ratioGain probability vs. loss probability | 1.41 | 1.37 | +0.03 |
| Calmar ratioReturn relative to maximum drawdown | 2.74 | 2.49 | +0.25 |
| Martin ratioReturn relative to average drawdown | 10.94 | 9.13 | +1.81 |
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Drawdowns
CAIBX vs. AMECX - Drawdown Comparison
The maximum CAIBX drawdown since its inception was -43.68%, roughly equal to the maximum AMECX drawdown of -41.92%. Use the drawdown chart below to compare losses from any high point for CAIBX and AMECX.
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Drawdown Indicators
| CAIBX | AMECX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -43.68% | -41.92% | -1.76% |
Max Drawdown (1Y)Largest decline over 1 year | -6.47% | -6.13% | -0.34% |
Max Drawdown (3Y)Largest decline over 3 years | -8.89% | -8.58% | -0.31% |
Max Drawdown (5Y)Largest decline over 5 years | -17.65% | -15.78% | -1.87% |
Max Drawdown (10Y)Largest decline over 10 years | -25.28% | -26.13% | +0.85% |
Current DrawdownCurrent decline from peak | 0.00% | -0.18% | +0.18% |
Average DrawdownAverage peak-to-trough decline | -3.79% | -4.44% | +0.65% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.62% | 1.67% | -0.05% |
Volatility
CAIBX vs. AMECX - Volatility Comparison
American Funds Capital Income Builder Class A (CAIBX) and American Funds The Income Fund of America Class A (AMECX) have volatilities of 1.97% and 1.99%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| CAIBX | AMECX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.97% | 1.99% | -0.02% |
Volatility (6M)Calculated over the trailing 6-month period | 6.56% | 5.86% | +0.70% |
Volatility (1Y)Calculated over the trailing 1-year period | 8.20% | 7.41% | +0.79% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 9.98% | 9.43% | +0.55% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 10.77% | 10.63% | +0.14% |
CAIBX vs. AMECX - Expense Ratio Comparison
CAIBX has a 0.58% expense ratio, which is higher than AMECX's 0.56% expense ratio.
Dividends
CAIBX vs. AMECX - Dividend Comparison
CAIBX's dividend yield for the trailing twelve months is around 7.11%, less than AMECX's 9.28% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AMECX American Funds The Income Fund of America Class A | 9.28% | 9.94% | 6.38% | 2.93% | 6.98% | 6.67% | 2.80% | 5.01% | 7.48% | 4.26% | 3.09% | 5.09% |
CAIBX American Funds Capital Income Builder Class A | 7.11% | 7.71% | 5.76% | 3.47% | 3.43% | 3.14% | 3.38% | 4.10% | 3.55% | 4.44% | 3.52% | 3.62% |
Frequently Asked Questions
With a correlation of 0.93, CAIBX and AMECX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
AMECX has higher volatility (1.99%) compared to CAIBX (1.97%). In terms of maximum drawdown, CAIBX dropped -43.68% vs AMECX's -41.92%.
CAIBX currently has the higher Sharpe Ratio (2.16 vs 2.06), 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.
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