AIBAX vs. VBISX
Compare and contrast key facts about American Funds Intermediate Bond Fund of America (AIBAX) and Vanguard Short-Term Bond Index Fund (VBISX).
AIBAX is managed by American Funds. It was launched on Feb 19, 1988. VBISX is managed by Vanguard. It was launched on Mar 1, 1994.
Performance
AIBAX vs. VBISX - Performance Comparison
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AIBAX vs. VBISX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
AIBAX American Funds Intermediate Bond Fund of America | -0.59% | 6.83% | 2.91% | 4.09% | -8.02% | -0.89% | 7.36% | 4.40% | 0.92% | 1.06% |
VBISX Vanguard Short-Term Bond Index Fund | -0.34% | 5.67% | 3.66% | 4.54% | -5.61% | -1.35% | 4.63% | 4.78% | 1.27% | 1.10% |
Returns By Period
In the year-to-date period, AIBAX achieves a -0.59% return, which is significantly lower than VBISX's -0.34% return. Over the past 10 years, AIBAX has underperformed VBISX with an annualized return of 1.65%, while VBISX has yielded a comparatively higher 1.76% annualized return.
AIBAX
- 1D
- 0.32%
- 1M
- -1.72%
- YTD
- -0.59%
- 6M
- 0.60%
- 1Y
- 3.58%
- 3Y*
- 3.58%
- 5Y*
- 0.96%
- 10Y*
- 1.65%
VBISX
- 1D
- 0.20%
- 1M
- -1.25%
- YTD
- -0.34%
- 6M
- 0.83%
- 1Y
- 3.56%
- 3Y*
- 3.85%
- 5Y*
- 1.39%
- 10Y*
- 1.76%
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AIBAX vs. VBISX - Expense Ratio Comparison
AIBAX has a 0.63% expense ratio, which is higher than VBISX's 0.15% expense ratio.
Return for Risk
AIBAX vs. VBISX — Risk / Return Rank
AIBAX
VBISX
AIBAX vs. VBISX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Funds Intermediate Bond Fund of America (AIBAX) and Vanguard Short-Term Bond Index Fund (VBISX). 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.
| AIBAX | VBISX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.22 | 1.64 | -0.42 |
Sortino ratioReturn per unit of downside risk | 1.87 | 2.70 | -0.83 |
Omega ratioGain probability vs. loss probability | 1.23 | 1.33 | -0.10 |
Calmar ratioReturn relative to maximum drawdown | 2.02 | 2.72 | -0.69 |
Martin ratioReturn relative to average drawdown | 6.87 | 9.96 | -3.10 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| AIBAX | VBISX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.22 | 1.64 | -0.42 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.23 | 0.48 | -0.25 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.51 | 0.74 | -0.24 |
Sharpe Ratio (All Time)Calculated using the full available price history | 1.26 | 1.34 | -0.08 |
Correlation
The correlation between AIBAX and VBISX is 0.82, 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
AIBAX vs. VBISX - Dividend Comparison
AIBAX's dividend yield for the trailing twelve months is around 3.54%, which matches VBISX's 3.52% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AIBAX American Funds Intermediate Bond Fund of America | 3.54% | 3.87% | 4.00% | 3.01% | 1.63% | 0.91% | 3.25% | 2.59% | 1.66% | 1.21% | 1.72% | 1.85% |
VBISX Vanguard Short-Term Bond Index Fund | 3.52% | 3.44% | 3.29% | 2.10% | 1.38% | 1.16% | 1.72% | 2.16% | 1.92% | 1.58% | 1.42% | 1.34% |
Drawdowns
AIBAX vs. VBISX - Drawdown Comparison
The maximum AIBAX drawdown since its inception was -11.42%, which is greater than VBISX's maximum drawdown of -8.79%. Use the drawdown chart below to compare losses from any high point for AIBAX and VBISX.
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Drawdown Indicators
| AIBAX | VBISX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -11.42% | -8.79% | -2.63% |
Max Drawdown (1Y)Largest decline over 1 year | -2.18% | -1.54% | -0.64% |
Max Drawdown (5Y)Largest decline over 5 years | -11.33% | -8.72% | -2.61% |
Max Drawdown (10Y)Largest decline over 10 years | -11.42% | -8.79% | -2.63% |
Current DrawdownCurrent decline from peak | -1.72% | -1.25% | -0.47% |
Average DrawdownAverage peak-to-trough decline | -1.19% | -0.87% | -0.32% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.64% | 0.42% | +0.22% |
Volatility
AIBAX vs. VBISX - Volatility Comparison
American Funds Intermediate Bond Fund of America (AIBAX) has a higher volatility of 1.07% compared to Vanguard Short-Term Bond Index Fund (VBISX) at 0.74%. This indicates that AIBAX's price experiences larger fluctuations and is considered to be riskier than VBISX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| AIBAX | VBISX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.07% | 0.74% | +0.33% |
Volatility (6M)Calculated over the trailing 6-month period | 1.75% | 1.50% | +0.25% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.31% | 2.44% | +0.87% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.15% | 2.91% | +1.24% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 3.27% | 2.37% | +0.90% |