ABNFX vs. WFBIX
Compare and contrast key facts about American Funds The Bond Fund of America® Class F-2 (ABNFX) and iShares U.S. Aggregate Bond Index Fund (WFBIX).
ABNFX is managed by American Funds. It was launched on Aug 4, 2008. WFBIX is managed by BlackRock. It was launched on Jul 2, 1993.
Performance
ABNFX vs. WFBIX - Performance Comparison
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ABNFX vs. WFBIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
ABNFX American Funds The Bond Fund of America® Class F-2 | -0.55% | 7.42% | 1.42% | 4.29% | -13.08% | -0.88% | 10.86% | 8.08% | 0.15% | 3.48% |
WFBIX iShares U.S. Aggregate Bond Index Fund | -0.24% | 7.16% | 1.43% | 9.65% | -13.03% | -1.79% | 7.40% | 8.72% | -0.08% | 3.39% |
Returns By Period
In the year-to-date period, ABNFX achieves a -0.55% return, which is significantly lower than WFBIX's -0.24% return. Both investments have delivered pretty close results over the past 10 years, with ABNFX having a 1.95% annualized return and WFBIX not far ahead at 2.00%.
ABNFX
- 1D
- 0.27%
- 1M
- -1.74%
- YTD
- -0.55%
- 6M
- 0.27%
- 1Y
- 3.61%
- 3Y*
- 3.18%
- 5Y*
- -0.01%
- 10Y*
- 1.95%
WFBIX
- 1D
- 0.22%
- 1M
- -1.62%
- YTD
- -0.24%
- 6M
- 0.51%
- 1Y
- 3.70%
- 3Y*
- 4.82%
- 5Y*
- 0.96%
- 10Y*
- 2.00%
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ABNFX vs. WFBIX - Expense Ratio Comparison
ABNFX has a 0.35% expense ratio, which is higher than WFBIX's 0.05% expense ratio.
Return for Risk
ABNFX vs. WFBIX — Risk / Return Rank
ABNFX
WFBIX
ABNFX vs. WFBIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Funds The Bond Fund of America® Class F-2 (ABNFX) and iShares U.S. Aggregate Bond Index Fund (WFBIX). 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.
| ABNFX | WFBIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.90 | 0.92 | -0.03 |
Sortino ratioReturn per unit of downside risk | 1.29 | 1.32 | -0.03 |
Omega ratioGain probability vs. loss probability | 1.16 | 1.16 | -0.01 |
Calmar ratioReturn relative to maximum drawdown | 1.52 | 1.60 | -0.09 |
Martin ratioReturn relative to average drawdown | 4.34 | 4.49 | -0.15 |
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
| ABNFX | WFBIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.90 | 0.92 | -0.03 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.00 | 0.15 | -0.15 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.40 | 0.39 | +0.01 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.65 | 0.94 | -0.30 |
Correlation
The correlation between ABNFX and WFBIX is 0.91, 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
ABNFX vs. WFBIX - Dividend Comparison
ABNFX's dividend yield for the trailing twelve months is around 4.01%, more than WFBIX's 3.53% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
ABNFX American Funds The Bond Fund of America® Class F-2 | 4.01% | 4.37% | 4.55% | 3.19% | 2.37% | 2.07% | 5.15% | 3.72% | 2.65% | 2.10% | 2.31% | 2.24% |
WFBIX iShares U.S. Aggregate Bond Index Fund | 3.53% | 3.78% | 3.68% | 6.82% | 2.60% | 2.04% | 2.43% | 2.88% | 2.71% | 2.24% | 2.25% | 2.20% |
Drawdowns
ABNFX vs. WFBIX - Drawdown Comparison
The maximum ABNFX drawdown since its inception was -17.69%, smaller than the maximum WFBIX drawdown of -18.68%. Use the drawdown chart below to compare losses from any high point for ABNFX and WFBIX.
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Drawdown Indicators
| ABNFX | WFBIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -17.69% | -18.68% | +0.99% |
Max Drawdown (1Y)Largest decline over 1 year | -2.94% | -2.80% | -0.14% |
Max Drawdown (5Y)Largest decline over 5 years | -17.65% | -17.84% | +0.19% |
Max Drawdown (10Y)Largest decline over 10 years | -17.69% | -18.68% | +0.99% |
Current DrawdownCurrent decline from peak | -2.65% | -2.15% | -0.50% |
Average DrawdownAverage peak-to-trough decline | -3.30% | -2.27% | -1.03% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.03% | 1.00% | +0.03% |
Volatility
ABNFX vs. WFBIX - Volatility Comparison
American Funds The Bond Fund of America® Class F-2 (ABNFX) and iShares U.S. Aggregate Bond Index Fund (WFBIX) have volatilities of 1.49% and 1.55%, 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
| ABNFX | WFBIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.49% | 1.55% | -0.06% |
Volatility (6M)Calculated over the trailing 6-month period | 2.49% | 2.59% | -0.10% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.39% | 4.42% | -0.03% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.91% | 6.37% | -0.46% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.87% | 5.15% | -0.28% |