WFBIX vs. VTINX
Compare and contrast key facts about iShares U.S. Aggregate Bond Index Fund (WFBIX) and Vanguard Target Retirement Income Fund (VTINX).
WFBIX is managed by BlackRock. It was launched on Jul 2, 1993. VTINX is managed by Vanguard. It was launched on Oct 27, 2003.
Performance
WFBIX vs. VTINX - Performance Comparison
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WFBIX vs. VTINX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
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% |
VTINX Vanguard Target Retirement Income Fund | -0.46% | 11.31% | 6.66% | 10.66% | -12.75% | 5.24% | 10.02% | 13.16% | -1.98% | 7.46% |
Returns By Period
In the year-to-date period, WFBIX achieves a -0.24% return, which is significantly higher than VTINX's -0.46% return. Over the past 10 years, WFBIX has underperformed VTINX with an annualized return of 2.00%, while VTINX has yielded a comparatively higher 4.94% annualized return.
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%
VTINX
- 1D
- 0.96%
- 1M
- -2.70%
- YTD
- -0.46%
- 6M
- 0.80%
- 1Y
- 9.06%
- 3Y*
- 7.86%
- 5Y*
- 3.59%
- 10Y*
- 4.94%
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WFBIX vs. VTINX - Expense Ratio Comparison
WFBIX has a 0.05% expense ratio, which is lower than VTINX's 0.08% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Return for Risk
WFBIX vs. VTINX — Risk / Return Rank
WFBIX
VTINX
WFBIX vs. VTINX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares U.S. Aggregate Bond Index Fund (WFBIX) and Vanguard Target Retirement Income Fund (VTINX). 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.
| WFBIX | VTINX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.92 | 1.67 | -0.75 |
Sortino ratioReturn per unit of downside risk | 1.32 | 2.39 | -1.08 |
Omega ratioGain probability vs. loss probability | 1.16 | 1.34 | -0.17 |
Calmar ratioReturn relative to maximum drawdown | 1.60 | 2.29 | -0.68 |
Martin ratioReturn relative to average drawdown | 4.49 | 9.59 | -5.10 |
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
| WFBIX | VTINX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.92 | 1.67 | -0.75 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.15 | 0.60 | -0.45 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.39 | 0.87 | -0.48 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.94 | 0.90 | +0.05 |
Correlation
The correlation between WFBIX and VTINX is 0.29, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.
Dividends
WFBIX vs. VTINX - Dividend Comparison
WFBIX's dividend yield for the trailing twelve months is around 3.53%, less than VTINX's 5.05% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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% |
VTINX Vanguard Target Retirement Income Fund | 5.05% | 5.02% | 5.89% | 4.01% | 3.08% | 8.63% | 3.42% | 2.62% | 4.19% | 1.56% | 2.27% | 3.53% |
Drawdowns
WFBIX vs. VTINX - Drawdown Comparison
The maximum WFBIX drawdown since its inception was -18.68%, smaller than the maximum VTINX drawdown of -19.96%. Use the drawdown chart below to compare losses from any high point for WFBIX and VTINX.
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Drawdown Indicators
| WFBIX | VTINX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -18.68% | -19.96% | +1.28% |
Max Drawdown (1Y)Largest decline over 1 year | -2.80% | -4.14% | +1.34% |
Max Drawdown (5Y)Largest decline over 5 years | -17.84% | -17.02% | -0.82% |
Max Drawdown (10Y)Largest decline over 10 years | -18.68% | -17.02% | -1.66% |
Current DrawdownCurrent decline from peak | -2.15% | -3.04% | +0.89% |
Average DrawdownAverage peak-to-trough decline | -2.27% | -2.21% | -0.06% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.00% | 0.99% | +0.01% |
Volatility
WFBIX vs. VTINX - Volatility Comparison
The current volatility for iShares U.S. Aggregate Bond Index Fund (WFBIX) is 1.55%, while Vanguard Target Retirement Income Fund (VTINX) has a volatility of 2.50%. This indicates that WFBIX experiences smaller price fluctuations and is considered to be less risky than VTINX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| WFBIX | VTINX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.55% | 2.50% | -0.95% |
Volatility (6M)Calculated over the trailing 6-month period | 2.59% | 3.59% | -1.00% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.42% | 5.60% | -1.18% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.37% | 6.01% | +0.36% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.15% | 5.69% | -0.54% |