VTINX vs. WFBIX

Last updated Jun 4, 2026

VTINX (Vanguard Target Retirement Income Fund) and WFBIX (iShares U.S. Aggregate Bond Index Fund) are both mutual funds - VTINX is a Diversified Portfolio fund managed by Vanguard, while WFBIX is a Intermediate Core Bond fund managed by BlackRock. Over the past 10 years, VTINX returned 5.33%/yr vs 1.96%/yr for WFBIX. At a 0.30 correlation, their price movements are largely independent. VTINX charges 0.08%/yr vs 0.05%/yr for WFBIX.

Performance

VTINX vs. WFBIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Target Retirement Income Fund (VTINX) and iShares U.S. Aggregate Bond Index Fund (WFBIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VTINX achieves a 4.69% return, which is significantly higher than WFBIX's 0.43% return. Over the past 10 years, VTINX has outperformed WFBIX with an annualized return of 5.33%, while WFBIX has yielded a comparatively lower 1.96% annualized return.

VTINX

• 1D: 0.14%
• 1M: 2.12%
• YTD: 4.69%
• 6M: 4.90%
• 1Y: 12.16%
• 3Y*: 9.49%
• 5Y*: 4.28%
• 10Y*: 5.33%

WFBIX

• 1D: 0.00%
• 1M: 0.45%
• YTD: 0.43%
• 6M: 0.32%
• 1Y: 5.35%
• 3Y*: 5.33%
• 5Y*: 0.99%
• 10Y*: 1.96%

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

VTINX vs. WFBIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VTINX Vanguard Target Retirement Income Fund	4.69%	11.31%	6.66%	10.66%	-12.75%	5.24%	10.02%	13.16%	-1.98%	7.46%
WFBIX iShares U.S. Aggregate Bond Index Fund	0.43%	7.16%	1.43%	9.65%	-13.03%	-1.79%	7.40%	8.72%	-0.08%	3.39%

Correlation

The correlation between VTINX and WFBIX is 0.59, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.59
Correlation (3Y) Calculated over the trailing 3-year period	0.63
Correlation (5Y) Calculated over the trailing 5-year period	0.59
Correlation (10Y) Calculated over the trailing 10-year period	0.41
Correlation (All Time) Calculated using the full available price history since Oct 28, 2003	0.30

Over the past year, VTINX and WFBIX have become more correlated (0.59) than their long-term average of 0.30, meaning their price movements have been converging.

Return for Risk

VTINX vs. WFBIX — Risk / Return Rank

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

VTINX

VTINX Risk / Return Rank: 72
VTINX Sharpe Ratio Rank: 76
VTINX Sortino Ratio Rank: 78
VTINX Omega Ratio Rank: 77
VTINX Calmar Ratio Rank: 60
VTINX Martin Ratio Rank: 68

WFBIX

WFBIX Risk / Return Rank: 22
WFBIX Sharpe Ratio Rank: 22
WFBIX Sortino Ratio Rank: 24
WFBIX Omega Ratio Rank: 22
WFBIX Calmar Ratio Rank: 23
WFBIX Martin Ratio Rank: 20

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.

VTINX vs. WFBIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Target Retirement Income Fund (VTINX) 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.

	VTINX	WFBIX	Difference
Sharpe ratio Return per unit of total volatility	2.52	1.36	+1.16
Sortino ratio Return per unit of downside risk	3.70	2.04	+1.67
Omega ratio Gain probability vs. loss probability	1.50	1.25	+0.26
Calmar ratio Return relative to maximum drawdown	2.97	1.78	+1.19
Martin ratio Return relative to average drawdown	13.09	5.34	+7.75
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VTINX vs. WFBIX - Sharpe Ratio Comparison

The current VTINX Sharpe Ratio is 2.52, which is higher than the WFBIX Sharpe Ratio of 1.36. The chart below compares the historical Sharpe Ratios of VTINX and WFBIX, 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

	VTINX	WFBIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.52	1.36	+1.16
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.71	0.16	+0.55
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.93	0.38	+0.55
Sharpe Ratio (All Time) Calculated using the full available price history	0.93	0.94	-0.01

Drawdowns

VTINX vs. WFBIX - Drawdown Comparison

The maximum VTINX drawdown since its inception was -19.96%, which is greater than WFBIX's maximum drawdown of -18.68%. Use the drawdown chart below to compare losses from any high point for VTINX and WFBIX.

Drawdown Indicators

	VTINX	WFBIX	Difference
Max Drawdown Largest peak-to-trough decline	-19.96%	-18.68%	-1.28%
Max Drawdown (1Y) Largest decline over 1 year	-4.14%	-3.02%	-1.12%
Max Drawdown (3Y) Largest decline over 3 years	-5.26%	-6.09%	+0.83%
Max Drawdown (5Y) Largest decline over 5 years	-17.02%	-17.84%	+0.82%
Max Drawdown (10Y) Largest decline over 10 years	-17.02%	-18.68%	+1.66%
Current Drawdown Current decline from peak	0.00%	-1.50%	+1.50%
Average Drawdown Average peak-to-trough decline	-2.20%	-2.26%	+0.06%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.94%	1.00%	-0.06%

Volatility

VTINX vs. WFBIX - Volatility Comparison

Vanguard Target Retirement Income Fund (VTINX) has a higher volatility of 1.77% compared to iShares U.S. Aggregate Bond Index Fund (WFBIX) at 1.34%. This indicates that VTINX's price experiences larger fluctuations and is considered to be riskier than WFBIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VTINX	WFBIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.77%	1.34%	+0.43%
Volatility (6M) Calculated over the trailing 6-month period	4.02%	2.83%	+1.19%
Volatility (1Y) Calculated over the trailing 1-year period	4.88%	3.97%	+0.91%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.07%	6.40%	-0.33%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.73%	5.17%	+0.56%

VTINX vs. WFBIX - Expense Ratio Comparison

VTINX has a 0.08% expense ratio, which is higher than WFBIX's 0.05% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

VTINX vs. WFBIX - Dividend Comparison

VTINX's dividend yield for the trailing twelve months is around 4.80%, more than WFBIX's 3.91% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
VTINX Vanguard Target Retirement Income Fund	4.80%	5.02%	5.89%	4.01%	3.08%	8.63%	3.42%	2.62%	4.19%	1.56%	2.27%	3.53%
WFBIX iShares U.S. Aggregate Bond Index Fund	3.91%	3.78%	3.68%	6.82%	2.60%	2.04%	2.43%	2.88%	2.71%	2.24%	2.25%	2.20%

Frequently Asked Questions

Can I hold both VTINX and WFBIX in my portfolio?

VTINX and WFBIX have a correlation of 0.59, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VTINX or WFBIX?

VTINX has higher volatility (1.77%) compared to WFBIX (1.34%). In terms of maximum drawdown, VTINX dropped -19.96% vs WFBIX's -18.68%.

Which has better risk-adjusted returns?

VTINX currently has the higher Sharpe Ratio (2.52 vs 1.36), 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.