VBIMX vs. VBILX

Last updated Apr 2, 2026

Compare and contrast key facts about Vanguard Intermediate-Term Bond Index Fund Institutional Shares (VBIMX) and Vanguard Intermediate-Term Bond Index Fund Admiral Shares (VBILX).

VBIMX is managed by Vanguard. It was launched on Jan 26, 2006. VBILX is managed by Vanguard. It was launched on Nov 12, 2001.

Performance

VBIMX vs. VBILX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Intermediate-Term Bond Index Fund Institutional Shares (VBIMX) and Vanguard Intermediate-Term Bond Index Fund Admiral Shares (VBILX). The values are adjusted to include any dividend payments, if applicable.

VBIMX vs. VBILX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VBIMX Vanguard Intermediate-Term Bond Index Fund Institutional Shares	-0.65%	8.59%	1.55%	5.78%	-13.25%	-2.50%	9.83%	10.22%	-0.13%	3.89%
VBILX Vanguard Intermediate-Term Bond Index Fund Admiral Shares	-0.66%	8.57%	1.54%	6.09%	-13.59%	-2.36%	9.82%	10.20%	-0.15%	3.86%

Returns By Period

The year-to-date returns for both stocks are quite close, with VBIMX having a -0.65% return and VBILX slightly lower at -0.66%. Both investments have delivered pretty close results over the past 10 years, with VBIMX having a 1.98% annualized return and VBILX not far behind at 1.97%.

VBIMX

• 1D: 0.29%
• 1M: -1.88%
• YTD: -0.65%
• 6M: 0.20%
• 1Y: 4.35%
• 3Y*: 3.81%
• 5Y*: 0.43%
• 10Y*: 1.98%

VBILX

• 1D: 0.29%
• 1M: -1.88%
• YTD: -0.66%
• 6M: 0.19%
• 1Y: 4.23%
• 3Y*: 3.90%
• 5Y*: 0.40%
• 10Y*: 1.97%

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

VBIMX vs. VBILX - Expense Ratio Comparison

VBIMX has a 0.05% expense ratio, which is lower than VBILX's 0.07% 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%.

VBILX

Vanguard Intermediate-Term Bond Index Fund Admiral Shares

VBIMX

Vanguard Intermediate-Term Bond Index Fund Institutional Shares

Return for Risk

VBIMX vs. VBILX — Risk / Return Rank

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

VBIMX

VBIMX Risk / Return Rank: 50
VBIMX Sharpe Ratio Rank: 48
VBIMX Sortino Ratio Rank: 49
VBIMX Omega Ratio Rank: 34
VBIMX Calmar Ratio Rank: 66
VBIMX Martin Ratio Rank: 51

VBILX

VBILX Risk / Return Rank: 51
VBILX Sharpe Ratio Rank: 50
VBILX Sortino Ratio Rank: 50
VBILX Omega Ratio Rank: 35
VBILX Calmar Ratio Rank: 67
VBILX Martin Ratio Rank: 53

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.

VBIMX vs. VBILX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Intermediate-Term Bond Index Fund Institutional Shares (VBIMX) and Vanguard Intermediate-Term Bond Index Fund Admiral Shares (VBILX). 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.

	VBIMX	VBILX	Difference
Sharpe ratio Return per unit of total volatility	1.00	1.00	0.00
Sortino ratio Return per unit of downside risk	1.45	1.45	0.00
Omega ratio Gain probability vs. loss probability	1.18	1.18	0.00
Calmar ratio Return relative to maximum drawdown	1.61	1.60	+0.01
Martin ratio Return relative to average drawdown	5.31	5.30	+0.01
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VBIMX vs. VBILX - Sharpe Ratio Comparison

The current VBIMX Sharpe Ratio is 1.00, which is comparable to the VBILX Sharpe Ratio of 1.00. The chart below compares the historical Sharpe Ratios of VBIMX and VBILX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	VBIMX	VBILX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.00	1.00	0.00
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.07	0.06	0.00
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.37	0.37	0.00
Sharpe Ratio (All Time) Calculated using the full available price history	0.67	0.67	0.00

Correlation

The correlation between VBIMX and VBILX is 1.00, 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

VBIMX vs. VBILX - Dividend Comparison

VBIMX's dividend yield for the trailing twelve months is around 3.80%, which matches VBILX's 3.78% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
VBIMX Vanguard Intermediate-Term Bond Index Fund Institutional Shares	3.80%	4.03%	3.82%	2.82%	2.41%	3.23%	2.95%	2.75%	2.89%	2.76%	3.08%	3.12%
VBILX Vanguard Intermediate-Term Bond Index Fund Admiral Shares	3.78%	4.01%	3.80%	3.09%	1.99%	3.39%	2.94%	2.73%	2.87%	2.73%	3.06%	3.09%

Drawdowns

VBIMX vs. VBILX - Drawdown Comparison

The maximum VBIMX drawdown since its inception was -19.07%, roughly equal to the maximum VBILX drawdown of -19.26%. Use the drawdown chart below to compare losses from any high point for VBIMX and VBILX.

Drawdown Indicators

	VBIMX	VBILX	Difference
Max Drawdown Largest peak-to-trough decline	-19.07%	-19.26%	+0.19%
Max Drawdown (1Y) Largest decline over 1 year	-3.18%	-3.18%	0.00%
Max Drawdown (5Y) Largest decline over 5 years	-18.84%	-19.15%	+0.31%
Max Drawdown (10Y) Largest decline over 10 years	-19.07%	-19.26%	+0.19%
Current Drawdown Current decline from peak	-2.43%	-2.43%	0.00%
Average Drawdown Average peak-to-trough decline	-3.33%	-3.16%	-0.17%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.96%	0.96%	0.00%

Volatility

VBIMX vs. VBILX - Volatility Comparison

Vanguard Intermediate-Term Bond Index Fund Institutional Shares (VBIMX) and Vanguard Intermediate-Term Bond Index Fund Admiral Shares (VBILX) have volatilities of 1.62% and 1.62%, 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.

Volatility by Period

	VBIMX	VBILX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.62%	1.62%	0.00%
Volatility (6M) Calculated over the trailing 6-month period	2.75%	2.75%	0.00%
Volatility (1Y) Calculated over the trailing 1-year period	4.61%	4.59%	+0.02%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.36%	6.36%	0.00%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.37%	5.35%	+0.02%