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VBISX vs. VBIRX
Performance
Risk-Adjusted Performance
Dividends
Drawdowns
Volatility

Correlation

The correlation between VBISX and VBIRX is 0.99, 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.


-0.50.00.51.01.0

Performance

VBISX vs. VBIRX - Performance Comparison

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

0.00%0.50%1.00%1.50%2.00%2.50%AugustSeptemberOctoberNovemberDecember2025
1.45%
1.48%
VBISX
VBIRX

Key characteristics

Sharpe Ratio

VBISX:

1.20

VBIRX:

1.22

Sortino Ratio

VBISX:

1.80

VBIRX:

1.85

Omega Ratio

VBISX:

1.23

VBIRX:

1.23

Calmar Ratio

VBISX:

0.92

VBIRX:

0.99

Martin Ratio

VBISX:

4.18

VBIRX:

4.47

Ulcer Index

VBISX:

0.78%

VBIRX:

0.74%

Daily Std Dev

VBISX:

2.72%

VBIRX:

2.73%

Max Drawdown

VBISX:

-8.98%

VBIRX:

-8.91%

Current Drawdown

VBISX:

-1.26%

VBIRX:

-1.25%

Returns By Period

As of year-to-date, both investments have demonstrated similar returns, with VBISX at -0.39% and VBIRX at -0.39%. Over the past 10 years, VBISX has underperformed VBIRX with an annualized return of 1.38%, while VBIRX has yielded a comparatively higher 1.45% annualized return.


VBISX

YTD

-0.39%

1M

-0.29%

6M

1.44%

1Y

3.05%

5Y*

1.01%

10Y*

1.38%

VBIRX

YTD

-0.39%

1M

-0.59%

6M

1.48%

1Y

3.12%

5Y*

1.08%

10Y*

1.45%

*Annualized

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VBISX vs. VBIRX - Expense Ratio Comparison

VBISX has a 0.15% expense ratio, which is higher than VBIRX's 0.07% 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%.


VBISX
Vanguard Short-Term Bond Index Fund
Expense ratio chart for VBISX: current value at 0.15% compared with the broader market ranging from 0.00% to 2.12%.0.50%1.00%1.50%2.00%0.15%
Expense ratio chart for VBIRX: current value at 0.07% compared with the broader market ranging from 0.00% to 2.12%.0.50%1.00%1.50%2.00%0.07%

Risk-Adjusted Performance

VBISX vs. VBIRX — Risk-Adjusted Performance Rank

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

VBISX
The Risk-Adjusted Performance Rank of VBISX is 7272
Overall Rank
The Sharpe Ratio Rank of VBISX is 7474
Sharpe Ratio Rank
The Sortino Ratio Rank of VBISX is 7878
Sortino Ratio Rank
The Omega Ratio Rank of VBISX is 7676
Omega Ratio Rank
The Calmar Ratio Rank of VBISX is 7171
Calmar Ratio Rank
The Martin Ratio Rank of VBISX is 6363
Martin Ratio Rank

VBIRX
The Risk-Adjusted Performance Rank of VBIRX is 7474
Overall Rank
The Sharpe Ratio Rank of VBIRX is 7575
Sharpe Ratio Rank
The Sortino Ratio Rank of VBIRX is 8080
Sortino Ratio Rank
The Omega Ratio Rank of VBIRX is 7777
Omega Ratio Rank
The Calmar Ratio Rank of VBIRX is 7373
Calmar Ratio Rank
The Martin Ratio Rank of VBIRX is 6565
Martin Ratio Rank
The risk-adjusted ranks indicate the investment's position relative to the market. A rank closer to 100 signifies top-performing investments, while a rank closer to 0 might suggest underperformance, based on the selected ratio. The values are calculated based on the past 12 months of returns.

VBISX vs. VBIRX - Risk-Adjusted Performance Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Short-Term Bond Index Fund (VBISX) and Vanguard Short-Term Bond Index Fund Admiral Shares (VBIRX). 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.


Sharpe ratio
The chart of Sharpe ratio for VBISX, currently valued at 1.20, compared to the broader market-1.000.001.002.003.004.001.201.22
The chart of Sortino ratio for VBISX, currently valued at 1.80, compared to the broader market0.002.004.006.008.0010.001.801.85
The chart of Omega ratio for VBISX, currently valued at 1.23, compared to the broader market1.002.003.001.231.23
The chart of Calmar ratio for VBISX, currently valued at 0.92, compared to the broader market0.005.0010.0015.000.920.99
The chart of Martin ratio for VBISX, currently valued at 4.18, compared to the broader market0.0020.0040.0060.004.184.47
VBISX
VBIRX

The current VBISX Sharpe Ratio is 1.20, which is comparable to the VBIRX Sharpe Ratio of 1.22. The chart below compares the historical Sharpe Ratios of VBISX and VBIRX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.


Rolling 12-month Sharpe Ratio1.001.502.002.503.00AugustSeptemberOctoberNovemberDecember2025
1.20
1.22
VBISX
VBIRX

Dividends

VBISX vs. VBIRX - Dividend Comparison

VBISX's dividend yield for the trailing twelve months is around 3.30%, less than VBIRX's 3.37% yield.


TTM20242023202220212020201920182017201620152014
VBISX
Vanguard Short-Term Bond Index Fund
3.30%3.29%2.34%1.37%1.10%1.72%2.16%1.93%1.58%1.41%1.25%1.12%
VBIRX
Vanguard Short-Term Bond Index Fund Admiral Shares
3.37%3.36%2.41%1.44%1.17%1.78%2.23%2.04%1.53%1.48%1.32%1.20%

Drawdowns

VBISX vs. VBIRX - Drawdown Comparison

The maximum VBISX drawdown since its inception was -8.98%, roughly equal to the maximum VBIRX drawdown of -8.91%. Use the drawdown chart below to compare losses from any high point for VBISX and VBIRX. For additional features, visit the drawdowns tool.


-1.50%-1.00%-0.50%0.00%AugustSeptemberOctoberNovemberDecember2025
-1.26%
-1.25%
VBISX
VBIRX

Volatility

VBISX vs. VBIRX - Volatility Comparison

Vanguard Short-Term Bond Index Fund (VBISX) has a higher volatility of 0.67% compared to Vanguard Short-Term Bond Index Fund Admiral Shares (VBIRX) at 0.54%. This indicates that VBISX's price experiences larger fluctuations and is considered to be riskier than VBIRX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.


0.50%0.60%0.70%0.80%0.90%1.00%1.10%AugustSeptemberOctoberNovemberDecember2025
0.67%
0.54%
VBISX
VBIRX
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Disclaimer

The information contained herein does not constitute investment advice and made available for educational purposes only. Prices and returns on equities are listed without consideration of fees, commissions, taxes, penalties, or interest payable due to purchasing, holding, or selling.

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