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VMCIX vs. VIIIX
Performance
Risk-Adjusted Performance
Dividends
Drawdowns
Volatility

Correlation

The correlation between VMCIX and VIIIX 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.


-0.50.00.51.00.9

Performance

VMCIX vs. VIIIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Mid-Cap Index Fund Institutional Shares (VMCIX) and Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX). The values are adjusted to include any dividend payments, if applicable.

-5.00%0.00%5.00%10.00%15.00%AugustSeptemberOctoberNovemberDecember2025
11.94%
8.44%
VMCIX
VIIIX

Key characteristics

Sharpe Ratio

VMCIX:

1.90

VIIIX:

2.04

Sortino Ratio

VMCIX:

2.58

VIIIX:

2.70

Omega Ratio

VMCIX:

1.33

VIIIX:

1.38

Calmar Ratio

VMCIX:

2.64

VIIIX:

3.14

Martin Ratio

VMCIX:

9.13

VIIIX:

12.53

Ulcer Index

VMCIX:

2.63%

VIIIX:

2.12%

Daily Std Dev

VMCIX:

12.63%

VIIIX:

13.00%

Max Drawdown

VMCIX:

-58.86%

VIIIX:

-55.18%

Current Drawdown

VMCIX:

-2.07%

VIIIX:

-1.58%

Returns By Period

In the year-to-date period, VMCIX achieves a 5.11% return, which is significantly higher than VIIIX's 2.91% return. Over the past 10 years, VMCIX has underperformed VIIIX with an annualized return of 10.14%, while VIIIX has yielded a comparatively higher 12.20% annualized return.


VMCIX

YTD

5.11%

1M

3.94%

6M

11.94%

1Y

22.16%

5Y*

10.29%

10Y*

10.14%

VIIIX

YTD

2.91%

1M

1.01%

6M

8.44%

1Y

24.73%

5Y*

12.33%

10Y*

12.20%

*Annualized

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VMCIX vs. VIIIX - Expense Ratio Comparison

VMCIX has a 0.04% expense ratio, which is higher than VIIIX's 0.02% 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%.


VMCIX
Vanguard Mid-Cap Index Fund Institutional Shares
Expense ratio chart for VMCIX: current value at 0.04% compared with the broader market ranging from 0.00% to 2.12%.0.50%1.00%1.50%2.00%0.04%
Expense ratio chart for VIIIX: current value at 0.02% compared with the broader market ranging from 0.00% to 2.12%.0.50%1.00%1.50%2.00%0.02%

Risk-Adjusted Performance

VMCIX vs. VIIIX — Risk-Adjusted Performance Rank

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

VMCIX
The Risk-Adjusted Performance Rank of VMCIX is 8383
Overall Rank
The Sharpe Ratio Rank of VMCIX is 8484
Sharpe Ratio Rank
The Sortino Ratio Rank of VMCIX is 8484
Sortino Ratio Rank
The Omega Ratio Rank of VMCIX is 8181
Omega Ratio Rank
The Calmar Ratio Rank of VMCIX is 8787
Calmar Ratio Rank
The Martin Ratio Rank of VMCIX is 8181
Martin Ratio Rank

VIIIX
The Risk-Adjusted Performance Rank of VIIIX is 8787
Overall Rank
The Sharpe Ratio Rank of VIIIX is 8787
Sharpe Ratio Rank
The Sortino Ratio Rank of VIIIX is 8585
Sortino Ratio Rank
The Omega Ratio Rank of VIIIX is 8686
Omega Ratio Rank
The Calmar Ratio Rank of VIIIX is 9090
Calmar Ratio Rank
The Martin Ratio Rank of VIIIX is 9090
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.

VMCIX vs. VIIIX - Risk-Adjusted Performance Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Mid-Cap Index Fund Institutional Shares (VMCIX) and Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX). 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 VMCIX, currently valued at 1.90, compared to the broader market-1.000.001.002.003.004.001.902.04
The chart of Sortino ratio for VMCIX, currently valued at 2.58, compared to the broader market0.005.0010.002.582.70
The chart of Omega ratio for VMCIX, currently valued at 1.33, compared to the broader market1.002.003.004.001.331.38
The chart of Calmar ratio for VMCIX, currently valued at 2.64, compared to the broader market0.005.0010.0015.0020.002.643.14
The chart of Martin ratio for VMCIX, currently valued at 9.13, compared to the broader market0.0020.0040.0060.0080.009.1312.53
VMCIX
VIIIX

The current VMCIX Sharpe Ratio is 1.90, which is comparable to the VIIIX Sharpe Ratio of 2.04. The chart below compares the historical Sharpe Ratios of VMCIX and VIIIX, 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 Ratio1.001.502.002.503.003.50AugustSeptemberOctoberNovemberDecember2025
1.90
2.04
VMCIX
VIIIX

Dividends

VMCIX vs. VIIIX - Dividend Comparison

VMCIX's dividend yield for the trailing twelve months is around 1.42%, more than VIIIX's 1.24% yield.


TTM20242023202220212020201920182017201620152014
VMCIX
Vanguard Mid-Cap Index Fund Institutional Shares
1.42%1.49%1.52%1.60%1.12%1.45%1.48%1.83%1.36%1.46%1.48%2.57%
VIIIX
Vanguard Institutional Index Fund Institutional Plus Shares
1.24%1.28%1.49%1.75%1.30%1.60%1.93%2.14%1.84%2.09%2.47%2.46%

Drawdowns

VMCIX vs. VIIIX - Drawdown Comparison

The maximum VMCIX drawdown since its inception was -58.86%, which is greater than VIIIX's maximum drawdown of -55.18%. Use the drawdown chart below to compare losses from any high point for VMCIX and VIIIX. For additional features, visit the drawdowns tool.


-8.00%-6.00%-4.00%-2.00%0.00%AugustSeptemberOctoberNovemberDecember2025
-2.07%
-1.58%
VMCIX
VIIIX

Volatility

VMCIX vs. VIIIX - Volatility Comparison

The current volatility for Vanguard Mid-Cap Index Fund Institutional Shares (VMCIX) is 5.19%, while Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX) has a volatility of 5.47%. This indicates that VMCIX experiences smaller price fluctuations and is considered to be less risky than VIIIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.


2.00%3.00%4.00%5.00%6.00%AugustSeptemberOctoberNovemberDecember2025
5.19%
5.47%
VMCIX
VIIIX
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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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