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

Correlation

The correlation between ARGFX and VIIIX is 0.81, 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.


-0.50.00.51.00.8

Performance

ARGFX vs. VIIIX - Performance Comparison

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

200.00%400.00%600.00%800.00%AugustSeptemberOctoberNovemberDecember2025
141.03%
884.18%
ARGFX
VIIIX

Key characteristics

Sharpe Ratio

ARGFX:

0.68

VIIIX:

1.96

Sortino Ratio

ARGFX:

0.99

VIIIX:

2.60

Omega Ratio

ARGFX:

1.14

VIIIX:

1.36

Calmar Ratio

ARGFX:

0.48

VIIIX:

3.01

Martin Ratio

ARGFX:

2.43

VIIIX:

12.00

Ulcer Index

ARGFX:

5.38%

VIIIX:

2.12%

Daily Std Dev

ARGFX:

19.36%

VIIIX:

13.02%

Max Drawdown

ARGFX:

-73.49%

VIIIX:

-55.18%

Current Drawdown

ARGFX:

-17.28%

VIIIX:

-0.72%

Returns By Period

The year-to-date returns for both stocks are quite close, with ARGFX having a 3.87% return and VIIIX slightly lower at 3.81%. Over the past 10 years, ARGFX has underperformed VIIIX with an annualized return of 1.06%, while VIIIX has yielded a comparatively higher 12.58% annualized return.


ARGFX

YTD

3.87%

1M

3.09%

6M

-0.64%

1Y

12.00%

5Y*

3.56%

10Y*

1.06%

VIIIX

YTD

3.81%

1M

0.08%

6M

11.31%

1Y

24.76%

5Y*

13.08%

10Y*

12.58%

*Annualized

Compare stocks, funds, or ETFs

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.


ARGFX vs. VIIIX - Expense Ratio Comparison

ARGFX has a 1.00% expense ratio, which is higher than VIIIX's 0.02% expense ratio.


ARGFX
Ariel Fund
Expense ratio chart for ARGFX: current value at 1.00% compared with the broader market ranging from 0.00% to 2.12%.0.50%1.00%1.50%2.00%1.00%
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

ARGFX vs. VIIIX — Risk-Adjusted Performance Rank

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

ARGFX
The Risk-Adjusted Performance Rank of ARGFX is 3030
Overall Rank
The Sharpe Ratio Rank of ARGFX is 2727
Sharpe Ratio Rank
The Sortino Ratio Rank of ARGFX is 2828
Sortino Ratio Rank
The Omega Ratio Rank of ARGFX is 2929
Omega Ratio Rank
The Calmar Ratio Rank of ARGFX is 3434
Calmar Ratio Rank
The Martin Ratio Rank of ARGFX is 3030
Martin Ratio Rank

VIIIX
The Risk-Adjusted Performance Rank of VIIIX is 8787
Overall Rank
The Sharpe Ratio Rank of VIIIX is 8686
Sharpe Ratio Rank
The Sortino Ratio Rank of VIIIX is 8484
Sortino Ratio Rank
The Omega Ratio Rank of VIIIX is 8585
Omega Ratio Rank
The Calmar Ratio Rank of VIIIX is 8989
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.

ARGFX vs. VIIIX - Risk-Adjusted Performance Comparison

This table presents a comparison of risk-adjusted performance metrics for Ariel Fund (ARGFX) 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 ARGFX, currently valued at 0.68, compared to the broader market-1.000.001.002.003.004.000.681.96
The chart of Sortino ratio for ARGFX, currently valued at 0.99, compared to the broader market0.005.0010.000.992.60
The chart of Omega ratio for ARGFX, currently valued at 1.14, compared to the broader market1.002.003.004.001.141.36
The chart of Calmar ratio for ARGFX, currently valued at 0.48, compared to the broader market0.005.0010.0015.0020.000.483.01
The chart of Martin ratio for ARGFX, currently valued at 2.43, compared to the broader market0.0020.0040.0060.0080.002.4312.00
ARGFX
VIIIX

The current ARGFX Sharpe Ratio is 0.68, which is lower than the VIIIX Sharpe Ratio of 1.96. The chart below compares the historical Sharpe Ratios of ARGFX 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 Ratio0.000.501.001.502.002.503.003.50AugustSeptemberOctoberNovemberDecember2025
0.68
1.96
ARGFX
VIIIX

Dividends

ARGFX vs. VIIIX - Dividend Comparison

ARGFX's dividend yield for the trailing twelve months is around 0.12%, less than VIIIX's 1.23% yield.


TTM20242023202220212020201920182017201620152014
ARGFX
Ariel Fund
0.12%0.12%0.42%0.43%0.04%0.30%0.84%1.07%0.68%0.29%0.69%0.55%
VIIIX
Vanguard Institutional Index Fund Institutional Plus Shares
1.23%1.28%1.49%1.75%1.30%1.60%1.93%2.14%1.84%2.09%2.47%2.46%

Drawdowns

ARGFX vs. VIIIX - Drawdown Comparison

The maximum ARGFX drawdown since its inception was -73.49%, which is greater than VIIIX's maximum drawdown of -55.18%. Use the drawdown chart below to compare losses from any high point for ARGFX and VIIIX. For additional features, visit the drawdowns tool.


-20.00%-15.00%-10.00%-5.00%0.00%AugustSeptemberOctoberNovemberDecember2025
-17.28%
-0.72%
ARGFX
VIIIX

Volatility

ARGFX vs. VIIIX - Volatility Comparison

The current volatility for Ariel Fund (ARGFX) is 3.82%, while Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX) has a volatility of 4.47%. This indicates that ARGFX 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%4.00%6.00%8.00%10.00%AugustSeptemberOctoberNovemberDecember2025
3.82%
4.47%
ARGFX
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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