III vs. VOO

Last updated Jun 24, 2026

III (Information Services Group, Inc.) is a stock, while VOO (Vanguard S&P 500 ETF) is S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, III returned 2.64%/yr vs 15.61%/yr for VOO. At a 0.30 correlation, their price movements are largely independent.

Performance

III vs. VOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Information Services Group, Inc. (III) and Vanguard S&P 500 ETF (VOO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, III achieves a -28.36% return, which is significantly lower than VOO's 8.19% return. Over the past 10 years, III has underperformed VOO with an annualized return of 2.64%, while VOO has yielded a comparatively higher 15.61% annualized return.

III

• 1D: 1.50%
• 1M: -7.83%
• YTD: -28.36%
• 6M: -30.29%
• 1Y: -10.06%
• 3Y*: -6.29%
• 5Y*: -2.44%
• 10Y*: 2.64%

VOO

• 1D: -1.42%
• 1M: -1.34%
• YTD: 8.19%
• 6M: 7.24%
• 1Y: 23.69%
• 3Y*: 20.78%
• 5Y*: 13.13%
• 10Y*: 15.61%

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

III vs. VOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
III Information Services Group, Inc.	-28.36%	79.78%	-25.34%	6.17%	-38.12%	135.39%	29.64%	-40.33%	1.68%	14.56%
VOO Vanguard S&P 500 ETF	8.19%	17.82%	24.98%	26.32%	-18.17%	28.79%	18.32%	31.37%	-4.50%	21.77%

Correlation

The correlation between III and VOO is 0.38, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.38
Correlation (3Y) Calculated over the trailing 3-year period	0.33
Correlation (5Y) Calculated over the trailing 5-year period	0.41
Correlation (10Y) Calculated over the trailing 10-year period	0.35
Correlation (All Time) Calculated using the full available price history since Sep 9, 2010	0.30

The correlation between III and VOO shifts across timeframes, from 0.30 (all time) to 0.41 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

III vs. VOO — Risk / Return Rank

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

III

III Risk / Return Rank: 32
III Sharpe Ratio Rank: 32
III Sortino Ratio Rank: 30
III Omega Ratio Rank: 30
III Calmar Ratio Rank: 34
III Martin Ratio Rank: 33

VOO

VOO Risk / Return Rank: 59
VOO Sharpe Ratio Rank: 59
VOO Sortino Ratio Rank: 56
VOO Omega Ratio Rank: 58
VOO Calmar Ratio Rank: 56
VOO Martin Ratio Rank: 67

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.

III vs. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Information Services Group, Inc. (III) and Vanguard S&P 500 ETF (VOO). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	III	VOO	Difference
Sharpe ratio: Return per unit of total volatility	-0.26	1.91	-2.17
Sortino ratio: Return per unit of downside risk	-0.10	2.60	-2.70
Omega ratio: Gain probability vs. loss probability	0.99	1.35	-0.36
Calmar ratio: Return relative to maximum drawdown	-0.27	2.67	-2.94
Martin ratio: Return relative to average drawdown	-0.52	11.96	-12.48

III vs. VOO - Sharpe Ratio Comparison

The current III Sharpe Ratio is -0.26, which is lower than the VOO Sharpe Ratio of 1.91. The chart below compares the historical Sharpe Ratios of III and VOO, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

III vs. VOO - Drawdown Comparison

The maximum III drawdown since its inception was -88.55%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for III and VOO.

Drawdown Indicators

	III	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-88.55%	-33.99%	-54.56%
Max Drawdown (1Y) Largest decline over 1 year	-37.63%	-8.90%	-28.73%
Max Drawdown (3Y) Largest decline over 3 years	-45.79%	-18.69%	-27.10%
Max Drawdown (5Y) Largest decline over 5 years	-66.71%	-24.52%	-42.19%
Max Drawdown (10Y) Largest decline over 10 years	-69.72%	-33.99%	-35.73%
Current Drawdown Current decline from peak	-49.45%	-3.14%	-46.31%
Average Drawdown Average peak-to-trough decline	-53.05%	-3.68%	-49.37%
Ulcer Index Depth and duration of drawdowns from previous peaks	19.31%	1.99%	+17.32%

Volatility

III vs. VOO - Volatility Comparison

Information Services Group, Inc. (III) has a higher volatility of 8.87% compared to Vanguard S&P 500 ETF (VOO) at 4.83%. This indicates that III's price experiences larger fluctuations and is considered to be riskier than VOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	III	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.87%	4.83%	+4.04%
Volatility (6M) Calculated over the trailing 6-month period	27.24%	9.82%	+17.42%
Volatility (1Y) Calculated over the trailing 1-year period	39.71%	12.46%	+27.25%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	41.14%	16.91%	+24.23%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	45.47%	18.02%	+27.45%

Dividends

III vs. VOO - Dividend Comparison

III's dividend yield for the trailing twelve months is around 4.44%, more than VOO's 1.05% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
III Information Services Group, Inc.	4.44%	3.11%	5.39%	3.72%	3.26%	1.18%	0.00%	0.00%	0.00%	0.00%	0.00%	3.87%
VOO Vanguard S&P 500 ETF	1.05%	1.13%	1.24%	1.46%	1.69%	1.25%	1.54%	1.88%	2.06%	1.78%	2.02%	2.10%

Frequently Asked Questions

Can I hold both III and VOO in my portfolio?

III and VOO have a correlation of 0.38, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, III or VOO?

III has higher volatility (8.87%) compared to VOO (4.83%). In terms of maximum drawdown, III dropped -88.55% vs VOO's -33.99%.

Which has better risk-adjusted returns?

VOO currently has the higher Sharpe Ratio (1.91 vs -0.26), 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.