VIOO vs. EES

Last updated Jun 4, 2026

VIOO (Vanguard S&P Small-Cap 600 ETF) and EES (WisdomTree U.S. SmallCap Fund) are both Small Cap Blend Equities funds - VIOO tracks the S&P SmallCap 600 Index while EES tracks the WisdomTree U.S. Small Cap Index. Both are passively managed. Over the past 10 years, VIOO returned 10.67%/yr vs 10.68%/yr for EES. Their correlation of 0.94 suggests significant overlap in exposure. VIOO charges 0.10%/yr vs 0.38%/yr for EES.

Performance

VIOO vs. EES - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard S&P Small-Cap 600 ETF (VIOO) and WisdomTree U.S. SmallCap Fund (EES). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VIOO achieves a 15.34% return, which is significantly higher than EES's 12.00% return. Both investments have delivered pretty close results over the past 10 years, with VIOO having a 10.67% annualized return and EES not far ahead at 10.68%.

VIOO

• 1D: -0.88%
• 1M: 1.64%
• YTD: 15.34%
• 6M: 14.20%
• 1Y: 31.68%
• 3Y*: 14.40%
• 5Y*: 5.66%
• 10Y*: 10.67%

EES

• 1D: -1.53%
• 1M: 0.47%
• YTD: 12.00%
• 6M: 11.97%
• 1Y: 29.80%
• 3Y*: 15.30%
• 5Y*: 6.23%
• 10Y*: 10.68%

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

VIOO vs. EES - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VIOO Vanguard S&P Small-Cap 600 ETF	15.34%	6.04%	8.48%	16.16%	-16.26%	26.79%	11.47%	22.68%	-8.65%	13.16%
EES WisdomTree U.S. SmallCap Fund	12.00%	6.99%	9.86%	18.53%	-16.18%	34.39%	3.06%	21.68%	-10.12%	12.42%

Correlation

The correlation between VIOO and EES is 0.95, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.95
Correlation (3Y) Calculated over the trailing 3-year period	0.96
Correlation (5Y) Calculated over the trailing 5-year period	0.97
Correlation (10Y) Calculated over the trailing 10-year period	0.97
Correlation (All Time) Calculated using the full available price history since Sep 10, 2010	0.94

The correlation between VIOO and EES has been stable across timeframes, ranging from 0.94 to 0.97 - a consistent structural relationship.

VIOO vs. EES - Sectors Allocation Comparison

Sectors	VIOO	EES
Financial Services	16.9%	21.8%
Industrials	15.5%	12.5%
Technology	15.5%	14.2%
Consumer Cyclical	13.4%	13.4%
Healthcare	11.0%	10.3%
Real Estate	7.7%	4.8%
Energy	5.9%	7.9%
Basic Materials	5.1%	4.9%
Communication Services	3.6%	3.1%
Consumer Defensive	3.5%	5.3%
Utilities	2.0%	1.7%

Return for Risk

VIOO vs. EES — Risk / Return Rank

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

VIOO

VIOO Risk / Return Rank: 58
VIOO Sharpe Ratio Rank: 52
VIOO Sortino Ratio Rank: 54
VIOO Omega Ratio Rank: 49
VIOO Calmar Ratio Rank: 72
VIOO Martin Ratio Rank: 65

EES

EES Risk / Return Rank: 57
EES Sharpe Ratio Rank: 49
EES Sortino Ratio Rank: 52
EES Omega Ratio Rank: 48
EES Calmar Ratio Rank: 75
EES Martin Ratio Rank: 62

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.

VIOO vs. EES - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard S&P Small-Cap 600 ETF (VIOO) and WisdomTree U.S. SmallCap Fund (EES). 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.

	VIOO	EES	Difference
Sharpe ratio: Return per unit of total volatility	1.82	1.72	+0.09
Sortino ratio: Return per unit of downside risk	2.64	2.51	+0.13
Omega ratio: Gain probability vs. loss probability	1.31	1.30	+0.01
Calmar ratio: Return relative to maximum drawdown	3.63	3.75	-0.12
Martin ratio: Return relative to average drawdown	12.14	11.05	+1.10
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VIOO vs. EES - Sharpe Ratio Comparison

The current VIOO Sharpe Ratio is 1.82, which is comparable to the EES Sharpe Ratio of 1.72. The chart below compares the historical Sharpe Ratios of VIOO and EES, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	VIOO	EES	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.82	1.72	+0.09
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.27	0.29	-0.03
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.47	0.45	+0.02
Sharpe Ratio (All Time) Calculated using the full available price history	0.57	0.34	+0.23

Drawdowns

VIOO vs. EES - Drawdown Comparison

The maximum VIOO drawdown since its inception was -44.15%, smaller than the maximum EES drawdown of -63.66%. Use the drawdown chart below to compare losses from any high point for VIOO and EES.

Drawdown Indicators

	VIOO	EES	Difference
Max Drawdown Largest peak-to-trough decline	-44.15%	-63.66%	+19.51%
Max Drawdown (1Y) Largest decline over 1 year	-8.77%	-7.98%	-0.79%
Max Drawdown (3Y) Largest decline over 3 years	-27.93%	-27.15%	-0.78%
Max Drawdown (5Y) Largest decline over 5 years	-27.93%	-27.15%	-0.78%
Max Drawdown (10Y) Largest decline over 10 years	-44.15%	-50.52%	+6.37%
Current Drawdown Current decline from peak	-0.89%	-1.53%	+0.64%
Average Drawdown Average peak-to-trough decline	-7.33%	-10.37%	+3.04%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.62%	2.70%	-0.08%

Volatility

VIOO vs. EES - Volatility Comparison

Vanguard S&P Small-Cap 600 ETF (VIOO) has a higher volatility of 4.40% compared to WisdomTree U.S. SmallCap Fund (EES) at 4.03%. This indicates that VIOO's price experiences larger fluctuations and is considered to be riskier than EES based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VIOO	EES	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.40%	4.03%	+0.37%
Volatility (6M) Calculated over the trailing 6-month period	11.71%	11.34%	+0.37%
Volatility (1Y) Calculated over the trailing 1-year period	17.59%	17.42%	+0.17%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.40%	21.53%	-0.13%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.99%	23.80%	-0.81%

VIOO vs. EES - Expense Ratio Comparison

VIOO has a 0.10% expense ratio, which is lower than EES's 0.38% expense ratio.

Dividends

VIOO vs. EES - Dividend Comparison

VIOO's dividend yield for the trailing twelve months is around 1.18%, more than EES's 1.12% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
EES WisdomTree U.S. SmallCap Fund	1.12%	1.29%	1.37%	1.18%	1.12%	1.69%	1.29%	1.31%	1.81%	0.93%	1.02%	1.38%
VIOO Vanguard S&P Small-Cap 600 ETF	1.18%	1.36%	1.48%	1.47%	1.51%	1.16%	1.09%	1.37%	1.32%	1.11%	1.06%	1.26%

Frequently Asked Questions

Can I hold both VIOO and EES in my portfolio?

With a correlation of 0.95, VIOO and EES move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, VIOO or EES?

VIOO has higher volatility (4.40%) compared to EES (4.03%). In terms of maximum drawdown, VIOO dropped -44.15% vs EES's -63.66%.

Which ETF is better, VIOO or EES?

On 10-year performance, EES leads with 10.68% vs 10.67% for VIOO. On fees, VIOO is cheaper at 0.10% per year. On volatility, EES has been the lower-risk option at 4.03%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, VIOO or EES?

Over the 10-year period, EES has performed better with a 10.68% return vs 10.67%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, VIOO or EES?

VIOO is cheaper with a 0.10% expense ratio, compared with 0.38% for EES.

Which ETF pays a higher dividend yield, VIOO or EES?

VIOO has the higher dividend yield at 1.18%, compared with 1.12% for EES.

What is the main difference between VIOO and EES?

VIOO tracks S&P SmallCap 600 Index, while EES tracks WisdomTree U.S. Small Cap Index. They also come from different issuers: Vanguard and WisdomTree. Their fees differ too: 0.10% for VIOO and 0.38% for EES.

Which has better risk-adjusted returns?

VIOO currently has the higher Sharpe Ratio (1.82 vs 1.72), 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.