EOS vs. VOO
EOS (Eaton Vance Enhanced Equity Income Fund II) and VOO (Vanguard S&P 500 ETF) are both funds - EOS is a Derivative Income fund actively managed by Eaton Vance, while VOO is a S&P 500 fund tracking the S&P 500 Index. EOS is actively managed, while VOO is passively managed. Over the past 10 years, EOS returned 12.92%/yr vs 15.14%/yr for VOO. Their 0.76 correlation means they have sometimes moved together and sometimes differently. EOS charges 1.09%/yr vs 0.03%/yr for VOO.
Performance
EOS vs. VOO - Performance Comparison
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Returns By Period
In the year-to-date period, EOS achieves a -4.66% return, which is significantly lower than VOO's 10.16% return. Over the past 10 years, EOS has underperformed VOO with an annualized return of 12.92%, while VOO has yielded a comparatively higher 15.14% annualized return.
EOS
- 1D
- 1.09%
- 1M
- -2.87%
- 6M
- -1.06%
- YTD
- -4.66%
- 1Y
- -2.93%
- 3Y*
- 13.63%
- 5Y*
- 6.34%
- 10Y*
- 12.92%
- ALL TIME*
- 9.30%
VOO
- 1D
- 0.71%
- 1M
- 0.26%
- 6M
- 8.58%
- YTD
- 10.16%
- 1Y
- 21.58%
- 3Y*
- 19.42%
- 5Y*
- 12.83%
- 10Y*
- 15.14%
- ALL TIME*
- 14.78%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $3.40M | $2.60M | $2.73M | |
| $3.82B | $3.78B | $5.44B |
EOS vs. VOO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
EOS Eaton Vance Enhanced Equity Income Fund II | -4.66% | 5.77% | 38.69% | 22.59% | -26.50% | 20.30% | 29.45% | 30.32% | 2.77% | 27.89% |
VOO Vanguard S&P 500 ETF | 10.16% | 17.82% | 24.98% | 26.32% | -18.17% | 28.79% | 18.32% | 31.37% | -4.50% | 21.77% |
Correlation
The correlation between EOS and VOO is 0.80, meaning they have usually moved in the same direction, including during past declines.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.80 |
Correlation (3Y) Balances recent behavior with more history. | 0.80 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.83 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.76 |
Correlation (All Time) Calculated using the full available price history since Sep 9, 2010 | 0.76 |
The correlation between EOS and VOO has been stable across timeframes, ranging from 0.76 to 0.83 - a consistent structural relationship.
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Return for Risk
EOS vs. VOO — Risk / Return Rank
EOS
VOO
EOS vs. VOO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Eaton Vance Enhanced Equity Income Fund II (EOS) 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.
| EOS | VOO | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.82 | ||
| Sortino ratioReturn per unit of downside risk | -2.44 | ||
| Omega ratioGain probability vs. loss probability | 0.97 | 1.28 | -0.31 |
| Calmar ratioReturn relative to maximum drawdown | -0.27 | 2.21 | -2.47 |
| Martin ratioReturn relative to average drawdown | -0.80 | 9.44 | -10.24 |
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Drawdowns
EOS vs. VOO - Drawdown Comparison
The maximum EOS drawdown since its inception was -55.74%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for EOS and VOO.
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Drawdown Indicators
| EOS | VOO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -55.74% | -33.99% | -21.75% |
Max Drawdown (1Y)Largest decline over 1 year | -17.12% | -8.90% | -8.22% |
Max Drawdown (3Y)Largest decline over 3 years | -24.31% | -18.69% | -5.62% |
Max Drawdown (5Y)Largest decline over 5 years | -34.32% | -24.52% | -9.80% |
Max Drawdown (10Y)Largest decline over 10 years | -41.12% | -33.99% | -7.13% |
Current DrawdownCurrent decline from peak | -6.85% | -1.38% | -5.47% |
Average DrawdownAverage peak-to-trough decline | -7.80% | -3.67% | -4.13% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 5.66% | 2.08% | +3.58% |
Volatility
EOS vs. VOO - Volatility Comparison
Eaton Vance Enhanced Equity Income Fund II (EOS) has a higher volatility of 4.32% compared to Vanguard S&P 500 ETF (VOO) at 3.54%. This indicates that EOS'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.
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Volatility by Period
| EOS | VOO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.32% | 3.54% | +0.78% |
Volatility (6M)Calculated over the trailing 6-month period | 12.69% | 10.10% | +2.59% |
Volatility (1Y)Calculated over the trailing 1-year period | 15.80% | 12.82% | +2.98% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 19.82% | 16.93% | +2.89% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 20.77% | 18.01% | +2.76% |
EOS vs. VOO - Expense Ratio Comparison
EOS has a 1.09% expense ratio, which is higher than VOO's 0.03% expense ratio.
Dividends
EOS vs. VOO - Dividend Comparison
EOS's dividend yield for the trailing twelve months is around 8.59%, more than VOO's 1.07% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
EOS Eaton Vance Enhanced Equity Income Fund II | 8.59% | 7.81% | 7.17% | 7.38% | 9.69% | 5.60% | 5.01% | 6.65% | 7.16% | 6.90% | 8.20% | 7.70% |
VOO Vanguard S&P 500 ETF | 1.07% | 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
EOS and VOO have a correlation of 0.80, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
EOS has higher volatility (4.32%) compared to VOO (3.54%). In terms of maximum drawdown, EOS dropped -55.74% vs VOO's -33.99%.
VOO currently has the higher Sharpe Ratio (1.53 vs -0.29), 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.
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