OIIEX vs. VOO
OIIEX (Optimum International Fund) and VOO (Vanguard S&P 500 ETF) are both funds - OIIEX is a Foreign Large Cap Equities fund managed by Delaware Funds, while VOO is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, OIIEX returned 8.68%/yr vs 15.17%/yr for VOO. Their 0.77 correlation means they have sometimes moved together and sometimes differently. OIIEX charges 1.04%/yr vs 0.03%/yr for VOO.
Performance
OIIEX vs. VOO - Performance Comparison
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Returns By Period
In the year-to-date period, OIIEX achieves a 14.03% return, which is significantly higher than VOO's 11.72% return. Over the past 10 years, OIIEX has underperformed VOO with an annualized return of 8.68%, while VOO has yielded a comparatively higher 15.17% annualized return.
OIIEX
- 1D
- 0.28%
- 1M
- -0.39%
- 6M
- 7.87%
- YTD
- 14.03%
- 1Y
- 24.61%
- 3Y*
- 17.24%
- 5Y*
- 6.61%
- 10Y*
- 8.68%
- ALL TIME*
- 7.14%
VOO
- 1D
- 1.42%
- 1M
- 1.69%
- 6M
- 9.53%
- YTD
- 11.72%
- 1Y
- 23.30%
- 3Y*
- 20.85%
- 5Y*
- 13.12%
- 10Y*
- 15.17%
- ALL TIME*
- 14.88%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $3.97B | $3.80B | $5.49B |
OIIEX vs. VOO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
OIIEX Optimum International Fund | 14.03% | 25.99% | 8.41% | 17.37% | -23.04% | 8.52% | 12.57% | 19.60% | -13.98% | 30.46% |
VOO Vanguard S&P 500 ETF | 11.72% | 17.82% | 24.98% | 26.32% | -18.17% | 28.79% | 18.32% | 31.37% | -4.50% | 21.77% |
Correlation
The correlation between OIIEX and VOO is 0.78, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.78 |
Correlation (3Y) Balances recent behavior with more history. | 0.71 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.74 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.74 |
Correlation (All Time) Calculated using the full available price history since Sep 9, 2010 | 0.77 |
The correlation between OIIEX and VOO has been stable across timeframes, ranging from 0.71 to 0.78 - a consistent structural relationship.
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Return for Risk
OIIEX vs. VOO — Risk / Return Rank
OIIEX
VOO
OIIEX vs. VOO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Optimum International Fund (OIIEX) 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.
| OIIEX | VOO | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.46 | ||
| Sortino ratioReturn per unit of downside risk | -0.61 | ||
| Omega ratioGain probability vs. loss probability | 1.26 | 1.33 | -0.07 |
| Calmar ratioReturn relative to maximum drawdown | 1.96 | 2.63 | -0.67 |
| Martin ratioReturn relative to average drawdown | 7.08 | 11.23 | -4.16 |
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Drawdowns
OIIEX vs. VOO - Drawdown Comparison
The maximum OIIEX drawdown since its inception was -58.10%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for OIIEX and VOO.
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Drawdown Indicators
| OIIEX | VOO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -58.10% | -33.99% | -24.11% |
Max Drawdown (1Y)Largest decline over 1 year | -11.93% | -8.90% | -3.03% |
Max Drawdown (3Y)Largest decline over 3 years | -14.64% | -18.69% | +4.05% |
Max Drawdown (5Y)Largest decline over 5 years | -37.09% | -24.52% | -12.57% |
Max Drawdown (10Y)Largest decline over 10 years | -37.43% | -33.99% | -3.44% |
Current DrawdownCurrent decline from peak | -2.97% | 0.00% | -2.97% |
Average DrawdownAverage peak-to-trough decline | -12.37% | -3.67% | -8.70% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.30% | 2.08% | +1.22% |
Volatility
OIIEX vs. VOO - Volatility Comparison
Optimum International Fund (OIIEX) has a higher volatility of 5.55% compared to Vanguard S&P 500 ETF (VOO) at 3.81%. This indicates that OIIEX'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
| OIIEX | VOO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.55% | 3.81% | +1.74% |
Volatility (6M)Calculated over the trailing 6-month period | 15.04% | 10.18% | +4.86% |
Volatility (1Y)Calculated over the trailing 1-year period | 17.09% | 12.80% | +4.29% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 17.14% | 16.95% | +0.19% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 17.14% | 18.02% | -0.88% |
OIIEX vs. VOO - Expense Ratio Comparison
OIIEX has a 1.04% expense ratio, which is higher than VOO's 0.03% expense ratio.
Dividends
OIIEX vs. VOO - Dividend Comparison
OIIEX's dividend yield for the trailing twelve months is around 1.23%, more than VOO's 1.05% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
OIIEX Optimum International Fund | 1.23% | 1.40% | 1.62% | 1.37% | 3.08% | 15.53% | 3.16% | 2.10% | 8.98% | 2.06% | 1.16% | 0.80% |
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
OIIEX and VOO have a correlation of 0.78, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
OIIEX has higher volatility (5.55%) compared to VOO (3.81%). In terms of maximum drawdown, OIIEX dropped -58.10% vs VOO's -33.99%.
VOO currently has the higher Sharpe Ratio (1.83 vs 1.37), 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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