OILGX vs. DVTAX
OILGX (Optimum Large Cap Growth Fund) and DVTAX (Delaware Tax-Free California Fund) are both mutual funds - OILGX is a Large Cap Growth Equities fund managed by Delaware Funds, while DVTAX is a Municipal Bonds fund managed by Delaware Funds. Over the past 10 years, OILGX returned 17.19%/yr vs 2.36%/yr for DVTAX. At a correlation of -0.07, they often move in opposite directions. OILGX charges 0.89%/yr vs 0.82%/yr for DVTAX.
Performance
OILGX vs. DVTAX - Performance Comparison
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Returns By Period
In the year-to-date period, OILGX achieves a 6.27% return, which is significantly higher than DVTAX's 2.43% return. Over the past 10 years, OILGX has outperformed DVTAX with an annualized return of 17.19%, while DVTAX has yielded a comparatively lower 2.36% annualized return.
OILGX
- 1D
- 1.42%
- 1M
- -0.49%
- YTD
- 6.27%
- 6M
- 5.55%
- 1Y
- 24.37%
- 3Y*
- 26.88%
- 5Y*
- 13.18%
- 10Y*
- 17.19%
DVTAX
- 1D
- 0.09%
- 1M
- 2.31%
- YTD
- 2.43%
- 6M
- 2.97%
- 1Y
- 7.75%
- 3Y*
- 4.37%
- 5Y*
- 0.90%
- 10Y*
- 2.36%
OILGX vs. DVTAX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
OILGX Optimum Large Cap Growth Fund | 6.27% | 15.97% | 49.90% | 41.16% | -34.69% | 17.88% | 33.81% | 31.34% | -0.80% | 32.46% |
DVTAX Delaware Tax-Free California Fund | 2.43% | 2.10% | 3.39% | 8.80% | -12.31% | 4.08% | 5.66% | 8.04% | 0.07% | 6.89% |
Correlation
The correlation between OILGX and DVTAX is 0.13, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.13 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.09 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.11 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.04 |
Correlation (All Time) Calculated using the full available price history since Jul 23, 2003 | -0.07 |
The correlation between OILGX and DVTAX shifts across timeframes, from -0.07 (all time) to 0.13 (1 year), reflecting how their relationship changes across market environments.
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Return for Risk
OILGX vs. DVTAX — Risk / Return Rank
OILGX
DVTAX
OILGX vs. DVTAX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Optimum Large Cap Growth Fund (OILGX) and Delaware Tax-Free California Fund (DVTAX). 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.
| OILGX | DVTAX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.58 | ||
| Sortino ratioReturn per unit of downside risk | -1.16 | ||
| Omega ratioGain probability vs. loss probability | 1.25 | 1.44 | -0.19 |
| Calmar ratioReturn relative to maximum drawdown | 1.55 | 2.18 | -0.62 |
| Martin ratioReturn relative to average drawdown | 5.36 | 6.97 | -1.62 |
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Drawdowns
OILGX vs. DVTAX - Drawdown Comparison
The maximum OILGX drawdown since its inception was -54.28%, which is greater than DVTAX's maximum drawdown of -18.38%. Use the drawdown chart below to compare losses from any high point for OILGX and DVTAX.
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Drawdown Indicators
| OILGX | DVTAX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -54.28% | -18.38% | -35.90% |
Max Drawdown (1Y)Largest decline over 1 year | -15.31% | -3.54% | -11.77% |
Max Drawdown (3Y)Largest decline over 3 years | -23.75% | -8.76% | -14.99% |
Max Drawdown (5Y)Largest decline over 5 years | -39.97% | -18.38% | -21.59% |
Max Drawdown (10Y)Largest decline over 10 years | -39.97% | -18.38% | -21.59% |
Current DrawdownCurrent decline from peak | -3.71% | 0.00% | -3.71% |
Average DrawdownAverage peak-to-trough decline | -8.47% | -2.34% | -6.13% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.43% | 1.10% | +3.33% |
Volatility
OILGX vs. DVTAX - Volatility Comparison
Optimum Large Cap Growth Fund (OILGX) has a higher volatility of 6.14% compared to Delaware Tax-Free California Fund (DVTAX) at 1.09%. This indicates that OILGX's price experiences larger fluctuations and is considered to be riskier than DVTAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| OILGX | DVTAX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.14% | 1.09% | +5.05% |
Volatility (6M)Calculated over the trailing 6-month period | 13.11% | 2.82% | +10.29% |
Volatility (1Y)Calculated over the trailing 1-year period | 16.80% | 3.86% | +12.94% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 23.51% | 5.79% | +17.72% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 22.09% | 5.17% | +16.92% |
OILGX vs. DVTAX - Expense Ratio Comparison
OILGX has a 0.89% expense ratio, which is higher than DVTAX's 0.82% expense ratio.
Dividends
OILGX vs. DVTAX - Dividend Comparison
OILGX's dividend yield for the trailing twelve months is around 13.22%, more than DVTAX's 3.95% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
DVTAX Delaware Tax-Free California Fund | 3.95% | 5.06% | 4.06% | 3.19% | 3.33% | 2.95% | 3.54% | 4.29% | 3.51% | 3.72% | 3.53% | 3.44% |
OILGX Optimum Large Cap Growth Fund | 13.22% | 14.05% | 20.62% | 11.50% | 4.95% | 14.42% | 7.72% | 2.98% | 14.76% | 18.13% | 3.68% | 10.49% |
Frequently Asked Questions
OILGX and DVTAX have a correlation of 0.13, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
OILGX has higher volatility (6.14%) compared to DVTAX (1.09%). In terms of maximum drawdown, OILGX dropped -54.28% vs DVTAX's -18.38%.
DVTAX currently has the higher Sharpe Ratio (2.00 vs 1.42), 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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