DMTFX vs. OIFIX
Compare and contrast key facts about Delaware Tax Free USA Fund (DMTFX) and Optimum Fixed Income Fund (OIFIX).
DMTFX is managed by Delaware Funds. It was launched on Jan 10, 1984. OIFIX is managed by Delaware Funds. It was launched on Aug 1, 2003.
Performance
DMTFX vs. OIFIX - Performance Comparison
Loading graphics...
DMTFX vs. OIFIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
DMTFX Delaware Tax Free USA Fund | -1.20% | 2.13% | 3.17% | 10.72% | -16.20% | 5.19% | 8.85% | 8.97% | 0.29% | 7.19% |
OIFIX Optimum Fixed Income Fund | -0.72% | 7.64% | 1.49% | 5.90% | -13.96% | -1.78% | 11.14% | 8.63% | -0.70% | 4.50% |
Returns By Period
In the year-to-date period, DMTFX achieves a -1.20% return, which is significantly lower than OIFIX's -0.72% return. Over the past 10 years, DMTFX has outperformed OIFIX with an annualized return of 2.45%, while OIFIX has yielded a comparatively lower 2.07% annualized return.
DMTFX
- 1D
- 0.30%
- 1M
- -3.30%
- YTD
- -1.20%
- 6M
- -0.58%
- 1Y
- 1.13%
- 3Y*
- 3.69%
- 5Y*
- 0.26%
- 10Y*
- 2.45%
OIFIX
- 1D
- 0.49%
- 1M
- -2.37%
- YTD
- -0.72%
- 6M
- 0.35%
- 1Y
- 3.88%
- 3Y*
- 3.78%
- 5Y*
- 0.06%
- 10Y*
- 2.07%
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
DMTFX vs. OIFIX - Expense Ratio Comparison
Both DMTFX and OIFIX have an expense ratio of 0.80%.
Return for Risk
DMTFX vs. OIFIX — Risk / Return Rank
DMTFX
OIFIX
DMTFX vs. OIFIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Delaware Tax Free USA Fund (DMTFX) and Optimum Fixed Income Fund (OIFIX). 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.
| DMTFX | OIFIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.28 | 0.93 | -0.65 |
Sortino ratioReturn per unit of downside risk | 0.41 | 1.33 | -0.92 |
Omega ratioGain probability vs. loss probability | 1.08 | 1.17 | -0.09 |
Calmar ratioReturn relative to maximum drawdown | 0.26 | 1.60 | -1.34 |
Martin ratioReturn relative to average drawdown | 0.62 | 4.82 | -4.21 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading graphics...
Sharpe Ratios by Period
| DMTFX | OIFIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.28 | 0.93 | -0.65 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.04 | 0.01 | +0.03 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.41 | 0.43 | -0.02 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.95 | 0.88 | +0.07 |
Correlation
The correlation between DMTFX and OIFIX is 0.51, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.
Dividends
DMTFX vs. OIFIX - Dividend Comparison
DMTFX's dividend yield for the trailing twelve months is around 4.42%, more than OIFIX's 3.89% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
DMTFX Delaware Tax Free USA Fund | 4.42% | 5.69% | 4.77% | 3.53% | 3.67% | 4.00% | 4.24% | 4.44% | 3.64% | 4.74% | 4.70% | 3.63% |
OIFIX Optimum Fixed Income Fund | 3.89% | 3.86% | 3.97% | 3.23% | 3.42% | 2.21% | 6.88% | 3.22% | 2.43% | 2.50% | 2.17% | 3.24% |
Drawdowns
DMTFX vs. OIFIX - Drawdown Comparison
The maximum DMTFX drawdown since its inception was -21.92%, which is greater than OIFIX's maximum drawdown of -19.46%. Use the drawdown chart below to compare losses from any high point for DMTFX and OIFIX.
Loading graphics...
Drawdown Indicators
| DMTFX | OIFIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -21.92% | -19.46% | -2.46% |
Max Drawdown (1Y)Largest decline over 1 year | -7.08% | -2.90% | -4.18% |
Max Drawdown (5Y)Largest decline over 5 years | -21.92% | -19.30% | -2.62% |
Max Drawdown (10Y)Largest decline over 10 years | -21.92% | -19.46% | -2.46% |
Current DrawdownCurrent decline from peak | -3.57% | -2.93% | -0.64% |
Average DrawdownAverage peak-to-trough decline | -2.56% | -2.94% | +0.38% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.99% | 0.96% | +2.03% |
Volatility
DMTFX vs. OIFIX - Volatility Comparison
The current volatility for Delaware Tax Free USA Fund (DMTFX) is 1.52%, while Optimum Fixed Income Fund (OIFIX) has a volatility of 1.66%. This indicates that DMTFX experiences smaller price fluctuations and is considered to be less risky than OIFIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading graphics...
Volatility by Period
| DMTFX | OIFIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.52% | 1.66% | -0.14% |
Volatility (6M)Calculated over the trailing 6-month period | 2.43% | 2.54% | -0.11% |
Volatility (1Y)Calculated over the trailing 1-year period | 7.46% | 4.47% | +2.99% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.56% | 5.87% | +0.69% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.97% | 4.85% | +1.12% |