IGNAX vs. DMTFX

Last updated Jun 5, 2026

IGNAX (Delaware Ivy Natural Resources Fund) and DMTFX (Delaware Tax Free USA Fund) are both mutual funds - IGNAX is a Energy Equities fund managed by Delaware Funds, while DMTFX is a Municipal Bonds fund managed by Delaware Funds. Over the past 10 years, IGNAX returned 7.81%/yr vs 2.67%/yr for DMTFX. At a correlation of -0.09, they often move in opposite directions. IGNAX charges 1.82%/yr vs 0.80%/yr for DMTFX.

Performance

IGNAX vs. DMTFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Delaware Ivy Natural Resources Fund (IGNAX) and Delaware Tax Free USA Fund (DMTFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IGNAX achieves a 20.34% return, which is significantly higher than DMTFX's 2.11% return. Over the past 10 years, IGNAX has outperformed DMTFX with an annualized return of 7.81%, while DMTFX has yielded a comparatively lower 2.67% annualized return.

IGNAX

• 1D: -0.36%
• 1M: 0.98%
• YTD: 20.34%
• 6M: 22.67%
• 1Y: 55.44%
• 3Y*: 20.65%
• 5Y*: 15.01%
• 10Y*: 7.81%

DMTFX

• 1D: -0.10%
• 1M: 1.13%
• YTD: 2.11%
• 6M: 2.30%
• 1Y: 7.16%
• 3Y*: 4.50%
• 5Y*: 0.30%
• 10Y*: 2.67%

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

IGNAX vs. DMTFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IGNAX Delaware Ivy Natural Resources Fund	20.34%	38.01%	-0.56%	1.26%	17.52%	26.06%	-12.38%	9.24%	-23.79%	2.89%
DMTFX Delaware Tax Free USA Fund	2.11%	2.13%	3.17%	10.72%	-16.20%	5.19%	8.85%	8.97%	0.29%	7.19%

Correlation

The correlation between IGNAX and DMTFX is 0.06, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.06
Correlation (3Y) Calculated over the trailing 3-year period	0.06
Correlation (5Y) Calculated over the trailing 5-year period	0.03
Correlation (10Y) Calculated over the trailing 10-year period	-0.04
Correlation (All Time) Calculated using the full available price history since Jan 2, 1997	-0.09

The correlation between IGNAX and DMTFX shifts across timeframes, from -0.09 (all time) to 0.06 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

IGNAX vs. DMTFX — Risk / Return Rank

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

IGNAX

IGNAX Risk / Return Rank: 91
IGNAX Sharpe Ratio Rank: 94
IGNAX Sortino Ratio Rank: 84
IGNAX Omega Ratio Rank: 83
IGNAX Calmar Ratio Rank: 98
IGNAX Martin Ratio Rank: 98

DMTFX

DMTFX Risk / Return Rank: 39
DMTFX Sharpe Ratio Rank: 40
DMTFX Sortino Ratio Rank: 46
DMTFX Omega Ratio Rank: 53
DMTFX Calmar Ratio Rank: 32
DMTFX Martin Ratio Rank: 26

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.

IGNAX vs. DMTFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Delaware Ivy Natural Resources Fund (IGNAX) and Delaware Tax Free USA Fund (DMTFX). 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.

	IGNAX	DMTFX	Difference
Sharpe ratio: Return per unit of total volatility	3.24	1.83	+1.41
Sortino ratio: Return per unit of downside risk	3.98	2.84	+1.14
Omega ratio: Gain probability vs. loss probability	1.55	1.40	+0.16
Calmar ratio: Return relative to maximum drawdown	9.48	2.10	+7.39
Martin ratio: Return relative to average drawdown	30.28	6.14	+24.14
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IGNAX vs. DMTFX - Sharpe Ratio Comparison

The current IGNAX Sharpe Ratio is 3.24, which is higher than the DMTFX Sharpe Ratio of 1.83. The chart below compares the historical Sharpe Ratios of IGNAX and DMTFX, 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

	IGNAX	DMTFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.24	1.83	+1.41
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.69	0.05	+0.64
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.35	0.45	-0.10
Sharpe Ratio (All Time) Calculated using the full available price history	0.22	0.97	-0.76

Drawdowns

IGNAX vs. DMTFX - Drawdown Comparison

The maximum IGNAX drawdown since its inception was -77.49%, which is greater than DMTFX's maximum drawdown of -21.92%. Use the drawdown chart below to compare losses from any high point for IGNAX and DMTFX.

Drawdown Indicators

	IGNAX	DMTFX	Difference
Max Drawdown Largest peak-to-trough decline	-77.49%	-21.92%	-55.57%
Max Drawdown (1Y) Largest decline over 1 year	-5.89%	-3.60%	-2.29%
Max Drawdown (3Y) Largest decline over 3 years	-22.86%	-11.32%	-11.54%
Max Drawdown (5Y) Largest decline over 5 years	-24.79%	-21.92%	-2.87%
Max Drawdown (10Y) Largest decline over 10 years	-57.95%	-21.92%	-36.03%
Current Drawdown Current decline from peak	-8.01%	-0.35%	-7.66%
Average Drawdown Average peak-to-trough decline	-35.68%	-2.55%	-33.13%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.84%	1.22%	+0.62%

Volatility

IGNAX vs. DMTFX - Volatility Comparison

Delaware Ivy Natural Resources Fund (IGNAX) has a higher volatility of 4.31% compared to Delaware Tax Free USA Fund (DMTFX) at 1.47%. This indicates that IGNAX's price experiences larger fluctuations and is considered to be riskier than DMTFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IGNAX	DMTFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.31%	1.47%	+2.84%
Volatility (6M) Calculated over the trailing 6-month period	13.21%	2.88%	+10.33%
Volatility (1Y) Calculated over the trailing 1-year period	17.25%	4.12%	+13.13%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.91%	6.61%	+15.30%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.48%	6.00%	+16.48%

IGNAX vs. DMTFX - Expense Ratio Comparison

IGNAX has a 1.82% expense ratio, which is higher than DMTFX's 0.80% expense ratio.

Dividends

IGNAX vs. DMTFX - Dividend Comparison

IGNAX has not paid dividends to shareholders, while DMTFX's dividend yield for the trailing twelve months is around 4.27%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DMTFX Delaware Tax Free USA Fund	4.27%	5.69%	4.77%	3.53%	3.67%	4.00%	4.24%	4.44%	3.64%	4.74%	4.70%	3.63%
IGNAX Delaware Ivy Natural Resources Fund	0.00%	0.00%	5.68%	1.94%	2.02%	2.30%	0.29%	1.75%	0.00%	0.00%	0.06%	0.00%

Frequently Asked Questions

Can I hold both IGNAX and DMTFX in my portfolio?

IGNAX and DMTFX have a correlation of 0.06, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IGNAX or DMTFX?

IGNAX has higher volatility (4.31%) compared to DMTFX (1.47%). In terms of maximum drawdown, IGNAX dropped -77.49% vs DMTFX's -21.92%.

Which has better risk-adjusted returns?

IGNAX currently has the higher Sharpe Ratio (3.24 vs 1.83), 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.