DEFFX vs. MU

Last updated Jul 16, 2026

DEFFX (Delaware Tax-Free Minnesota Fund) is Municipal Bonds fund managed by Delaware Funds by Macquarie, while MU (Micron Technology, Inc.) is a stock. Over the past 10 years, DEFFX returned 2.00%/yr vs 53.07%/yr for MU. At a correlation of -0.04, they often move in opposite directions.

Performance

DEFFX vs. MU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Delaware Tax-Free Minnesota Fund (DEFFX) and Micron Technology, Inc. (MU). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DEFFX achieves a 2.31% return, which is significantly lower than MU's 217.02% return. Over the past 10 years, DEFFX has underperformed MU with an annualized return of 2.00%, while MU has yielded a comparatively higher 53.07% annualized return.

DEFFX

• 1D: 0.00%
• 1M: 0.30%
• 6M: 1.85%
• YTD: 2.31%
• 1Y: 8.89%
• 3Y*: 4.23%
• 5Y*: 0.79%
• 10Y*: 2.00%

MU

• 1D: -8.02%
• 1M: -16.87%
• 6M: 171.43%
• YTD: 217.02%
• 1Y: 654.08%
• 3Y*: 142.55%
• 5Y*: 65.36%
• 10Y*: 53.07%

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

DEFFX vs. MU - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
DEFFX Delaware Tax-Free Minnesota Fund	2.31%	4.51%	3.36%	4.20%	-9.79%	2.13%	4.02%	7.35%	0.89%	5.36%
MU Micron Technology, Inc.	217.02%	240.24%	-0.96%	71.93%	-45.93%	24.21%	39.79%	69.49%	-22.84%	87.59%

Correlation

The correlation between DEFFX and MU is 0.12, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.12
Correlation (3Y) Calculated over the trailing 3-year period	0.07
Correlation (5Y) Calculated over the trailing 5-year period	0.08
Correlation (10Y) Calculated over the trailing 10-year period	0.02
Correlation (All Time) Calculated using the full available price history since Jun 20, 1996	-0.04

The correlation between DEFFX and MU shifts across timeframes, from -0.04 (all time) to 0.12 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

DEFFX vs. MU — Risk / Return Rank

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

DEFFX

DEFFX Risk / Return Rank: 79
DEFFX Sharpe Ratio Rank: 91
DEFFX Sortino Ratio Rank: 91
DEFFX Omega Ratio Rank: 92
DEFFX Calmar Ratio Rank: 62
DEFFX Martin Ratio Rank: 58

MU

MU Risk / Return Rank: 99
MU Sharpe Ratio Rank: 100
MU Sortino Ratio Rank: 99
MU Omega Ratio Rank: 98
MU Calmar Ratio Rank: 100
MU Martin Ratio Rank: 100

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.

DEFFX vs. MU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Delaware Tax-Free Minnesota Fund (DEFFX) and Micron Technology, Inc. (MU). 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.

	DEFFX	MU	Difference
Sharpe ratio: Return per unit of total volatility	2.50	8.65	-6.16
Sortino ratio: Return per unit of downside risk	3.80	5.22	-1.41
Omega ratio: Gain probability vs. loss probability	1.60	1.66	-0.06
Calmar ratio: Return relative to maximum drawdown	2.39	21.81	-19.41
Martin ratio: Return relative to average drawdown	9.00	78.44	-69.45

DEFFX vs. MU - Sharpe Ratio Comparison

The current DEFFX Sharpe Ratio is 2.50, which is lower than the MU Sharpe Ratio of 8.65. The chart below compares the historical Sharpe Ratios of DEFFX and MU, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

DEFFX vs. MU - Drawdown Comparison

The maximum DEFFX drawdown since its inception was -14.70%, smaller than the maximum MU drawdown of -98.25%. Use the drawdown chart below to compare losses from any high point for DEFFX and MU.

Drawdown Indicators

	DEFFX	MU	Difference
Max Drawdown Largest peak-to-trough decline	-14.70%	-98.25%	+83.55%
Max Drawdown (1Y) Largest decline over 1 year	-3.62%	-30.28%	+26.66%
Max Drawdown (3Y) Largest decline over 3 years	-7.29%	-57.63%	+50.34%
Max Drawdown (5Y) Largest decline over 5 years	-14.70%	-57.63%	+42.93%
Max Drawdown (10Y) Largest decline over 10 years	-14.70%	-57.63%	+42.93%
Current Drawdown Current decline from peak	-0.62%	-25.47%	+24.85%
Average Drawdown Average peak-to-trough decline	-1.80%	-58.06%	+56.26%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.97%	8.54%	-7.57%

Volatility

DEFFX vs. MU - Volatility Comparison

The current volatility for Delaware Tax-Free Minnesota Fund (DEFFX) is 0.66%, while Micron Technology, Inc. (MU) has a volatility of 33.05%. This indicates that DEFFX experiences smaller price fluctuations and is considered to be less risky than MU based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DEFFX	MU	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.66%	33.05%	-32.39%
Volatility (6M) Calculated over the trailing 6-month period	2.67%	62.88%	-60.21%
Volatility (1Y) Calculated over the trailing 1-year period	3.47%	76.28%	-72.81%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.71%	54.96%	-50.25%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.33%	50.75%	-46.42%

Dividends

DEFFX vs. MU - Dividend Comparison

DEFFX's dividend yield for the trailing twelve months is around 3.62%, more than MU's 0.06% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DEFFX Delaware Tax-Free Minnesota Fund	3.62%	4.69%	3.94%	2.81%	2.59%	2.18%	2.77%	3.63%	3.51%	4.33%	3.26%	3.52%
MU Micron Technology, Inc.	0.06%	0.16%	0.55%	0.54%	0.89%	0.21%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both DEFFX and MU in my portfolio?

DEFFX and MU have a correlation of 0.12, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DEFFX or MU?

MU has higher volatility (33.05%) compared to DEFFX (0.66%). In terms of maximum drawdown, DEFFX dropped -14.70% vs MU's -98.25%.

Which has better risk-adjusted returns?

MU currently has the higher Sharpe Ratio (8.65 vs 2.50), 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.