WTMU vs. ZMUN

Last updated Jun 5, 2026

WTMU (WisdomTree Core Laddered Municipal ETF) and ZMUN (F/m Ultrashort Tax-Free Municipal ETF) are both Municipal Bonds funds. WTMU is actively managed, while ZMUN is passively managed. At a 0.15 correlation, their price movements are largely independent. WTMU charges 0.25%/yr vs 0.30%/yr for ZMUN.

Performance

WTMU vs. ZMUN - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in WisdomTree Core Laddered Municipal ETF (WTMU) and F/m Ultrashort Tax-Free Municipal ETF (ZMUN). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, WTMU achieves a 0.56% return, which is significantly lower than ZMUN's 1.61% return.

WTMU

• 1D: 0.12%
• 1M: 0.55%
• YTD: 0.56%
• 6M: 1.06%
• 1Y: 5.80%
• 3Y*: —
• 5Y*: —
• 10Y*: —

ZMUN

• 1D: 0.04%
• 1M: 0.31%
• YTD: 1.61%
• 6M: 1.88%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

WTMU vs. ZMUN - Yearly Performance Comparison

	2026 (YTD)	2025
WTMU WisdomTree Core Laddered Municipal ETF	0.56%	1.63%
ZMUN F/m Ultrashort Tax-Free Municipal ETF	1.61%	0.73%

Correlation

The correlation between WTMU and ZMUN is 0.15, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (All Time) Calculated using the full available price history since Oct 1, 2025	0.15

Return for Risk

WTMU vs. ZMUN — Risk / Return Rank

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

WTMU

WTMU Risk / Return Rank: 69
WTMU Sharpe Ratio Rank: 83
WTMU Sortino Ratio Rank: 86
WTMU Omega Ratio Rank: 91
WTMU Calmar Ratio Rank: 44
WTMU Martin Ratio Rank: 39

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.

WTMU vs. ZMUN - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for WisdomTree Core Laddered Municipal ETF (WTMU) and F/m Ultrashort Tax-Free Municipal ETF (ZMUN). 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.

	WTMU	ZMUN	Difference
Sharpe ratio: Return per unit of total volatility	2.63	—	—
Sortino ratio: Return per unit of downside risk	3.82	—	—
Omega ratio: Gain probability vs. loss probability	1.59	—	—
Calmar ratio: Return relative to maximum drawdown	2.14	—	—
Martin ratio: Return relative to average drawdown	6.06	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	WTMU	ZMUN	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.63	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.03	6.54	-5.51

Drawdowns

WTMU vs. ZMUN - Drawdown Comparison

The maximum WTMU drawdown since its inception was -4.24%, which is greater than ZMUN's maximum drawdown of -0.09%. Use the drawdown chart below to compare losses from any high point for WTMU and ZMUN.

Drawdown Indicators

	WTMU	ZMUN	Difference
Max Drawdown Largest peak-to-trough decline	-4.24%	-0.09%	-4.15%
Max Drawdown (1Y) Largest decline over 1 year	-2.72%	—	—
Current Drawdown Current decline from peak	-1.40%	0.00%	-1.40%
Average Drawdown Average peak-to-trough decline	-0.64%	-0.01%	-0.63%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.96%	—	—

Volatility

Volatility by Period

	WTMU	ZMUN	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.75%	—	—
Volatility (6M) Calculated over the trailing 6-month period	1.77%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	2.23%	0.54%	+1.69%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.76%	0.54%	+4.22%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.76%	0.54%	+4.22%

WTMU vs. ZMUN - Expense Ratio Comparison

WTMU has a 0.25% expense ratio, which is lower than ZMUN's 0.30% expense ratio.

Dividends

WTMU vs. ZMUN - Dividend Comparison

WTMU's dividend yield for the trailing twelve months is around 2.98%, more than ZMUN's 2.28% yield.

Position	TTM	2025
WTMU WisdomTree Core Laddered Municipal ETF	2.98%	2.15%
ZMUN F/m Ultrashort Tax-Free Municipal ETF	2.28%	0.70%

Frequently Asked Questions

Can I hold both WTMU and ZMUN in my portfolio?

WTMU and ZMUN have a correlation of 0.15, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, WTMU or ZMUN?

On fees, WTMU is cheaper at 0.25% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, WTMU or ZMUN?

WTMU is cheaper with a 0.25% expense ratio, compared with 0.30% for ZMUN.

Which ETF pays a higher dividend yield, WTMU or ZMUN?

WTMU has the higher dividend yield at 2.98%, compared with 2.28% for ZMUN.

What is the main difference between WTMU and ZMUN?

They also come from different issuers: WisdomTree and F/m Investments. Their fees differ too: 0.25% for WTMU and 0.30% for ZMUN.