MYMK vs. ZMUN

Last updated Jun 4, 2026

MYMK (SPDR SSGA My2031 Municipal Bond ETF) and ZMUN (F/m Ultrashort Tax-Free Municipal ETF) are both Municipal Bonds funds. MYMK is actively managed, while ZMUN is passively managed. At a 0.11 correlation, their price movements are largely independent. MYMK charges 0.20%/yr vs 0.30%/yr for ZMUN.

Performance

MYMK vs. ZMUN - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SPDR SSGA My2031 Municipal Bond ETF (MYMK) 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, MYMK achieves a 0.76% return, which is significantly lower than ZMUN's 1.57% return.

MYMK

• 1D: -0.04%
• 1M: 0.33%
• YTD: 0.76%
• 6M: 1.03%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

ZMUN

• 1D: -0.02%
• 1M: 0.21%
• YTD: 1.57%
• 6M: 1.86%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MYMK vs. ZMUN - Yearly Performance Comparison

	2026 (YTD)	2025
MYMK SPDR SSGA My2031 Municipal Bond ETF	0.76%	1.25%
ZMUN F/m Ultrashort Tax-Free Municipal ETF	1.57%	0.73%

Correlation

The correlation between MYMK and ZMUN is 0.11, 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	0.11

Return for Risk

MYMK vs. ZMUN - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SPDR SSGA My2031 Municipal Bond ETF (MYMK) 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	MYMK	ZMUN	Difference
Sharpe Ratio (All Time) Calculated using the full available price history	1.11	6.46	-5.34

Drawdowns

MYMK vs. ZMUN - Drawdown Comparison

The maximum MYMK drawdown since its inception was -2.22%, which is greater than ZMUN's maximum drawdown of -0.09%. Use the drawdown chart below to compare losses from any high point for MYMK and ZMUN.

Drawdown Indicators

	MYMK	ZMUN	Difference
Max Drawdown Largest peak-to-trough decline	-2.22%	-0.09%	-2.13%
Current Drawdown Current decline from peak	-1.06%	-0.02%	-1.04%
Average Drawdown Average peak-to-trough decline	-0.57%	-0.01%	-0.56%

Volatility

Volatility by Period

	MYMK	ZMUN	Difference
Volatility (1Y) Calculated over the trailing 1-year period	1.97%	0.54%	+1.43%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.97%	0.54%	+1.43%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.97%	0.54%	+1.43%

MYMK vs. ZMUN - Expense Ratio Comparison

MYMK has a 0.20% expense ratio, which is lower than ZMUN's 0.30% expense ratio.

Dividends

MYMK vs. ZMUN - Dividend Comparison

MYMK's dividend yield for the trailing twelve months is around 1.84%, less than ZMUN's 2.28% yield.

Position	TTM	2025
MYMK SPDR SSGA My2031 Municipal Bond ETF	1.84%	0.77%
ZMUN F/m Ultrashort Tax-Free Municipal ETF	2.28%	0.70%

Frequently Asked Questions

Can I hold both MYMK and ZMUN in my portfolio?

MYMK and ZMUN have a correlation of 0.11, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, MYMK or ZMUN?

On fees, MYMK is cheaper at 0.20% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, MYMK or ZMUN?

MYMK is cheaper with a 0.20% expense ratio, compared with 0.30% for ZMUN.

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

ZMUN has the higher dividend yield at 2.28%, compared with 1.84% for MYMK.

What is the main difference between MYMK and ZMUN?

They also come from different issuers: State Street and F/m Investments. Their fees differ too: 0.20% for MYMK and 0.30% for ZMUN.