MUNX vs. MYMF

Last updated Jun 7, 2026

MUNX (AMG GW&K Muni Income ETF) and MYMF (State Street My2026 Municipal Bond ETF) are both Municipal Bonds funds. Both are actively managed. At a 0.29 correlation, their price movements are largely independent. MUNX charges 0.29%/yr vs 0.20%/yr for MYMF.

Performance

MUNX vs. MYMF - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AMG GW&K Muni Income ETF (MUNX) and State Street My2026 Municipal Bond ETF (MYMF). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MUNX achieves a 1.74% return, which is significantly higher than MYMF's 0.66% return.

MUNX

• 1D: -0.25%
• 1M: 0.36%
• YTD: 1.74%
• 6M: 1.97%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

MYMF

• 1D: -0.02%
• 1M: 0.37%
• YTD: 0.66%
• 6M: 0.87%
• 1Y: 3.06%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MUNX vs. MYMF - Yearly Performance Comparison

	2026 (YTD)	2025
MUNX AMG GW&K Muni Income ETF	1.74%	0.52%
MYMF State Street My2026 Municipal Bond ETF	0.66%	0.55%

Correlation

The correlation between MUNX and MYMF is 0.29, 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 31, 2025	0.29

Return for Risk

MUNX vs. MYMF — Risk / Return Rank

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

MYMF

MYMF Risk / Return Rank: 96
MYMF Sharpe Ratio Rank: 96
MYMF Sortino Ratio Rank: 98
MYMF Omega Ratio Rank: 98
MYMF Calmar Ratio Rank: 95
MYMF Martin Ratio Rank: 95

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.

MUNX vs. MYMF - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AMG GW&K Muni Income ETF (MUNX) and State Street My2026 Municipal Bond ETF (MYMF). 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

	MUNX	MYMF	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	3.95	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.12	1.39	-0.27

Drawdowns

MUNX vs. MYMF - Drawdown Comparison

The maximum MUNX drawdown since its inception was -2.95%, which is greater than MYMF's maximum drawdown of -2.02%. Use the drawdown chart below to compare losses from any high point for MUNX and MYMF.

Drawdown Indicators

	MUNX	MYMF	Difference
Max Drawdown Largest peak-to-trough decline	-2.95%	-2.02%	-0.93%
Max Drawdown (1Y) Largest decline over 1 year	—	-0.38%	—
Current Drawdown Current decline from peak	-0.50%	-0.02%	-0.48%
Average Drawdown Average peak-to-trough decline	-0.64%	-0.18%	-0.46%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.10%	—

Volatility

Volatility by Period

	MUNX	MYMF	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.23%	—
Volatility (6M) Calculated over the trailing 6-month period	—	0.53%	—
Volatility (1Y) Calculated over the trailing 1-year period	3.47%	0.75%	+2.72%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.47%	1.65%	+1.82%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.47%	1.65%	+1.82%

MUNX vs. MYMF - Expense Ratio Comparison

MUNX has a 0.29% expense ratio, which is higher than MYMF's 0.20% expense ratio.

Dividends

MUNX vs. MYMF - Dividend Comparison

MUNX's dividend yield for the trailing twelve months is around 1.95%, less than MYMF's 2.47% yield.

Position	TTM	2025	2024
MUNX AMG GW&K Muni Income ETF	1.95%	0.55%	0.00%
MYMF State Street My2026 Municipal Bond ETF	2.47%	2.80%	0.83%

Frequently Asked Questions

Can I hold both MUNX and MYMF in my portfolio?

MUNX and MYMF have a correlation of 0.29, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, MUNX or MYMF?

On fees, MYMF 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, MUNX or MYMF?

MYMF is cheaper with a 0.20% expense ratio, compared with 0.29% for MUNX.

Which ETF pays a higher dividend yield, MUNX or MYMF?

MYMF has the higher dividend yield at 2.47%, compared with 1.95% for MUNX.

What is the main difference between MUNX and MYMF?

They also come from different issuers: AMG and State Street. Their fees differ too: 0.29% for MUNX and 0.20% for MYMF.