MBNE vs. AMUN

Last updated Jun 3, 2026

MBNE (SPDR Nuveen Municipal Bond ESG ETF) and AMUN (abrdn Ultra Short Municipal Income Active ETF) are both Municipal Bonds funds. Both are actively managed. At a 0.12 correlation, their price movements are largely independent. MBNE charges 0.43%/yr vs 0.25%/yr for AMUN.

Performance

MBNE vs. AMUN - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SPDR Nuveen Municipal Bond ESG ETF (MBNE) and abrdn Ultra Short Municipal Income Active ETF (AMUN). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MBNE achieves a 0.84% return, which is significantly lower than AMUN's 1.11% return.

MBNE

• 1D: 0.00%
• 1M: 0.03%
• YTD: 0.84%
• 6M: 1.25%
• 1Y: 4.86%
• 3Y*: 2.97%
• 5Y*: —
• 10Y*: —

AMUN

• 1D: -0.02%
• 1M: 0.32%
• YTD: 1.11%
• 6M: 1.36%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MBNE vs. AMUN - Yearly Performance Comparison

	2026 (YTD)	2025
MBNE SPDR Nuveen Municipal Bond ESG ETF	0.84%	-0.03%
AMUN abrdn Ultra Short Municipal Income Active ETF	1.11%	0.14%

Correlation

The correlation between MBNE and AMUN is 0.12, 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 21, 2025	0.12

Return for Risk

MBNE vs. AMUN — Risk / Return Rank

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

MBNE

MBNE Risk / Return Rank: 48
MBNE Sharpe Ratio Rank: 48
MBNE Sortino Ratio Rank: 48
MBNE Omega Ratio Rank: 58
MBNE Calmar Ratio Rank: 46
MBNE Martin Ratio Rank: 43

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.

MBNE vs. AMUN - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SPDR Nuveen Municipal Bond ESG ETF (MBNE) and abrdn Ultra Short Municipal Income Active ETF (AMUN). 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.

	MBNE	AMUN	Difference
Sharpe ratio Return per unit of total volatility	1.71	—	—
Sortino ratio Return per unit of downside risk	2.40	—	—
Omega ratio Gain probability vs. loss probability	1.36	—	—
Calmar ratio Return relative to maximum drawdown	2.31	—	—
Martin ratio Return relative to average drawdown	7.16	—	—
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

	MBNE	AMUN	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.71	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.63	2.05	-1.42

Drawdowns

MBNE vs. AMUN - Drawdown Comparison

The maximum MBNE drawdown since its inception was -6.19%, which is greater than AMUN's maximum drawdown of -0.61%. Use the drawdown chart below to compare losses from any high point for MBNE and AMUN.

Drawdown Indicators

	MBNE	AMUN	Difference
Max Drawdown Largest peak-to-trough decline	-6.19%	-0.61%	-5.58%
Max Drawdown (1Y) Largest decline over 1 year	-2.02%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-4.98%	—	—
Current Drawdown Current decline from peak	-1.04%	-0.02%	-1.02%
Average Drawdown Average peak-to-trough decline	-1.41%	-0.09%	-1.32%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.65%	—	—

Volatility

Volatility by Period

	MBNE	AMUN	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.42%	—	—
Volatility (6M) Calculated over the trailing 6-month period	2.06%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	2.87%	1.01%	+1.86%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.70%	1.01%	+2.69%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.70%	1.01%	+2.69%

MBNE vs. AMUN - Expense Ratio Comparison

MBNE has a 0.43% expense ratio, which is higher than AMUN's 0.25% expense ratio.

Dividends

MBNE vs. AMUN - Dividend Comparison

MBNE's dividend yield for the trailing twelve months is around 3.15%, more than AMUN's 1.89% yield.

Position	TTM	2025	2024	2023	2022
AMUN abrdn Ultra Short Municipal Income Active ETF	1.89%	0.66%	0.00%	0.00%	0.00%
MBNE SPDR Nuveen Municipal Bond ESG ETF	3.15%	3.63%	3.32%	3.01%	1.81%

Frequently Asked Questions

Can I hold both MBNE and AMUN in my portfolio?

MBNE and AMUN 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 ETF is better, MBNE or AMUN?

On fees, AMUN 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, MBNE or AMUN?

AMUN is cheaper with a 0.25% expense ratio, compared with 0.43% for MBNE.

Which ETF pays a higher dividend yield, MBNE or AMUN?

MBNE has the higher dividend yield at 3.15%, compared with 1.89% for AMUN.

What is the main difference between MBNE and AMUN?

They also come from different issuers: State Street and abrdn. Their fees differ too: 0.43% for MBNE and 0.25% for AMUN.