AMUN vs. ZTAX
AMUN (abrdn Ultra Short Municipal Income Active ETF) and ZTAX (X-Square Municipal Income Tax Free ETF) are both Municipal Bonds funds. Both are actively managed. At a correlation of -0.18, they often move in opposite directions. AMUN charges 0.25%/yr vs 1.14%/yr for ZTAX.
Performance
AMUN vs. ZTAX - Performance Comparison
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Returns By Period
In the year-to-date period, AMUN achieves a 1.11% return, which is significantly higher than ZTAX's 0.20% return.
AMUN
- 1D
- -0.02%
- 1M
- 0.32%
- YTD
- 1.11%
- 6M
- 1.36%
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
ZTAX
- 1D
- 0.00%
- 1M
- -1.80%
- YTD
- 0.20%
- 6M
- 5.42%
- 1Y
- 6.21%
- 3Y*
- 4.56%
- 5Y*
- —
- 10Y*
- —
AMUN vs. ZTAX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
AMUN abrdn Ultra Short Municipal Income Active ETF | 1.11% | 0.14% |
ZTAX X-Square Municipal Income Tax Free ETF | 0.20% | 4.08% |
Correlation
The correlation between AMUN and ZTAX is -0.18, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.
| Correlation | |
|---|---|
Correlation (All Time) Calculated using the full available price history since Oct 21, 2025 | -0.18 |
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Return for Risk
AMUN vs. ZTAX — Risk / Return Rank
AMUN
ZTAX
AMUN vs. ZTAX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for abrdn Ultra Short Municipal Income Active ETF (AMUN) and X-Square Municipal Income Tax Free ETF (ZTAX). 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.
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Sharpe Ratios by Period
| AMUN | ZTAX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | — | 0.24 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 2.05 | 0.20 | +1.85 |
Drawdowns
AMUN vs. ZTAX - Drawdown Comparison
The maximum AMUN drawdown since its inception was -0.61%, smaller than the maximum ZTAX drawdown of -15.33%. Use the drawdown chart below to compare losses from any high point for AMUN and ZTAX.
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Drawdown Indicators
| AMUN | ZTAX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -0.61% | -15.33% | +14.72% |
Max Drawdown (1Y)Largest decline over 1 year | — | -10.47% | — |
Max Drawdown (3Y)Largest decline over 3 years | — | -15.33% | — |
Current DrawdownCurrent decline from peak | -0.02% | -6.58% | +6.56% |
Average DrawdownAverage peak-to-trough decline | -0.09% | -6.81% | +6.72% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | — | 4.22% | — |
Volatility
AMUN vs. ZTAX - Volatility Comparison
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Volatility by Period
| AMUN | ZTAX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | — | 4.07% | — |
Volatility (6M)Calculated over the trailing 6-month period | — | 21.96% | — |
Volatility (1Y)Calculated over the trailing 1-year period | 1.01% | 26.32% | -25.31% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 1.01% | 26.84% | -25.83% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 1.01% | 26.84% | -25.83% |
AMUN vs. ZTAX - Expense Ratio Comparison
AMUN has a 0.25% expense ratio, which is lower than ZTAX's 1.14% expense ratio.
Dividends
AMUN vs. ZTAX - Dividend Comparison
AMUN's dividend yield for the trailing twelve months is around 1.89%, less than ZTAX's 4.56% yield.
| Position | TTM | 2025 | 2024 | 2023 |
|---|---|---|---|---|
AMUN abrdn Ultra Short Municipal Income Active ETF | 1.89% | 0.66% | 0.00% | 0.00% |
ZTAX X-Square Municipal Income Tax Free ETF | 4.56% | 4.58% | 4.55% | 2.14% |
Frequently Asked Questions
AMUN and ZTAX have a correlation of -0.18, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
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.
AMUN is cheaper with a 0.25% expense ratio, compared with 1.14% for ZTAX.
ZTAX has the higher dividend yield at 4.56%, compared with 1.89% for AMUN.
They also come from different issuers: abrdn and X-Square. Their fees differ too: 0.25% for AMUN and 1.14% for ZTAX.
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