PWZ vs. AMUN
PWZ (Invesco California AMT-Free Municipal Bond ETF) and AMUN (abrdn Ultra Short Municipal Income Active ETF) are both Municipal Bonds funds. PWZ is passively managed, while AMUN is actively managed. At a 0.26 correlation, their price movements are largely independent. PWZ charges 0.28%/yr vs 0.25%/yr for AMUN.
Performance
PWZ vs. AMUN - Performance Comparison
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Returns By Period
In the year-to-date period, PWZ achieves a 2.63% return, which is significantly higher than AMUN's 1.25% return.
PWZ
- 1D
- -0.16%
- 1M
- 2.02%
- YTD
- 2.63%
- 6M
- 2.63%
- 1Y
- 8.32%
- 3Y*
- 2.91%
- 5Y*
- 0.14%
- 10Y*
- 1.79%
AMUN
- 1D
- 0.04%
- 1M
- 0.30%
- YTD
- 1.25%
- 6M
- 1.32%
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
PWZ vs. AMUN - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
PWZ Invesco California AMT-Free Municipal Bond ETF | 2.63% | 0.12% |
AMUN abrdn Ultra Short Municipal Income Active ETF | 1.25% | 0.14% |
Correlation
The correlation between PWZ and AMUN is 0.26, 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 20, 2025 | 0.26 |
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Return for Risk
PWZ vs. AMUN — Risk / Return Rank
PWZ
AMUN
Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.
PWZ vs. AMUN - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Invesco California AMT-Free Municipal Bond ETF (PWZ) 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.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| PWZ | AMUN | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | — | — | |
| Sortino ratioReturn per unit of downside risk | — | — | |
| Omega ratioGain probability vs. loss probability | 1.40 | — | — |
| Calmar ratioReturn relative to maximum drawdown | 2.41 | — | — |
| Martin ratioReturn relative to average drawdown | 8.70 | — | — |
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Drawdowns
PWZ vs. AMUN - Drawdown Comparison
The maximum PWZ drawdown since its inception was -21.49%, which is greater than AMUN's maximum drawdown of -0.61%. Use the drawdown chart below to compare losses from any high point for PWZ and AMUN.
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Drawdown Indicators
| PWZ | AMUN | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -21.49% | -0.61% | -20.88% |
Max Drawdown (1Y)Largest decline over 1 year | -3.47% | — | — |
Max Drawdown (3Y)Largest decline over 3 years | -9.09% | — | — |
Max Drawdown (5Y)Largest decline over 5 years | -17.56% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -17.56% | — | — |
Current DrawdownCurrent decline from peak | -0.39% | 0.00% | -0.39% |
Average DrawdownAverage peak-to-trough decline | -3.53% | -0.08% | -3.45% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.96% | — | — |
Volatility
PWZ vs. AMUN - Volatility Comparison
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Volatility by Period
| PWZ | AMUN | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.10% | — | — |
Volatility (6M)Calculated over the trailing 6-month period | 3.06% | — | — |
Volatility (1Y)Calculated over the trailing 1-year period | 4.28% | 0.98% | +3.30% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.25% | 0.98% | +5.27% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.89% | 0.98% | +4.91% |
PWZ vs. AMUN - Expense Ratio Comparison
PWZ has a 0.28% expense ratio, which is higher than AMUN's 0.25% expense ratio.
Dividends
PWZ vs. AMUN - Dividend Comparison
PWZ's dividend yield for the trailing twelve months is around 3.61%, more than AMUN's 1.88% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AMUN abrdn Ultra Short Municipal Income Active ETF | 1.88% | 0.66% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
PWZ Invesco California AMT-Free Municipal Bond ETF | 3.61% | 3.41% | 3.28% | 2.84% | 2.49% | 2.28% | 2.34% | 2.51% | 2.53% | 2.48% | 2.86% | 3.16% |
Frequently Asked Questions
PWZ and AMUN have a correlation of 0.26, 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 0.28% for PWZ.
PWZ has the higher dividend yield at 3.61%, compared with 1.88% for AMUN.
They also come from different issuers: Invesco and abrdn. Their fees differ too: 0.28% for PWZ and 0.25% for AMUN.
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