BAB vs. AUSM
BAB (Invesco Taxable Municipal Bond ETF) and AUSM (Allspring Ultra Short Municipal ETF) are both Municipal Bonds funds. BAB is passively managed, while AUSM is actively managed. At a correlation of -0.01, they often move in opposite directions. BAB charges 0.28%/yr vs 0.18%/yr for AUSM.
Performance
BAB vs. AUSM - Performance Comparison
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Returns By Period
In the year-to-date period, BAB achieves a 0.12% return, which is significantly lower than AUSM's 0.98% return.
BAB
- 1D
- 0.00%
- 1M
- 0.33%
- YTD
- 0.12%
- 6M
- -0.01%
- 1Y
- 7.16%
- 3Y*
- 4.42%
- 5Y*
- -0.38%
- 10Y*
- 2.24%
AUSM
- 1D
- -0.02%
- 1M
- 0.21%
- YTD
- 0.98%
- 6M
- 1.34%
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
BAB vs. AUSM - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
BAB Invesco Taxable Municipal Bond ETF | 0.12% | 5.53% |
AUSM Allspring Ultra Short Municipal ETF | 0.98% | 1.63% |
Correlation
The correlation between BAB and AUSM is -0.01, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (All Time) Calculated using the full available price history since Jul 9, 2025 | -0.01 |
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Return for Risk
BAB vs. AUSM — Risk / Return Rank
BAB
AUSM
BAB vs. AUSM - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Invesco Taxable Municipal Bond ETF (BAB) and Allspring Ultra Short Municipal ETF (AUSM). 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.
| BAB | AUSM | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | — | — | |
| Sortino ratioReturn per unit of downside risk | — | — | |
| Omega ratioGain probability vs. loss probability | 1.22 | — | — |
| Calmar ratioReturn relative to maximum drawdown | 1.73 | — | — |
| Martin ratioReturn relative to average drawdown | 4.93 | — | — |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| BAB | AUSM | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.24 | — | — |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.05 | — | — |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.23 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.52 | 3.98 | -3.46 |
Drawdowns
BAB vs. AUSM - Drawdown Comparison
The maximum BAB drawdown since its inception was -27.80%, which is greater than AUSM's maximum drawdown of -0.42%. Use the drawdown chart below to compare losses from any high point for BAB and AUSM.
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Drawdown Indicators
| BAB | AUSM | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -27.80% | -0.42% | -27.38% |
Max Drawdown (1Y)Largest decline over 1 year | -4.15% | — | — |
Max Drawdown (3Y)Largest decline over 3 years | -7.57% | — | — |
Max Drawdown (5Y)Largest decline over 5 years | -24.95% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -27.80% | — | — |
Current DrawdownCurrent decline from peak | -5.64% | -0.02% | -5.62% |
Average DrawdownAverage peak-to-trough decline | -5.31% | -0.09% | -5.22% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.46% | — | — |
Volatility
BAB vs. AUSM - Volatility Comparison
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Volatility by Period
| BAB | AUSM | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.72% | — | — |
Volatility (6M)Calculated over the trailing 6-month period | 3.78% | — | — |
Volatility (1Y)Calculated over the trailing 1-year period | 5.80% | 0.73% | +5.07% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 8.33% | 0.73% | +7.60% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 9.69% | 0.73% | +8.96% |
BAB vs. AUSM - Expense Ratio Comparison
BAB has a 0.28% expense ratio, which is higher than AUSM's 0.18% expense ratio.
Dividends
BAB vs. AUSM - Dividend Comparison
BAB's dividend yield for the trailing twelve months is around 4.10%, more than AUSM's 2.39% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AUSM Allspring Ultra Short Municipal ETF | 2.39% | 1.26% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
BAB Invesco Taxable Municipal Bond ETF | 4.10% | 3.96% | 3.97% | 3.65% | 3.40% | 2.63% | 2.96% | 3.77% | 4.20% | 3.96% | 4.26% | 4.71% |
Frequently Asked Questions
BAB and AUSM have a correlation of -0.01, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, AUSM is cheaper at 0.18% per year. The better choice depends on whether you care most about return, fees, risk, or income.
AUSM is cheaper with a 0.18% expense ratio, compared with 0.28% for BAB.
BAB has the higher dividend yield at 4.10%, compared with 2.39% for AUSM.
They also come from different issuers: Invesco and Allspring. Their fees differ too: 0.28% for BAB and 0.18% for AUSM.
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