AUSM vs. IBMT
AUSM (Allspring Ultra Short Municipal ETF) and IBMT (iShares iBonds Dec 2031 Term Muni Bond ETF) are both Municipal Bonds funds. AUSM is actively managed, while IBMT is passively managed. At a 0.09 correlation, their price movements are largely independent. Both charge a 0.18% expense ratio.
Performance
AUSM vs. IBMT - Performance Comparison
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Returns By Period
In the year-to-date period, AUSM achieves a 0.98% return, which is significantly higher than IBMT's 0.19% return.
AUSM
- 1D
- -0.02%
- 1M
- 0.21%
- YTD
- 0.98%
- 6M
- 1.34%
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
IBMT
- 1D
- -0.02%
- 1M
- 0.35%
- YTD
- 0.19%
- 6M
- 0.25%
- 1Y
- 6.34%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
AUSM vs. IBMT - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
AUSM Allspring Ultra Short Municipal ETF | 0.98% | 1.63% |
IBMT iShares iBonds Dec 2031 Term Muni Bond ETF | 0.19% | 3.51% |
Correlation
The correlation between AUSM and IBMT is 0.09, 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 | 0.09 |
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Return for Risk
AUSM vs. IBMT — Risk / Return Rank
AUSM
IBMT
AUSM vs. IBMT - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Allspring Ultra Short Municipal ETF (AUSM) and iShares iBonds Dec 2031 Term Muni Bond ETF (IBMT). 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
| AUSM | IBMT | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | — | 2.05 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 3.98 | 1.63 | +2.35 |
Drawdowns
AUSM vs. IBMT - Drawdown Comparison
The maximum AUSM drawdown since its inception was -0.42%, smaller than the maximum IBMT drawdown of -3.18%. Use the drawdown chart below to compare losses from any high point for AUSM and IBMT.
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Drawdown Indicators
| AUSM | IBMT | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -0.42% | -3.18% | +2.76% |
Max Drawdown (1Y)Largest decline over 1 year | — | -3.10% | — |
Current DrawdownCurrent decline from peak | -0.02% | -1.65% | +1.63% |
Average DrawdownAverage peak-to-trough decline | -0.09% | -0.74% | +0.65% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | — | 1.04% | — |
Volatility
AUSM vs. IBMT - Volatility Comparison
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Volatility by Period
| AUSM | IBMT | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | — | 0.78% | — |
Volatility (6M)Calculated over the trailing 6-month period | — | 2.06% | — |
Volatility (1Y)Calculated over the trailing 1-year period | 0.73% | 3.11% | -2.38% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 0.73% | 3.86% | -3.13% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 0.73% | 3.86% | -3.13% |
AUSM vs. IBMT - Expense Ratio Comparison
Both AUSM and IBMT have an expense ratio of 0.18%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.
Dividends
AUSM vs. IBMT - Dividend Comparison
AUSM's dividend yield for the trailing twelve months is around 2.39%, less than IBMT's 3.65% yield.
| Position | TTM | 2025 |
|---|---|---|
AUSM Allspring Ultra Short Municipal ETF | 2.39% | 1.26% |
IBMT iShares iBonds Dec 2031 Term Muni Bond ETF | 3.65% | 2.98% |
Frequently Asked Questions
AUSM and IBMT have a correlation of 0.09, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
Both ETFs have the same 0.18% expense ratio. The better choice depends on whether you care most about return, fees, risk, or income.
AUSM and IBMT have the same expense ratio: 0.18% per year.
IBMT has the higher dividend yield at 3.65%, compared with 2.39% for AUSM.
They also come from different issuers: Allspring and iShares.
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