IBMP vs. AUSM
IBMP (iShares iBonds Dec 2027 Term Muni Bond ETF) and AUSM (Allspring Ultra Short Municipal ETF) are both Municipal Bonds funds. IBMP is passively managed, while AUSM is actively managed. Over the past year, IBMP returned 2.33% vs 2.68% for AUSM. Their 0.05 correlation means their historical movements had little consistent relationship. Both charge a 0.18% expense ratio.
Performance
IBMP vs. AUSM - Performance Comparison
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Returns By Period
In the year-to-date period, IBMP achieves a 1.40% return, which is significantly higher than AUSM's 1.33% return.
IBMP
- 1D
- 0.17%
- 1M
- 0.19%
- 6M
- 0.95%
- YTD
- 1.40%
- 1Y
- 2.33%
- 3Y*
- 3.13%
- 5Y*
- 0.54%
- 10Y*
- —
- ALL TIME*
- 1.92%
AUSM
- 1D
- 0.04%
- 1M
- 0.03%
- 6M
- 0.98%
- YTD
- 1.33%
- 1Y
- 2.68%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
- ALL TIME*
- 2.74%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $83.64K | $57.55K | $107.96K | |
| $2.19M | $2.05M | $2.04M |
IBMP vs. AUSM - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
IBMP iShares iBonds Dec 2027 Term Muni Bond ETF | 1.40% | 1.49% |
AUSM Allspring Ultra Short Municipal ETF | 1.33% | 1.58% |
Correlation
The correlation between IBMP and AUSM is 0.07, meaning there was essentially no consistent relationship between their historical price movements. Each responded to its own set of market drivers.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.07 |
Correlation (All Time) Calculated using the full available price history since Jul 8, 2025 | 0.05 |
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Return for Risk
IBMP vs. AUSM — Risk / Return Rank
IBMP
AUSM
IBMP vs. AUSM - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Dec 2027 Term Muni Bond ETF (IBMP) 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.
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.
| IBMP | AUSM | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.36 | ||
| Sortino ratioReturn per unit of downside risk | -2.66 | ||
| Omega ratioGain probability vs. loss probability | 1.43 | 2.06 | -0.63 |
| Calmar ratioReturn relative to maximum drawdown | 3.95 | 6.43 | -2.48 |
| Martin ratioReturn relative to average drawdown | 10.86 | 18.34 | -7.48 |
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Drawdowns
IBMP vs. AUSM - Drawdown Comparison
The maximum IBMP drawdown since its inception was -15.24%, which is greater than AUSM's maximum drawdown of -0.42%. Use the drawdown chart below to compare losses from any high point for IBMP and AUSM.
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Drawdown Indicators
| IBMP | AUSM | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -15.24% | -0.42% | -14.82% |
Max Drawdown (1Y)Largest decline over 1 year | -0.59% | -0.42% | -0.17% |
Max Drawdown (3Y)Largest decline over 3 years | -1.94% | — | — |
Max Drawdown (5Y)Largest decline over 5 years | -9.97% | — | — |
Current DrawdownCurrent decline from peak | 0.00% | -0.13% | +0.13% |
Average DrawdownAverage peak-to-trough decline | -2.66% | -0.09% | -2.57% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.22% | 0.15% | +0.07% |
Volatility
IBMP vs. AUSM - Volatility Comparison
iShares iBonds Dec 2027 Term Muni Bond ETF (IBMP) has a higher volatility of 0.28% compared to Allspring Ultra Short Municipal ETF (AUSM) at 0.23%. This indicates that IBMP's price experiences larger fluctuations and is considered to be riskier than AUSM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IBMP | AUSM | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.28% | 0.23% | +0.05% |
Volatility (6M)Calculated over the trailing 6-month period | 0.75% | 0.50% | +0.25% |
Volatility (1Y)Calculated over the trailing 1-year period | 1.08% | 0.76% | +0.32% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.55% | 0.74% | +1.81% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.95% | 0.74% | +4.21% |
IBMP vs. AUSM - Expense Ratio Comparison
Both IBMP and AUSM 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
IBMP vs. AUSM - Dividend Comparison
IBMP's dividend yield for the trailing twelve months is around 2.51%, less than AUSM's 2.77% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 |
|---|---|---|---|---|---|---|---|---|
AUSM Allspring Ultra Short Municipal ETF | 2.77% | 1.26% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
IBMP iShares iBonds Dec 2027 Term Muni Bond ETF | 2.51% | 2.47% | 2.35% | 2.05% | 1.26% | 0.86% | 1.16% | 1.06% |
Frequently Asked Questions
IBMP and AUSM have a correlation of 0.07, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
IBMP has higher volatility (0.28%) compared to AUSM (0.23%). In terms of maximum drawdown, IBMP dropped -15.24% vs AUSM's -0.42%.
On 1-year performance, AUSM leads with 2.68% vs 2.33% for IBMP. Both ETFs have the same 0.18% expense ratio. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 1-year period, AUSM has performed better with a 2.68% return vs 2.33%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
IBMP and AUSM have the same expense ratio: 0.18% per year.
AUSM has the higher dividend yield at 2.77%, compared with 2.51% for IBMP.
They also come from different issuers: iShares and Allspring.
AUSM currently has the higher Sharpe Ratio (3.55 vs 2.18), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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