IBMUvsAMUNETF Comparison
VS
iShares iBonds Dec 2032 Term Muni Bond ETF (IBMU) and abrdn Ultra Short Municipal Income Active ETF (AMUN) belong to the same industry segment: Municipal Bonds. Both ETFs have the same top 2 sector exposures: Municipal and Non-Corporate. IBMU is less expensive with a Total Expense Ratio (TER) of 0.1%, versus 0.74% for AMUN. Run a side-by-side ETF comparison of IBMU and AMUN below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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IBMU vs AMUN performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/26/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IBMU AMUN | +4.30%+0.57% | +0.33%+0.59% | n/a+2.22% | n/a+2.78% | n/an/a | n/an/a |
| Flows | IBMU AMUN | +$11M+$6M | +$20M+$8M | -+$31M | -+$31M | -- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IBMU AMUN | +4.78%+0.50% | n/a+0.34% | n/an/a | n/an/a |
| Max drawdown | IBMU AMUN | -4.79%-0.31% | n/a-0.31% | n/an/a | n/an/a |
| Max drawdown duration | IBMU AMUN | 74d36d | n/a36d | n/an/a | n/an/a |
Trading data
IBMU | AMUN | |
Last sale 10/27/2026 at 1:30 PM | $26.04 | |
| Previous close 10/26/2026 | $26.03 | |
| Consolidated volume 10/26/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 30, 2026
1-year trailing difference
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AMUN
is actively managed and doesn’t replicate an indexIBMU | AMUN | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/27/2026 at 1:30 PM
Live
Closed
IBMU | AMUN | |
|---|---|---|
| Last price | – | $26.04 |
| 1D performance | – | +0.04% |
| AuM | $32.36 M | $60.94 M |
| E/R | 0.1% | 0.74% |
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Exposure
Countries
IBMU
USA
26.76%
Other
73.24%
AMUN
USA
27.85%
Other
72.15%
Sectors
IBMU
Municipal
26.21%
Other
73.79%
AMUN
Municipal
27.62%
Other
72.38%
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Diversification
IBMU
Total weight of top 15 holdings out of 15
10.27%
AMUN
Total weight of top 15 holdings out of 15
46.38%
Top 15 holdings
Data as of August 31, 2026
IBMU
California Public Works Board, 5% 1sep2032, USD
1.13%
New York Dormitory Authority, 5% 1oct2032, USD (2023A)
0.98%
US93974EWB81
0.81%
US54641CBJ36
0.77%
US30382ANK42
0.65%
Oklahoma Capitol Improvement Authority, 5% 1jul2032, USD (2026A)
0.64%
US60412AYF47
0.63%
University of Texas, 5% 15aug2034, USD (2023A)
0.62%
City of New York, 6.75% 29jun1990, USD
0.60%
US452227VY47
0.59%
US9151832Q95
0.59%
US546417JN78
0.58%
US386442ZP50
0.57%
US68607DWA98
0.57%
BlackRock Liquidity MuniCash
0.55%
AMUN
US46640KYU23
3.99%
US230589AB90
3.68%
Chandler Industrial Development Authority, 5% 1sep2052, USD (2022-2)
3.66%
Newark, 4.25% 5may2027, USD (2026)
3.64%
US478232SD45
3.64%
US88035TZV50
3.62%
US7386297S79
3.62%
US64972GU289
3.26%
Mississippi Business Finance Corp., FRN 1nov2032, USD (2007A)
2.97%
US414008CX87
2.67%
Main Street Natural Gas Inc., 4% 1may2052, USD
2.59%
US546598AB98
2.54%
PEFA Inc., 5% 1sep2049, USD (2019)
2.27%
US06964KAB26
2.17%
US20774YV531
2.06%
Frequently asked questions about IBMU and AMUN
Which ETF is bigger: IBMU or AMUN?
As of October 26, 2026, IBMU holds $32.36 M in assets under management (AUM), while AMUN manages $60.94 M.
What sectors do the IBMU and AMUN ETFs invest in?
IBMU leans toward sectors like Municipal. Meanwhile, AMUN focuses on Municipal.
What are the top holdings of the IBMU ETF and AMUN ETF?
IBMU top holdings include California Public Works Board, 5% 1sep2032, USD, New York Dormitory Authority, 5% 1oct2032, USD (2023A) and US93974EWB81. AMUN holds in its top three: US46640KYU23, US230589AB90 and Chandler Industrial Development Authority, 5% 1sep2052, USD (2022-2).
Which ETF is more diversified: IBMU or AMUN?
IBMU holds 496 securities with 10.27% of its assets in the top 15. AMUN has 68 securities and a top 15 weight of 46.38%.
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