IBMUvsVMBSETF Comparison
VS
iShares iBonds Dec 2032 Term Muni Bond ETF (IBMU) belongs to the Municipal Bonds segment. Vanguard Mortgage-Backed Securities ETF (VMBS) is part of the MBS & ABS segment. IBMU's top 2 sector exposures are Municipal and Non-Corporate. In contrast, VMBS's top sector exposures are Industrials, Finance and Government Agencies. IBMU is more expensive with a Total Expense Ratio (TER) of 0.1%, versus 0.03% for VMBS. Run a side-by-side ETF comparison of IBMU and VMBS 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 VMBS performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/28/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IBMU VMBS | +4.32%+2.01% | +0.23%-1.30% | n/a-1.38% | n/a-1.27% | n/a+19.06% | n/a+0.61% |
| Flows | IBMU VMBS | +$13M+$296M | +$21M+$866M | -+$1.84B | -+$1.95B | --$1.37B | -+$3.15B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IBMU VMBS | +4.74%+5.65% | n/a+4.39% | n/a+5.32% | n/a+6.51% |
| Max drawdown | IBMU VMBS | -4.79%-4.22% | n/a-5.75% | n/a-5.75% | n/a-16.74% |
| Max drawdown duration | IBMU VMBS | 76d64d | n/a241d | n/a241d | n/a1398d |
Trading data
IBMU | VMBS | |
Last sale 10/29/2026 at 1:30 PM | $45.44 | |
| Previous close 10/28/2026 | $45.25 | |
| Consolidated volume 10/28/2026 | ||
| 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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IBMU | VMBS | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
Main metrics
Last update 10/29/2026 at 1:30 PM
Live
Closed
IBMU | VMBS | |
|---|---|---|
| Last price | – | $45.44 |
| 1D performance | – | +0.42% |
| AuM | $34.86 M | $16.09 B |
| E/R | 0.1% | 0.03% |
Characteristics
IBMU | VMBS | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | iShares | Vanguard |
| Benchmark | S&P AMT-Free Municipal Series Callable-Adjusted 2032 Index | Bloomberg U.S. MBS Float Adjusted Index |
| N° of holdings | 123 | 698 |
| Asset class | - | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | March 25, 2026 | November 19, 2009 |
| ESG | No | No |
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Exposure
Countries
IBMU
USA
26.76%
Other
73.24%
VMBS
USA
26.03%
Other
73.97%
Sectors
IBMU
Municipal
26.21%
Other
73.79%
VMBS
Industrials
25.62%
Other
74.38%
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Diversification
IBMU
Total weight of top 15 holdings out of 15
10.27%
VMBS
Total weight of top 15 holdings out of 15
3.67%
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%
VMBS
G2 MB0025, 5% 20nov2054, USD (ABS)
0.28%
US3618N56H72
0.28%
US3618N6K636
0.26%
US3618N6BE68
0.26%
US3140Y9B864
0.26%
G2 MB0024, 4.5% 20nov2054, USD (ABS)
0.25%
US21H0606A46
0.25%
US3132E0TL66
0.25%
US3142J6DY61
0.24%
US3618N6HU47
0.23%
FR SD8146, 2% 1may2051, USD (ABS)
0.23%
US3618N6FL65
0.23%
US01F0526982
0.22%
US3142J6C840
0.22%
FR RQ0056, 5.5% 1oct2055, USD (ABS)
0.21%
Frequently asked questions about IBMU and VMBS
Which ETF is bigger: IBMU or VMBS?
As of October 28, 2026, IBMU holds $34.86 M in assets under management (AUM), while VMBS manages $16.09 B.
What sectors do the IBMU and VMBS ETFs invest in?
IBMU leans toward sectors like Municipal. Meanwhile, VMBS focuses on Industrials.
What are the top holdings of the IBMU ETF and VMBS ETF?
IBMU top holdings include California Public Works Board, 5% 1sep2032, USD, New York Dormitory Authority, 5% 1oct2032, USD (2023A) and US93974EWB81. VMBS holds in its top three: G2 MB0025, 5% 20nov2054, USD (ABS), US3618N56H72 and US3618N6K636.
Which ETF is more diversified: IBMU or VMBS?
IBMU holds 496 securities with 10.27% of its assets in the top 15. VMBS has 4834 securities and a top 15 weight of 3.67%.
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