IBMSvsSPMBETF Comparison
VS
ETF 2
SPMB
State Street State Street SPDR Portfolio Mortgage Backed Bond ETF
This fund is part of
MBS & ABS
-0.03%
iShares iBonds Dec 2030 Term Muni Bond ETF (IBMS) belongs to the Municipal Bonds segment. State Street State Street SPDR Portfolio Mortgage Backed Bond ETF (SPMB) is part of the MBS & ABS segment. IBMS's top 2 sector exposures are Municipal and Non-Corporate. In contrast, SPMB's top sector exposures are Industrials, Finance and Government Agencies. IBMS is more expensive with a Total Expense Ratio (TER) of 0.1%, versus 0.04% for SPMB. IBMS is down -0.76% year-to-date (YTD) with +$144M in YTD flows. SPMB performs worse with -1.82% YTD performance, and +$555M in YTD flows. Run a side-by-side ETF comparison of IBMS and SPMB 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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IBMS vs SPMB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/16/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IBMS SPMB | +0.03%-0.29% | -1.15%-2.37% | -0.76%-1.82% | -0.31%-1.50% | n/a+16.97% | n/a-0.53% |
| Flows | IBMS SPMB | +$19M-$100M | +$56M+$98M | +$144M+$555M | +$218M+$791M | -+$2.45B | -+$3.57B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IBMS SPMB | +3.22%+5.74% | +2.08%+4.63% | n/a+5.81% | n/a+6.78% |
| Max drawdown | IBMS SPMB | -3.36%-4.41% | -4.36%-5.57% | n/a-5.57% | n/a-17.04% |
| Max drawdown duration | IBMS SPMB | 64d52d | 232d229d | n/a229d | n/a1436d |
Trading data
IBMS | SPMB | |
Last sale 10/19/2026 at 5:58 PM | $25.35 | $21.30 |
| Previous close 10/16/2026 | $25.35 | $21.38 |
| Consolidated volume 10/16/2026 | ||
| 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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IBMS | SPMB | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/19/2026 at 5:58 PM
Live
Closed
IBMS | SPMB | |
|---|---|---|
| Last price | $25.35 | $21.30 |
| 1D performance | +0.00% | -0.40% |
| AuM | $363.12 M | $6.87 B |
| E/R | 0.1% | 0.04% |
Characteristics
IBMS | SPMB | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | iShares | State Street Investment Management |
| Benchmark | S&P AMT-Free Municipal Series Callable-Adjusted 2030 Index | Bloomberg U.S. MBS Index |
| N° of holdings | 491 | 566 |
| Asset class | - | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | May 22, 2024 | January 15, 2009 |
| ESG | No | No |
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Exposure
Countries
IBMS
USA
33.92%
Other
66.08%
SPMB
USA
32.14%
Other
67.86%
Sectors
IBMS
Municipal
32.72%
Other
67.28%
SPMB
Industrials
31.8%
Other
68.2%
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Diversification
IBMS
Total weight of top 15 holdings out of 15
7.34%
SPMB
Total weight of top 15 holdings out of 15
9.79%
Top 15 holdings
Data as of August 31, 2026
IBMS
BlackRock Liquidity MuniCash
1.20%
New Jersey, 4% 1jun2030, USD
0.74%
US79625GNF62
0.59%
New York Metropolitan Transportation Authority, 5% 15nov2045, USD (2015A-2)
0.54%
US91412HWB58
0.49%
Connecticut Health and Educational Facilities Authority, 5% 1jul2064, USD (2025B-1)
0.47%
California, 5% 1nov2030, USD
0.42%
US544647MT41
0.40%
US03843TAY73
0.40%
US544647HM52
0.38%
US618024BT98
0.36%
Alabama Public School and College Authority, 5% 1nov2032, USD (2020-A)
0.36%
US419794B842
0.35%
Missouri Highways and Transportation Commission, 5% 1may2030, USD (2022)
0.32%
US39081HHV78
0.32%
SPMB
US01F0526982
1.22%
US3142J6C840
1.13%
US01F0506927
0.95%
FN MA4547, 2% 1feb2052, USD (ABS)
0.76%
US3142J6BK85
0.73%
FR SD8212, 2.5% 1may2052, USD (ABS)
0.59%
US01F0606917
0.58%
US21H0526945
0.53%
US3132DWMY65
0.53%
G2 MB0424, 5.5% 20jun2055, USD (ABS)
0.52%
FN MA4701, 4.5% 1aug2052, USD (ABS)
0.49%
FN FA0608, 5.5% 1feb2055, USD (ABS)
0.47%
FN MA4465, 2% 1nov2051, USD (ABS)
0.45%
FR SD8193, 2% 1feb2052, USD (ABS)
0.43%
FN FS2040, 2% 1feb2052, USD (ABS)
0.43%
Frequently asked questions about IBMS and SPMB
How have the IBMS and SPMB ETFs performed in 2026?
As of October 16, 2026, IBMS is down -0.76% year-to-date (YTD), while SPMB has lost -1.82%. That puts IBMS better performer ahead so far this year.
Which ETF is attracting more investor money: IBMS or SPMB?
Year-to-date, the IBMS ETF saw +$144M in flows, compared to +$555M for SPMB.
Which ETF is more volatile: IBMS or SPMB?
Over the past year, IBMS had a volatility of 2.08%, while SPMB experienced 4.63%.
Which ETF is bigger: IBMS or SPMB?
As of October 16, 2026, IBMS holds $363.12 M in assets under management (AUM), while SPMB manages $6.87 B.
What sectors do the IBMS and SPMB ETFs invest in?
IBMS leans toward sectors like Municipal. Meanwhile, SPMB focuses on Industrials.
What are the top holdings of the IBMS ETF and SPMB ETF?
IBMS top holdings include BlackRock Liquidity MuniCash, New Jersey, 4% 1jun2030, USD and US79625GNF62. SPMB holds in its top three: US01F0526982, US3142J6C840 and US01F0506927.
Which ETF is more diversified: IBMS or SPMB?
IBMS holds 1769 securities with 7.34% of its assets in the top 15. SPMB has 2738 securities and a top 15 weight of 9.79%.
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