FMUBvsSPMBETF Comparison
VS
ETF 2
SPMB
State Street State Street SPDR Portfolio Mortgage Backed Bond ETF
This fund is part of
MBS & ABS
-0.04%
Fidelity Municipal Bond Opportunities ETF (FMUB) belongs to the Municipal Bonds segment. State Street State Street SPDR Portfolio Mortgage Backed Bond ETF (SPMB) is part of the MBS & ABS segment. FMUB's top 2 sector exposures are Municipal and Non-Corporate. In contrast, SPMB's top sector exposures are Industrials, Finance and Government Agencies. FMUB is more expensive with a Total Expense Ratio (TER) of 0.3%, versus 0.04% for SPMB. FMUB is down -1.19% year-to-date (YTD) with +$148M in YTD flows. SPMB performs worse with -1.82% YTD performance, and +$555M in YTD flows. Run a side-by-side ETF comparison of FMUB 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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FMUB 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. | FMUB SPMB | -0.32%-0.29% | -3.01%-2.37% | -1.19%-1.82% | -0.73%-1.50% | n/a+16.97% | n/a-0.53% |
| Flows | FMUB SPMB | +$44M-$100M | +$62M+$98M | +$148M+$555M | +$164M+$791M | -+$2.45B | -+$3.57B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | FMUB SPMB | +5.00%+5.74% | +3.14%+4.63% | n/a+5.81% | n/a+6.78% |
| Max drawdown | FMUB SPMB | -5.46%-4.41% | -6.03%-5.57% | n/a-5.57% | n/a-17.04% |
| Max drawdown duration | FMUB SPMB | 92d52d | 102d229d | n/a229d | n/a1436d |
Trading data
FMUB | SPMB | |
Last sale 10/16/2026 at 1:30 PM | $49.11 | $21.38 |
| Previous close 10/15/2026 | $49.07 | $21.39 |
| Consolidated volume 10/15/2026 | ||
| 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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FMUB
is actively managed and doesn’t replicate an indexFMUB | 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 10/16/2026 at 1:30 PM
Live
Closed
FMUB | SPMB | |
|---|---|---|
| Last price | $49.11 | $21.38 |
| 1D performance | +0.08% | -0.05% |
| AuM | $288.02 M | $6.87 B |
| E/R | 0.3% | 0.04% |
Characteristics
FMUB | SPMB | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | Fidelity | State Street Investment Management |
| Benchmark | - | Bloomberg U.S. MBS Index |
| N° of holdings | 164 | 566 |
| Asset class | - | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | April 8, 2025 | January 15, 2009 |
| ESG | No | No |
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Exposure
Countries
FMUB
USA
34.21%
Other
65.79%
SPMB
USA
32.14%
Other
67.86%
Sectors
FMUB
Municipal
26.63%
Non-Corporate
7.58%
Other
65.79%
SPMB
Industrials
31.8%
Other
68.2%
Diversification
FMUB
Total weight of top 15 holdings out of 15
18.46%
SPMB
Total weight of top 15 holdings out of 15
9.79%
Top 15 holdings
Data as of August 31, 2026
FMUB
Fidelity Municipal Cash Central Fund
7.58%
US54659LDS07
1.66%
Black Belt Energy Gas District, 5% 1jun2031, USD (2026)
0.91%
US56035DJJ28
0.80%
US23503CFM47
0.76%
US64987KDJ43
0.75%
San Antonio Electric and Gas Systems, FRN 1feb2055, USD (2026A)
0.75%
Florida Housing Finance Corp., 1.8% 1jul2036, USD (2021)
0.75%
US84136HCT86
0.72%
US52349EEY23
0.67%
Black Belt Energy Gas District, 5% 1nov2036, USD (2026)
0.66%
US88256FAU66
0.63%
Black Belt Energy Gas District, 5% 1dec2034, USD (2026)
0.61%
Black Belt Energy Gas District, 5% 1oct2033, USD (2026)
0.61%
University of Kansas Hospital Authority, 5.5% 1mar2054, USD (2026A)
0.60%
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 FMUB and SPMB
How have the FMUB and SPMB ETFs performed in 2026?
As of October 16, 2026, FMUB is down -1.19% year-to-date (YTD), while SPMB has lost -1.82%. That puts FMUB better performer ahead so far this year.
Which ETF is attracting more investor money: FMUB or SPMB?
Year-to-date, the FMUB ETF saw +$148M in flows, compared to +$555M for SPMB.
Which ETF is more volatile: FMUB or SPMB?
Over the past year, FMUB had a volatility of 3.14%, while SPMB experienced 4.63%.
Which ETF is bigger: FMUB or SPMB?
As of October 16, 2026, FMUB holds $288.02 M in assets under management (AUM), while SPMB manages $6.87 B.
What sectors do the FMUB and SPMB ETFs invest in?
FMUB leans toward sectors like Municipal and Non-Corporate. Meanwhile, SPMB focuses on Industrials.
What are the top holdings of the FMUB ETF and SPMB ETF?
FMUB top holdings include Fidelity Municipal Cash Central Fund, US54659LDS07 and Black Belt Energy Gas District, 5% 1jun2031, USD (2026). SPMB holds in its top three: US01F0526982, US3142J6C840 and US01F0506927.
Which ETF is more diversified: FMUB or SPMB?
FMUB holds 563 securities with 18.46% of its assets in the top 15. SPMB has 2738 securities and a top 15 weight of 9.79%.
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