TAXXvsSPMBETF Comparison
VS
ETF 2
SPMB
State Street State Street SPDR Portfolio Mortgage Backed Bond ETF
This fund is part of
MBS & ABS
-0.03%
BondBloxx IR+M Tax Aware Short Duration ETF (TAXX) belongs to the US Aggregate Bonds segment. State Street State Street SPDR Portfolio Mortgage Backed Bond ETF (SPMB) is part of the MBS & ABS segment. TAXX's top 3 sector exposures are Municipal, Finance and Industrials. In contrast, SPMB's top sector exposures are Industrials, Finance and Government Agencies. TAXX is more expensive with a Total Expense Ratio (TER) of 0.35%, versus 0.04% for SPMB. TAXX is up 1.25% year-to-date (YTD) with +$42M in YTD flows. SPMB performs worse with -1.82% YTD performance, and +$555M in YTD flows. Run a side-by-side ETF comparison of TAXX 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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TAXX 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. | TAXX SPMB | +0.03%-0.29% | -0.20%-2.37% | +1.25%-1.82% | +1.83%-1.50% | n/a+16.97% | n/a-0.53% |
| Flows | TAXX SPMB | -$5M-$100M | -$15M+$98M | +$42M+$555M | +$74M+$791M | -+$2.45B | -+$3.57B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | TAXX SPMB | +1.44%+5.74% | +0.93%+4.63% | n/a+5.81% | n/a+6.78% |
| Max drawdown | TAXX SPMB | -1.38%-4.41% | -1.38%-5.57% | n/a-5.57% | n/a-17.04% |
| Max drawdown duration | TAXX SPMB | 52d52d | 52d229d | n/a229d | n/a1436d |
Trading data
TAXX | SPMB | |
Last sale 10/19/2026 at 1:30 PM | $50.03 | $21.30 |
| Previous close 10/16/2026 | $50.08 | $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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TAXX
is actively managed and doesn’t replicate an indexTAXX | 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 1:30 PM
Live
Closed
TAXX | SPMB | |
|---|---|---|
| Last price | $50.03 | $21.30 |
| 1D performance | -0.09% | -0.37% |
| AuM | $279.18 M | $6.87 B |
| E/R | 0.35% | 0.04% |
Characteristics
TAXX | SPMB | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | Bondbloxx Investment Management LLC | State Street Investment Management |
| Benchmark | - | Bloomberg U.S. MBS Index |
| N° of holdings | 107 | 566 |
| Asset class | - | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | March 14, 2024 | January 15, 2009 |
| ESG | No | No |
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Exposure
Countries
TAXX
USA
33.1%
Other
66.9%
SPMB
USA
32.14%
Other
67.86%
Sectors
TAXX
Municipal
23.42%
Finance
7.4%
Other
69.19%
SPMB
Industrials
31.8%
Other
68.2%
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Diversification
TAXX
Total weight of top 15 holdings out of 15
17.88%
SPMB
Total weight of top 15 holdings out of 15
9.79%
Top 15 holdings
Data as of August 31, 2026
TAXX
US79625GNV13
1.91%
New York Transitional Finance Authority, 5% 15jul2034, USD (2018)
1.60%
Texas Municipal Gas Acquisition and Supply Corp., 5.5% 1jan2054, USD (2023A)
1.28%
US806640Q929
1.27%
US718903RV17
1.26%
US04785VCF94
1.19%
Fort Bend Independent School District, FRN 1aug2056, USD (2026B)
1.12%
US45470YGD76
1.08%
Harris Municipal Utility District №165, 4% 1mar2032, USD (2022)
1.06%
Dickson Health and Educational Facilities, 3.05% 1apr2044, USD (2026)
1.05%
US51766AAS33
1.04%
US61781CAC47
1.03%
Illinois Toll Highway Authority, 5% 1jan2039, USD
1.01%
US39081JMQ84
0.99%
Issaquah School District №411, 4% 1dec2031, USD
0.99%
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 TAXX and SPMB
How have the TAXX and SPMB ETFs performed in 2026?
As of October 16, 2026, TAXX is up 1.25% year-to-date (YTD), while SPMB has lost -1.82%. That puts TAXX better performer ahead so far this year.
Which ETF is attracting more investor money: TAXX or SPMB?
Year-to-date, the TAXX ETF saw +$42M in flows, compared to +$555M for SPMB.
Which ETF is more volatile: TAXX or SPMB?
Over the past year, TAXX had a volatility of 0.93%, while SPMB experienced 4.63%.
Which ETF is bigger: TAXX or SPMB?
As of October 16, 2026, TAXX holds $279.18 M in assets under management (AUM), while SPMB manages $6.87 B.
What sectors do the TAXX and SPMB ETFs invest in?
TAXX leans toward sectors like Municipal and Finance. Meanwhile, SPMB focuses on Industrials.
What are the top holdings of the TAXX ETF and SPMB ETF?
TAXX top holdings include US79625GNV13, New York Transitional Finance Authority, 5% 15jul2034, USD (2018) and Texas Municipal Gas Acquisition and Supply Corp., 5.5% 1jan2054, USD (2023A). SPMB holds in its top three: US01F0526982, US3142J6C840 and US01F0506927.
Which ETF is more diversified: TAXX or SPMB?
TAXX holds 298 securities with 17.88% of its assets in the top 15. SPMB has 2738 securities and a top 15 weight of 9.79%.
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