BSMYvsMBBETF Comparison
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Invesco BulletShares 2034 Municipal Bond ETF (BSMY) belongs to the Municipal Bonds segment. iShares MBS ETF (MBB) is part of the MBS & ABS segment. BSMY's top 1 sector exposures are Municipal. In contrast, MBB's top sector exposures are Industrials, Non-Corporate and Finance. BSMY is more expensive with a Total Expense Ratio (TER) of 0.18%, versus 0.04% for MBB. BSMY is down -3.63% year-to-date (YTD) with +$67M in YTD flows. MBB performs better with -2.24% YTD performance, and -$1.13B in YTD flows. Run a side-by-side ETF comparison of BSMY and MBB 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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BSMY vs MBB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/14/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | BSMY MBB | -1.26%-0.88% | -5.00%-2.69% | -3.63%-2.24% | -2.44%-1.59% | n/a+16.48% | n/a-1.08% |
| Flows | BSMY MBB | +$14M-$2.65B | +$21M-$2.00B | +$67M-$1.13B | +$89M-$4.39B | -+$9.63B | -+$14.72B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | BSMY MBB | +5.62%+5.61% | +3.68%+4.59% | n/a+5.73% | n/a+6.66% |
| Max drawdown | BSMY MBB | -7.04%-4.27% | -7.85%-5.38% | n/a-5.38% | n/a-16.94% |
| Max drawdown duration | BSMY MBB | 92d50d | 227d227d | n/a227d | n/a1405d |
Trading data
BSMY | MBB | |
Last sale 10/15/2026 at 1:30 PM | $23.26 | $90.58 |
| Previous close 10/14/2026 | $23.00 | $90.00 |
| Consolidated volume 10/14/2026 | ||
| 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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BSMY | MBB | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/15/2026 at 1:30 PM
Live
Closed
BSMY | MBB | |
|---|---|---|
| Last price | $23.26 | $90.58 |
| 1D performance | +1.15% | +0.64% |
| AuM | $151.78 M | $35.76 B |
| E/R | 0.18% | 0.04% |
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Exposure
Countries
BSMY
USA
29.17%
Other
70.83%
MBB
USA
28.44%
Other
71.56%
Sectors
BSMY
Municipal
29.17%
Other
70.83%
MBB
Industrials
20.61%
Non-Corporate
7.6%
Other
71.79%
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Diversification
BSMY
Total weight of top 15 holdings out of 15
5.69%
MBB
Total weight of top 15 holdings out of 15
16.82%
Top 15 holdings
Data as of August 31, 2026
BSMY
New York Dormitory Authority, 5.5% 1jul2054, USD (2024A)
0.61%
Triborough Bridge and Tunnel Authority, 5.25% 15may2064, USD (2024A-1)
0.52%
Los Angeles Unified School District, 5% 1jul2034, USD (2024A)
0.50%
New York Municipal Water Finance Authority, 5.25% 15jun2053, USD (2025)
0.44%
Massachusetts, 5% 1jan2054, USD (2024)
0.44%
Triborough Bridge and Tunnel Authority, 3% 15nov2034, USD
0.40%
University of Missouri System Facilities, 5% 1nov2034, USD (2024)
0.40%
South Carolina Public Service Authority, 5.25% 1dec2054, USD (2024)
0.35%
US64972JGW27
0.31%
US89602HHH30
0.30%
North Carolina Turnpike Authority, 5% 1jan2058, USD (2024A)
0.29%
US59260XCG16
0.28%
US65000B8S01
0.28%
US97705MJ897
0.28%
US57584Y7K96
0.27%
MBB
BlackRock Cash Funds - Institutional
7.60%
US01F0526982
1.26%
US21H0526945
1.05%
FR SD8146, 2% 1may2051, USD (ABS)
0.98%
US01F0506927
0.87%
US21H0606978
0.63%
G2 MB0025, 5% 20nov2054, USD (ABS)
0.55%
US21H0506988
0.55%
G2 MA7648, 2% 20oct2051, USD (ABS)
0.51%
US36179WTX64
0.50%
FN MA4492, 2% 1dec2051, USD (ABS)
0.49%
US36179WJR07
0.48%
US21H0426955
0.48%
FR SD8140, 2% 1apr2051, USD (ABS)
0.47%
FN MA4465, 2% 1nov2051, USD (ABS)
0.42%
Frequently asked questions about BSMY and MBB
How have the BSMY and MBB ETFs performed in 2026?
As of October 14, 2026, BSMY is down -3.63% year-to-date (YTD), while MBB has lost -2.24%. That puts MBB better performer ahead so far this year.
Which ETF is attracting more investor money: BSMY or MBB?
Year-to-date, the BSMY ETF saw +$67M in flows, compared to -$1.13B for MBB.
Which ETF is more volatile: BSMY or MBB?
Over the past year, BSMY had a volatility of 3.68%, while MBB experienced 4.59%.
Which ETF is bigger: BSMY or MBB?
As of October 14, 2026, BSMY holds $151.78 M in assets under management (AUM), while MBB manages $35.76 B.
What sectors do the BSMY and MBB ETFs invest in?
BSMY leans toward sectors like Municipal. Meanwhile, MBB focuses on Industrials and Non-Corporate.
What are the top holdings of the BSMY ETF and MBB ETF?
BSMY top holdings include New York Dormitory Authority, 5.5% 1jul2054, USD (2024A), Triborough Bridge and Tunnel Authority, 5.25% 15may2064, USD (2024A-1) and Los Angeles Unified School District, 5% 1jul2034, USD (2024A). MBB holds in its top three: BlackRock Cash Funds - Institutional, US01F0526982 and US21H0526945.
Which ETF is more diversified: BSMY or MBB?
BSMY holds 1972 securities with 5.69% of its assets in the top 15. MBB has 9405 securities and a top 15 weight of 16.82%.
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Latest news about BSMY & MBB
The Weekly ETF Market Monitor (September 28-October 2, 2026)
October 2, 2026
MBB
NYSE x ETF Central ETF Education Series
March 5, 2024
MBB
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