MUBvsNMBETF Comparison
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iShares National Muni Bond ETF (MUB) belongs to the Municipal Bonds segment. Simplify National Muni Bond ETF (NMB) is part of the Options Strategies segment. MUB's top 2 sector exposures are Municipal and Non-Corporate. In contrast, NMB's top sector exposures are Municipal. MUB is less expensive with a Total Expense Ratio (TER) of 0.05%, versus 0.52% for NMB. MUB is down -0.5% year-to-date (YTD) with +$4.90B in YTD flows. NMB performs worse with -0.54% YTD performance, and +$4M in YTD flows. Run a side-by-side ETF comparison of MUB and NMB 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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MUB vs NMB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/08/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MUB NMB | -1.42%-1.87% | -1.88%-1.80% | -0.50%-0.54% | +1.97%+2.22% | +5.47%n/a | -1.15%n/a |
| Flows | MUB NMB | +$187M+$615K | +$1.26B+$2M | +$4.90B+$4M | +$6.78B+$2M | +$12.77B- | +$24.81B- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MUB NMB | +2.54%+3.54% | +2.31%+4.51% | +3.55%n/a | +3.43%n/a |
| Max drawdown | MUB NMB | -2.48%-3.09% | -2.59%-5.33% | -5.81%n/a | -11.55%n/a |
| Max drawdown duration | MUB NMB | 64d64d | 122d315d | 349dn/a | 1488dn/a |
Trading data
MUB | NMB | |
Last sale 9/9/2026 at 1:30 PM | $103.48 | $23.80 |
| Previous close 09/09/2026 | $104.02 | $24.04 |
| Consolidated volume 09/09/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 10, 2026
1-year trailing difference
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NMB
is actively managed and doesn’t replicate an indexMUB | NMB | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/9/2026 at 1:30 PM
Live
Closed
MUB | NMB | |
|---|---|---|
| Last price | $103.48 | $23.80 |
| 1D performance | -0.52% | -1.00% |
| AuM | $45.23 B | $48.10 M |
| E/R | 0.05% | 0.52% |
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Exposure
Countries
MUB
USA
58.61%
Other
41.39%
NMB
USA
54.36%
Other
45.64%
Sectors
MUB
Municipal
58.23%
Other
41.77%
NMB
Municipal
54.36%
Other
45.64%
Diversification
MUB
Total weight of top 15 holdings out of 15
2.21%
NMB
Total weight of top 15 holdings out of 15
53.67%
Top 15 holdings
Data as of July 31, 2026
MUB
BlackRock Liquidity MuniCash
0.38%
University of Texas, 5% 15aug2036, USD (2025B)
0.19%
US650028ZA41
0.15%
US79642GTU66
0.14%
US89602RPH20
0.13%
Northwest Independent School District, 5.25% 15feb2055, USD (2025)
0.13%
New York Dormitory Authority, 4% 15feb2047, USD (2019D)
0.13%
Houston Higher Education Finance Corp., 5% 15may2034, USD (2024)
0.13%
New Jersey, 5% 1jun2028, USD
0.12%
Ohio State University, 5% 1jun2035, USD (2026)
0.12%
California, 5% 1sep2031, USD
0.12%
US93974EVY93
0.12%
Chicago Transit Authority, 5% 1dec2049, USD (2024A)
0.11%
East AWP Joint Powers Authority, 3.125% 1sep2026, USD (2024A)
0.11%
US812643ZK32
0.11%
NMB
US43233KAW45
4.39%
Salt River Project Agricultural Improvement and Power District, 5.25% 1jan2055, USD (2025)
4.37%
US93974FJY07
4.32%
Jacksonville Aviation Authority, 5.25% 1oct2055, USD (2026)
4.22%
Aldine Independent School District, 4.375% 15feb2051, USD (2026)
3.99%
Midlothian Independent School District, 4.375% 15feb2056, USD (2026)
3.40%
US60637AA360
3.27%
Lee, 5.5% 1oct2051, USD (2026A-1)
3.27%
San Francisco Airport Commission, 5.5% 1may2055, USD (2025D)
3.27%
US46613SUP37
3.23%
Austin, 5.25% 15nov2051, USD (2026B)
3.20%
New Jersey Transportation Trust Fund Authority, 5% 15jun2050, USD (2025)
3.19%
US6500093S07
3.19%
Omaha Public Power District, 5% 1feb2056, USD (2026)
3.18%
US3730643H50
3.17%
Frequently asked questions about MUB and NMB
How have the MUB and NMB ETFs performed in 2026?
As of September 8, 2026, MUB is down -0.5% year-to-date (YTD), while NMB has lost -0.54%. That puts MUB better performer ahead so far this year.
Which ETF is attracting more investor money: MUB or NMB?
Year-to-date, the MUB ETF saw +$4.90B in flows, compared to +$4M for NMB.
Which ETF is more volatile: MUB or NMB?
Over the past year, MUB had a volatility of 2.31%, while NMB experienced 4.51%.
Which ETF is bigger: MUB or NMB?
As of September 8, 2026, MUB holds $45.23 B in assets under management (AUM), while NMB manages $48.10 M.
What sectors do the MUB and NMB ETFs invest in?
MUB leans toward sectors like Municipal. Meanwhile, NMB focuses on Municipal.
What are the top holdings of the MUB ETF and NMB ETF?
MUB top holdings include BlackRock Liquidity MuniCash, University of Texas, 5% 15aug2036, USD (2025B) and US650028ZA41. NMB holds in its top three: US43233KAW45, Salt River Project Agricultural Improvement and Power District, 5.25% 1jan2055, USD (2025) and US93974FJY07.
Which ETF is more diversified: MUB or NMB?
MUB holds 6762 securities with 2.21% of its assets in the top 15. NMB has 36 securities and a top 15 weight of 53.67%.
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