INMUvsFMUBETF Comparison
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iShares Intermediate Muni Income Active ETF (INMU) and Fidelity Municipal Bond Opportunities ETF (FMUB) belong to the same industry segment: Municipal Bonds. Both ETFs have the same top 2 sector exposures: Municipal and Non-Corporate. INMU is more expensive with a Total Expense Ratio (TER) of 0.41%, versus 0.3% for FMUB. INMU is up 0.08% year-to-date (YTD) with +$311M in YTD flows. FMUB performs better with 0.55% YTD performance, and +$103M in YTD flows. Run a side-by-side ETF comparison of INMU and FMUB 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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INMU vs FMUB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/03/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | INMU FMUB | -0.59%-0.41% | -1.60%-1.25% | +0.08%+0.55% | +3.67%+3.95% | +12.35%n/a | +6.60%n/a |
| Flows | INMU FMUB | +$19M+$6M | +$77M+$40M | +$311M+$103M | +$426M+$128M | +$536M- | +$537M- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | INMU FMUB | +2.25%+2.45% | +2.10%+2.36% | +3.29%n/a | +3.00%n/a |
| Max drawdown | INMU FMUB | -2.17%-1.91% | -2.47%-2.57% | -4.19%n/a | -10.06%n/a |
| Max drawdown duration | INMU FMUB | 59d59d | 186d115d | 177dn/a | 1050dn/a |
Trading data
INMU | FMUB | |
Last sale 9/4/2026 at 2:15 PM | $23.47 | $50.01 |
| Previous close 09/03/2026 | $23.44 | $49.99 |
| Consolidated volume 09/03/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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Main metrics
Last update 9/4/2026 at 2:15 PM
Live
Closed
INMU | FMUB | |
|---|---|---|
| Last price | $23.47 | $50.01 |
| 1D performance | +0.11% | +0.05% |
| AuM | $551.89 M | $247.17 M |
| E/R | 0.41% | 0.3% |
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Exposure
Countries
INMU
USA
34.92%
Other
65.08%
FMUB
USA
37.88%
Other
62.12%
Sectors
INMU
Municipal
30.6%
Other
69.4%
FMUB
Municipal
27.48%
Non-Corporate
10.4%
Other
62.12%
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Diversification
INMU
Total weight of top 15 holdings out of 15
15.91%
FMUB
Total weight of top 15 holdings out of 15
21.9%
Top 15 holdings
Data as of July 31, 2026
INMU
BlackRock Liquidity MuniCash
4.32%
Pennsylvania, 5% 1apr2042, USD (2026)
1.02%
US207758Z636
1.02%
Port of Portland, 5.25% 1jul2042, USD
0.99%
US20772KF792
0.88%
US09182TEN37
0.85%
State of Washington, 5% 1feb2040, USD (2026C)
0.83%
US575829PX87
0.83%
US13013JHG40
0.82%
US60416TYA05
0.81%
California Statewide Communities Development Authority, 5% 1oct2028, USD (2025A)
0.78%
US13034DBS27
0.73%
Southern California Public Power Authority, 5% 1nov2033, USD (2026A)
0.70%
Pennsylvania Public School Building Authority, 5% 1jun2032, USD (2016A)
0.67%
US576528DP59
0.66%
FMUB
Fidelity Municipal Cash Central Fund
10.40%
US54659LDS07
1.78%
Black Belt Energy Gas District, 5% 1jun2031, USD (2026)
0.98%
US56035DJJ28
0.86%
US23503CFM47
0.82%
US64987KDJ43
0.80%
San Antonio Electric and Gas Systems, FRN 1feb2055, USD (2026A)
0.80%
US84136HCT86
0.77%
US52349EEY23
0.72%
Black Belt Energy Gas District, 5% 1nov2036, USD (2026)
0.71%
US88256FAU66
0.67%
Black Belt Energy Gas District, 5% 1dec2034, USD (2026)
0.65%
University of Kansas Hospital Authority, 5.5% 1mar2054, USD (2026A)
0.65%
Black Belt Energy Gas District, 5% 1oct2033, USD (2026)
0.65%
Illinois Finance Authority, 5.25% 1jul2035, USD (2019)
0.64%
Frequently asked questions about INMU and FMUB
How have the INMU and FMUB ETFs performed in 2026?
As of September 3, 2026, INMU is up 0.08% year-to-date (YTD), while FMUB has returned 0.55%. That puts FMUB better performer ahead so far this year.
Which ETF is attracting more investor money: INMU or FMUB?
Year-to-date, the INMU ETF saw +$311M in flows, compared to +$103M for FMUB.
Which ETF is more volatile: INMU or FMUB?
Over the past year, INMU had a volatility of 2.1%, while FMUB experienced 2.36%.
Which ETF is bigger: INMU or FMUB?
As of September 3, 2026, INMU holds $551.89 M in assets under management (AUM), while FMUB manages $247.17 M.
What sectors do the INMU and FMUB ETFs invest in?
INMU leans toward sectors like Municipal. Meanwhile, FMUB focuses on Municipal and Non-Corporate.
What are the top holdings of the INMU ETF and FMUB ETF?
INMU top holdings include BlackRock Liquidity MuniCash, Pennsylvania, 5% 1apr2042, USD (2026) and US207758Z636. FMUB holds in its top three: Fidelity Municipal Cash Central Fund, US54659LDS07 and Black Belt Energy Gas District, 5% 1jun2031, USD (2026).
Which ETF is more diversified: INMU or FMUB?
INMU holds 430 securities with 15.91% of its assets in the top 15. FMUB has 554 securities and a top 15 weight of 21.9%.
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