FLMBvsMBBAETF Comparison
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Franklin Municipal Green Bond ETF (FLMB) belongs to the Green Bonds segment. iShares Mortgage-Backed Securities Active ETF (MBBA) is part of the MBS & ABS segment. FLMB's top 1 sector exposures are Municipal. In contrast, MBBA's top sector exposures are Industrials and Non-Corporate. FLMB is more expensive with a Total Expense Ratio (TER) of 0.3%, versus 0.26% for MBBA. Run a side-by-side ETF comparison of FLMB and MBBA 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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FLMB vs MBBA performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/04/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | FLMB MBBA | -1.59%-0.38% | -3.71%-0.65% | -2.55%n/a | +1.17%n/a | +7.33%n/a | -6.85%n/a |
| Flows | FLMB MBBA | -$4M+$5M | -$10M+$35M | -$20M- | -$19M- | -$38M- | -$42M- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | FLMB MBBA | +3.76%+4.75% | +3.32%n/a | +4.71%n/a | +4.66%n/a |
| Max drawdown | FLMB MBBA | -4.26%-2.02% | -4.83%n/a | -6.80%n/a | -19.53%n/a |
| Max drawdown duration | FLMB MBBA | 66d67d | 187dn/a | 282dn/a | 1809dn/a |
Trading data
FLMB | MBBA | |
Last sale 9/4/2026 at 1:30 PM | $23.03 | $48.68 |
| Previous close 09/04/2026 | $23.04 | $48.60 |
| Consolidated volume 09/04/2026 | ||
| 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 1:30 PM
Live
Closed
FLMB | MBBA | |
|---|---|---|
| Last price | $23.03 | $48.68 |
| 1D performance | -0.04% | +0.16% |
| AuM | $70.31 M | $156.78 M |
| E/R | 0.3% | 0.26% |
Characteristics
FLMB | MBBA | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | Franklin Templeton | iShares |
| Benchmark | - | - |
| N° of holdings | 27 | 25 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | August 31, 2017 | January 23, 2026 |
| ESG | Yes | No |
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Exposure
Countries
FLMB
USA
35.22%
Other
64.78%
MBBA
Data will be available soon
Sectors
FLMB
Municipal
35.22%
Other
64.78%
MBBA
Data will be available soon
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Diversification
FLMB
Total weight of top 15 holdings out of 15
50.44%
MBBA
Data will be available soon
Top 15 holdings
Data as of July 31, 2026
FLMB
US13013JDB98
4.96%
US13049YFL02
4.63%
US13013JCM62
4.49%
US45203NAV10
4.17%
US45884AB937
4.16%
Central Valley Water Reclamation Facility, 4% 1mar2047, USD (2021C)
3.87%
Atlanta Airport, 5.25% 1jul2043, USD (2023E)
3.33%
US7352403K70
3.12%
San Diego Regional Airport Authority, 5% 1jul2051, USD (2021B)
3.09%
US924166JC65
2.70%
US57422JBY38
2.69%
US155048EG20
2.55%
American Municipal Power Inc., 5% 15feb2044, USD (2019A)
2.30%
New York Liberty Development Corp., 2.5% 15nov2036, USD (2021A)
2.24%
US650360AD27
2.14%
MBBA
Data will be available soon
Frequently asked questions about FLMB and MBBA
Which ETF is bigger: FLMB or MBBA?
As of September 4, 2026, FLMB holds $70.31 M in assets under management (AUM), while MBBA manages $156.78 M.
What sectors do the FLMB and MBBA ETFs invest in?
FLMB leans toward sectors like Municipal. Meanwhile, MBBA focuses on Industrials and Non-Corporate.
What are the top holdings of the FLMB ETF and MBBA ETF?
FLMB top holdings include US13013JDB98, US13049YFL02 and US13013JCM62. MBBA holds in its top three: US01F0526800, US01F0206874 and BlackRock Liquidity T-Fund.
Which ETF is more diversified: FLMB or MBBA?
FLMB holds 78 securities with 50.44% of its assets in the top 15. MBBA has 491 securities and a top 15 weight of 89.36%.
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