MBBvsFTMSETF Comparison
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iShares MBS ETF (MBB) belongs to the MBS & ABS segment. Franklin Short-Term Municipal Income ETF (FTMS) is part of the Municipal Bonds segment. MBB's top 3 sector exposures are Industrials, Non-Corporate and Finance. In contrast, FTMS's top sector exposures are Municipal. MBB is less expensive with a Total Expense Ratio (TER) of 0.04%, versus 0.22% for FTMS. MBB is down -1.34% year-to-date (YTD) with +$1.52B in YTD flows. FTMS performs better with -0.59% YTD performance, and +$40M in YTD flows. Run a side-by-side ETF comparison of MBB and FTMS 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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MBB vs FTMS performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/11/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MBB FTMS | -1.48%-0.83% | -2.24%-1.04% | -1.34%-0.59% | -0.12%n/a | +13.76%n/a | -0.62%n/a |
| Flows | MBB FTMS | +$655M+$4M | +$892M+$19M | +$1.52B+$40M | -$888M- | +$12.43B- | +$17.94B- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MBB FTMS | +4.76%+1.55% | +4.22%n/a | +5.85%n/a | +6.60%n/a |
| Max drawdown | MBB FTMS | -2.79%-1.35% | -3.37%n/a | -5.44%n/a | -17.29%n/a |
| Max drawdown duration | MBB FTMS | 74d73d | 194dn/a | 75dn/a | 1492dn/a |
Trading data
MBB | FTMS | |
Last sale 9/11/2026 at 1:30 PM | $91.38 | $9.82 |
| Previous close 09/10/2026 | $91.48 | $9.80 |
| Consolidated volume 09/10/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of August 31, 2026
1-year trailing difference
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FTMS
is actively managed and doesn’t replicate an indexMBB | FTMS | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/11/2026 at 1:30 PM
Live
Closed
MBB | FTMS | |
|---|---|---|
| Last price | $91.38 | $9.82 |
| 1D performance | -0.11% | +0.15% |
| AuM | $38.92 B | $200.34 M |
| E/R | 0.04% | 0.22% |
Characteristics
MBB | FTMS | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | iShares | Franklin Templeton |
| Benchmark | Bloomberg U.S. MBS Index | - |
| N° of holdings | 1231 | 48 |
| Asset class | Bonds | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | March 13, 2007 | October 24, 2025 |
| ESG | No | No |
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Exposure
Countries
MBB
USA
29.07%
Other
70.93%
FTMS
USA
26.46%
Other
73.54%
Sectors
MBB
Industrials
20.93%
Non-Corporate
7.91%
Other
71.16%
FTMS
Municipal
26.46%
Other
73.54%
Diversification
MBB
Total weight of top 15 holdings out of 15
16.01%
FTMS
Total weight of top 15 holdings out of 15
17.73%
Top 15 holdings
Data as of July 31, 2026
MBB
BlackRock Cash Funds - Institutional
7.91%
FR SD8146, 2% 1may2051, USD (ABS)
1.00%
US21H0526861
0.98%
US01F0506844
0.66%
US21H0506806
0.58%
US01F0526800
0.56%
G2 MB0025, 5% 20nov2054, USD (ABS)
0.53%
G2 MA7648, 2% 20oct2051, USD (ABS)
0.52%
US36179WTX64
0.51%
FN MA4492, 2% 1dec2051, USD (ABS)
0.50%
FR SD8140, 2% 1apr2051, USD (ABS)
0.48%
US21H0426872
0.46%
US21H0606895
0.45%
US36179WJR07
0.44%
FN MA4465, 2% 1nov2051, USD (ABS)
0.43%
FTMS
Southeast Energy Authority, 5.25% 1mar2055, USD (2025B)
1.52%
US091097AA35
1.38%
US69068WAD56
1.26%
Main Street Natural Gas Inc., 4% 1jul2052, USD (2021A)
1.23%
California State University, 0.55% 1nov2049, USD (2016B-2)
1.19%
US686865AR74
1.16%
Texas Municipal Gas Acquisition and Supply Corp., 5% 1apr2036, USD (2026)
1.14%
California Community Choice Financing Authority, 5% 1nov2055, USD (2024G)
1.13%
City of Los Angeles, 5% 24jun2027, USD (2026)
1.11%
St. John the Baptist Parish, 3.3% 1jun2037, USD (2017)
1.11%
Kentucky Public Energy Authority, 5% 1dec2033, USD (2025)
1.11%
Newark, 4.25% 5may2027, USD (2026)
1.10%
US56035DDP42
1.10%
US773661AB90
1.10%
Southeast Energy Authority, 4% 1dec2051, USD
1.09%
Frequently asked questions about MBB and FTMS
How have the MBB and FTMS ETFs performed in 2026?
As of September 11, 2026, MBB is down -1.34% year-to-date (YTD), while FTMS has lost -0.59%. That puts FTMS better performer ahead so far this year.
Which ETF is attracting more investor money: MBB or FTMS?
Year-to-date, the MBB ETF saw +$1.52B in flows, compared to +$40M for FTMS.
Which ETF is bigger: MBB or FTMS?
As of September 11, 2026, MBB holds $38.92 B in assets under management (AUM), while FTMS manages $200.34 M.
What sectors do the MBB and FTMS ETFs invest in?
MBB leans toward sectors like Industrials and Non-Corporate. Meanwhile, FTMS focuses on Municipal.
What are the top holdings of the MBB ETF and FTMS ETF?
MBB top holdings include BlackRock Cash Funds - Institutional, FR SD8146, 2% 1may2051, USD (ABS) and US21H0526861. FTMS holds in its top three: Southeast Energy Authority, 5.25% 1mar2055, USD (2025B), US091097AA35 and US69068WAD56.
Which ETF is more diversified: MBB or FTMS?
MBB holds 9388 securities with 16.01% of its assets in the top 15. FTMS has 245 securities and a top 15 weight of 17.73%.
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Latest news about MBB & FTMS
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