GENMvsMBBETF Comparison
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Genter Capital Municipal Quality Intermediate ETF (GENM) belongs to the Municipal Bonds segment. iShares MBS ETF (MBB) is part of the MBS & ABS segment. GENM's top 2 sector exposures are Municipal and Non-Corporate. In contrast, MBB's top sector exposures are Industrials, Non-Corporate and Finance. GENM is more expensive with a Total Expense Ratio (TER) of 0.39%, versus 0.04% for MBB. GENM is down -0.27% year-to-date (YTD) with +$15M in YTD flows. MBB performs worse with -1.78% YTD performance, and -$1.79B in YTD flows. Run a side-by-side ETF comparison of GENM 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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GENM vs MBB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/15/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | GENM MBB | -0.03%-0.25% | -1.73%-2.30% | -0.27%-1.78% | +0.18%-1.43% | n/a+17.04% | n/a-0.38% |
| Flows | GENM MBB | +$1M-$3.31B | +$3M-$2.66B | +$15M-$1.79B | +$21M-$5.06B | -+$8.97B | -+$13.89B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | GENM MBB | +3.61%+5.70% | +2.34%+4.61% | n/a+5.73% | n/a+6.66% |
| Max drawdown | GENM MBB | -3.80%-4.27% | -4.08%-5.38% | n/a-5.38% | n/a-16.94% |
| Max drawdown duration | GENM MBB | 92d52d | 100d229d | n/a229d | n/a1405d |
Trading data
GENM | MBB | |
Last sale 10/16/2026 at 1:30 PM | $9.97 | $90.52 |
| Previous close 10/15/2026 | $9.98 | $90.59 |
| Consolidated volume 10/15/2026 | ||
| 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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GENM
is actively managed and doesn’t replicate an indexGENM | 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 10/16/2026 at 1:30 PM
Live
Closed
GENM | MBB | |
|---|---|---|
| Last price | $9.97 | $90.52 |
| 1D performance | -0.05% | -0.08% |
| AuM | $32.10 M | $35.27 B |
| E/R | 0.39% | 0.04% |
Characteristics
GENM | MBB | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | Genter Capital | iShares |
| Benchmark | - | Bloomberg U.S. MBS Index |
| N° of holdings | 24 | 1237 |
| Asset class | - | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | May 22, 2024 | March 13, 2007 |
| ESG | No | No |
Exposure
Countries
GENM
USA
35.6%
Other
64.4%
MBB
USA
28.44%
Other
71.56%
Sectors
GENM
Municipal
26.72%
Non-Corporate
8.88%
Other
64.4%
MBB
Industrials
20.61%
Non-Corporate
7.6%
Other
71.79%
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Diversification
GENM
Total weight of top 15 holdings out of 15
42.31%
MBB
Total weight of top 15 holdings out of 15
16.82%
Top 15 holdings
Data as of August 31, 2026
GENM
Fidelity Investments Money Market Funds - Government Portfolio
8.88%
Southeast Energy Authority, 5% 1jan2054, USD (2023B)
3.33%
US717883J787
3.24%
Texas Municipal Gas Acquisition and Supply Corp., 5.5% 1jan2054, USD (2023A)
3.00%
Texas Transportation Commission, 2.8% 1oct2041, USD (2014-B)
2.68%
California Community Choice Financing Authority, 5% 1feb2031, USD (2026D)
2.50%
US92162PAM77
2.47%
US54627CCF86
2.40%
US681725PC59
2.36%
US639285TU95
2.26%
US944514X941
1.98%
US13048RAF47
1.91%
US74440DFN93
1.82%
US904189CK18
1.74%
US810694R761
1.72%
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 GENM and MBB
How have the GENM and MBB ETFs performed in 2026?
As of October 15, 2026, GENM is down -0.27% year-to-date (YTD), while MBB has lost -1.78%. That puts GENM better performer ahead so far this year.
Which ETF is attracting more investor money: GENM or MBB?
Year-to-date, the GENM ETF saw +$15M in flows, compared to -$1.79B for MBB.
Which ETF is more volatile: GENM or MBB?
Over the past year, GENM had a volatility of 2.34%, while MBB experienced 4.61%.
Which ETF is bigger: GENM or MBB?
As of October 15, 2026, GENM holds $32.10 M in assets under management (AUM), while MBB manages $35.27 B.
What sectors do the GENM and MBB ETFs invest in?
GENM leans toward sectors like Municipal and Non-Corporate. Meanwhile, MBB focuses on Industrials and Non-Corporate.
What are the top holdings of the GENM ETF and MBB ETF?
GENM top holdings include Fidelity Investments Money Market Funds - Government Portfolio, Southeast Energy Authority, 5% 1jan2054, USD (2023B) and US717883J787. MBB holds in its top three: BlackRock Cash Funds - Institutional, US01F0526982 and US21H0526945.
Which ETF is more diversified: GENM or MBB?
GENM holds 85 securities with 42.31% 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 GENM & 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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