MMINvsMBBETF Comparison
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NYLI MacKay Muni Insured ETF (MMIN) belongs to the Municipal Bonds segment. iShares MBS ETF (MBB) is part of the MBS & ABS segment. MMIN's top 1 sector exposures are Municipal. In contrast, MBB's top sector exposures are Industrials, Non-Corporate and Finance. MMIN is more expensive with a Total Expense Ratio (TER) of 0.47%, versus 0.04% for MBB. MMIN is down -0.21% year-to-date (YTD) with +$123M in YTD flows. MBB performs better with -0.09% YTD performance, and +$1.52B in YTD flows. Run a side-by-side ETF comparison of MMIN 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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MMIN vs MBB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/02/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MMIN MBB | -1.14%+0.01% | -2.32%-0.84% | -0.21%-0.09% | +5.21%+3.00% | +11.19%+15.45% | +0.71%+0.66% |
| Flows | MMIN MBB | +$18M+$655M | +$43M+$1.60B | +$123M+$1.52B | +$143M-$888M | +$76M+$12.43B | +$62M+$17.94B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MMIN MBB | +2.98%+4.66% | +2.95%+4.21% | +4.45%+5.83% | +4.42%+6.59% |
| Max drawdown | MMIN MBB | -3.17%-1.87% | -3.17%-2.92% | -6.48%-5.44% | -16.50%-17.29% |
| Max drawdown duration | MMIN MBB | 59d65d | 59d185d | 277d75d | 1383d1492d |
Trading data
MMIN | MBB | |
Last sale 9/3/2026 at 1:30 PM | $23.19 | $92.66 |
| Previous close 09/02/2026 | $23.27 | $92.51 |
| Consolidated volume 09/02/2026 | ||
| 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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MMIN
is actively managed and doesn’t replicate an indexMMIN | 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 9/3/2026 at 1:30 PM
Live
Closed
MMIN | MBB | |
|---|---|---|
| Last price | $23.19 | $92.66 |
| 1D performance | -0.34% | +0.16% |
| AuM | $472.99 M | $39.41 B |
| E/R | 0.47% | 0.04% |
Characteristics
MMIN | MBB | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | New York Life Investments | iShares |
| Benchmark | - | Bloomberg U.S. MBS Index |
| N° of holdings | 38 | 1231 |
| Asset class | - | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | October 18, 2017 | March 13, 2007 |
| ESG | No | No |
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Exposure
Countries
MMIN
USA
20.67%
Other
79.33%
MBB
USA
29.07%
Other
70.93%
Sectors
MMIN
Municipal
20.67%
Other
79.33%
MBB
Industrials
20.93%
Non-Corporate
7.91%
Other
71.16%
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Diversification
MMIN
Total weight of top 15 holdings out of 15
16.27%
MBB
Total weight of top 15 holdings out of 15
16.01%
Top 15 holdings
Data as of July 31, 2026
MMIN
US944514L227
1.59%
US215525PF71
1.24%
US800766PY75
1.18%
Los Angeles Department of Water and Power, 5% 1jul2055, USD (2025)
1.16%
Chicago, 5.25% 1nov2061, USD (2026A)
1.12%
US79901PCX42
1.06%
Collier Industrial Development Authority, 5.25% 1oct2052, USD (2026A)
1.06%
US01728LKY73
1.03%
US70252AAW53
1.03%
US167593X986
1.00%
Springfield School District №186, 5.5% 1jun2066, USD (2026D)
1.00%
Pennsylvania Economic Development Financing Authority, 5.75% 31dec2062, USD (2022)
0.96%
Cedar Rapids Community School District, 5.25% 1jan2051, USD (2026)
0.96%
US557021LE05
0.94%
US88276RFJ68
0.94%
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%
Frequently asked questions about MMIN and MBB
How have the MMIN and MBB ETFs performed in 2026?
As of September 2, 2026, MMIN is down -0.21% year-to-date (YTD), while MBB has lost -0.09%. That puts MBB better performer ahead so far this year.
Which ETF is attracting more investor money: MMIN or MBB?
Year-to-date, the MMIN ETF saw +$123M in flows, compared to +$1.52B for MBB.
Which ETF is more volatile: MMIN or MBB?
Over the past year, MMIN had a volatility of 2.95%, while MBB experienced 4.21%.
Which ETF is bigger: MMIN or MBB?
As of September 2, 2026, MMIN holds $472.99 M in assets under management (AUM), while MBB manages $39.41 B.
What sectors do the MMIN and MBB ETFs invest in?
MMIN leans toward sectors like Municipal. Meanwhile, MBB focuses on Industrials and Non-Corporate.
What are the top holdings of the MMIN ETF and MBB ETF?
MMIN top holdings include US944514L227, US215525PF71 and US800766PY75. MBB holds in its top three: BlackRock Cash Funds - Institutional, FR SD8146, 2% 1may2051, USD (ABS) and US21H0526861.
Which ETF is more diversified: MMIN or MBB?
MMIN holds 223 securities with 16.27% of its assets in the top 15. MBB has 9388 securities and a top 15 weight of 16.01%.
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Latest news about MMIN & MBB
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