MMSDvsMBBETF Comparison
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NYLI MacKay Muni Short Duration ETF (MMSD) belongs to the Municipal Bonds segment. iShares MBS ETF (MBB) is part of the MBS & ABS segment. MMSD's top 3 sector exposures are Municipal, Healthcare and Industrials. In contrast, MBB's top sector exposures are Industrials, Non-Corporate and Finance. MMSD is more expensive with a Total Expense Ratio (TER) of 0.44%, versus 0.04% for MBB. MMSD is up 1.46% year-to-date (YTD) with +$27M in YTD flows. MBB performs worse with -0.09% YTD performance, and +$1.52B in YTD flows. Run a side-by-side ETF comparison of MMSD 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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MMSD 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. | MMSD MBB | +0.21%+0.01% | +0.24%-0.84% | +1.46%-0.09% | +2.77%+3.00% | n/a+15.45% | n/a+0.66% |
| Flows | MMSD MBB | +$6M+$655M | +$16M+$1.60B | +$27M+$1.52B | +$56M-$888M | -+$12.43B | -+$17.94B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MMSD MBB | +1.06%+4.66% | +1.10%+4.21% | n/a+5.83% | n/a+6.59% |
| Max drawdown | MMSD MBB | -0.61%-1.87% | -1.25%-2.92% | n/a-5.44% | n/a-17.29% |
| Max drawdown duration | MMSD MBB | 36d65d | 114d185d | n/a75d | n/a1492d |
Trading data
MMSD | MBB | |
Last sale 9/3/2026 at 1:30 PM | $25.15 | $92.66 |
| Previous close 09/02/2026 | $25.18 | $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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MMSD
is actively managed and doesn’t replicate an indexMMSD | 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
MMSD | MBB | |
|---|---|---|
| Last price | $25.15 | $92.66 |
| 1D performance | -0.13% | +0.16% |
| AuM | $83.65 M | $39.41 B |
| E/R | 0.44% | 0.04% |
Characteristics
MMSD | MBB | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | New York Life Investments | iShares |
| Benchmark | - | Bloomberg U.S. MBS Index |
| N° of holdings | 41 | 1231 |
| Asset class | - | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | May 5, 2025 | March 13, 2007 |
| ESG | No | No |
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Exposure
Countries
MMSD
USA
24.97%
Other
75.03%
MBB
USA
29.07%
Other
70.93%
Sectors
MMSD
Municipal
22.59%
Other
77.41%
MBB
Industrials
20.93%
Non-Corporate
7.91%
Other
71.16%
Diversification
MMSD
Total weight of top 15 holdings out of 15
19.67%
MBB
Total weight of top 15 holdings out of 15
16.01%
Top 15 holdings
Data as of July 31, 2026
MMSD
US708692BV94
1.85%
US72342NAF24
1.51%
US118217CN67
1.32%
US84136HCT86
1.31%
US19648FJ393
1.29%
Black Belt Energy Gas District, 5% 1jun2031, USD (2026)
1.29%
Main Street Natural Gas Inc., 5% 1may2054, USD (2023D)
1.28%
US63609YAA64
1.24%
New York Housing Development Corp., 5.458% 15dec2031, USD (2024, A)
1.24%
US360059AL37
1.23%
US59447UBB52
1.23%
US04785VCD47
1.23%
Arkansas Development Finance Authority, 4% 1sep2046, USD (2026A)
1.23%
San Jose (CA), 3.05% 1may2066, USD (2026A)
1.22%
US87972MCC47
1.22%
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 MMSD and MBB
How have the MMSD and MBB ETFs performed in 2026?
As of September 2, 2026, MMSD is up 1.46% year-to-date (YTD), while MBB has lost -0.09%. That puts MMSD better performer ahead so far this year.
Which ETF is attracting more investor money: MMSD or MBB?
Year-to-date, the MMSD ETF saw +$27M in flows, compared to +$1.52B for MBB.
Which ETF is more volatile: MMSD or MBB?
Over the past year, MMSD had a volatility of 1.1%, while MBB experienced 4.21%.
Which ETF is bigger: MMSD or MBB?
As of September 2, 2026, MMSD holds $83.65 M in assets under management (AUM), while MBB manages $39.41 B.
What sectors do the MMSD and MBB ETFs invest in?
MMSD leans toward sectors like Municipal. Meanwhile, MBB focuses on Industrials and Non-Corporate.
What are the top holdings of the MMSD ETF and MBB ETF?
MMSD top holdings include US708692BV94, US72342NAF24 and US118217CN67. MBB holds in its top three: BlackRock Cash Funds - Institutional, FR SD8146, 2% 1may2051, USD (ABS) and US21H0526861.
Which ETF is more diversified: MMSD or MBB?
MMSD holds 155 securities with 19.67% 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 MMSD & MBB
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