SPMBvsMMITETF Comparison
ETF 1
SPMB
State Street State Street SPDR Portfolio Mortgage Backed Bond ETF
This fund is part of
MBS & ABS
-0.05%
VS
State Street State Street SPDR Portfolio Mortgage Backed Bond ETF (SPMB) belongs to the MBS & ABS segment. NYLI MacKay Muni Intermediate ETF (MMIT) is part of the Municipal Bonds segment. SPMB's top 3 sector exposures are Industrials, Finance and Government Agencies. In contrast, MMIT's top sector exposures are Municipal. SPMB is less expensive with a Total Expense Ratio (TER) of 0.04%, versus 0.48% for MMIT. SPMB is down -1.42% year-to-date (YTD) with +$655M in YTD flows. MMIT performs better with -1.38% YTD performance, and +$210M in YTD flows. Run a side-by-side ETF comparison of SPMB and MMIT 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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SPMB vs MMIT performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/15/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SPMB MMIT | -1.55%-2.21% | -2.41%-2.84% | -1.42%-1.38% | -0.55%+0.01% | +13.73%+9.30% | -0.90%+2.58% |
| Flows | SPMB MMIT | +$53M+$16M | +$236M+$62M | +$655M+$210M | +$936M+$407M | +$2.59B+$1.02B | +$3.74B+$1.32B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SPMB MMIT | +4.82%+2.69% | +4.25%+2.14% | +5.94%+2.94% | +6.72%+2.96% |
| Max drawdown | SPMB MMIT | -2.90%-3.26% | -3.51%-3.43% | -5.40%-3.83% | -17.32%-11.87% |
| Max drawdown duration | SPMB MMIT | 78d71d | 198d198d | 318d178d | 1491d997d |
Trading data
SPMB | MMIT | |
Last sale 9/16/2026 at 1:30 PM | $21.52 | $23.40 |
| Previous close 09/15/2026 | $21.55 | $23.41 |
| Consolidated volume 09/15/2026 | ||
| 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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MMIT
is actively managed and doesn’t replicate an indexSPMB | MMIT | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/16/2026 at 1:30 PM
Live
Closed
SPMB | MMIT | |
|---|---|---|
| Last price | $21.52 | $23.40 |
| 1D performance | -0.14% | -0.04% |
| AuM | $7.02 B | $1.46 B |
| E/R | 0.04% | 0.48% |
Characteristics
SPMB | MMIT | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | State Street Investment Management | New York Life Investments |
| Benchmark | Bloomberg U.S. MBS Index | - |
| N° of holdings | 554 | 193 |
| Asset class | Bonds | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | January 15, 2009 | October 18, 2017 |
| ESG | No | No |
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Exposure
Countries
SPMB
USA
32.64%
Other
67.36%
MMIT
USA
31.45%
Other
68.55%
Sectors
SPMB
Industrials
32.31%
Other
67.69%
MMIT
Municipal
31.45%
Other
68.55%
Diversification
SPMB
Total weight of top 15 holdings out of 15
9.28%
MMIT
Total weight of top 15 holdings out of 15
10.56%
Top 15 holdings
Data as of July 31, 2026
SPMB
US3142J6C840
1.16%
US01F0526800
0.86%
FN MA4547, 2% 1feb2052, USD (ABS)
0.78%
US3142J6BK85
0.76%
US01F0506844
0.70%
FR SD8212, 2.5% 1may2052, USD (ABS)
0.60%
US3132DWMY65
0.55%
G2 MB0424, 5.5% 20jun2055, USD (ABS)
0.54%
FN MA4701, 4.5% 1aug2052, USD (ABS)
0.51%
US01F0606834
0.50%
US21H0506806
0.49%
FN FA0608, 5.5% 1feb2055, USD (ABS)
0.49%
FN MA4465, 2% 1nov2051, USD (ABS)
0.47%
FN FS2040, 2% 1feb2052, USD (ABS)
0.44%
US3132DWKV45
0.43%
MMIT
City of New York, 5.125% 15nov2011, USD
1.03%
Puerto Rico Sales Tax Financing Corp., 4.329% 1jul2040, USD
1.00%
Los Angeles Department of Water and Power, 5% 1jul2041, USD (2026)
0.91%
Minnesota Municipal Gas Energy, 5% 1sep2035, USD (2026A)
0.90%
Hudson Yards Infrastructure Corp., 5% 15feb2042, USD
0.90%
US70879QQA49
0.86%
Black Belt Energy Gas District, 4% 1oct2052, USD
0.63%
US850578UC77
0.62%
Chicago Board of Education, 6% 1apr2046, USD (2017)
0.59%
Phoenix Industrial Development Authority, 5% 31oct2044, USD (2024)
0.57%
US09182TFT97
0.56%
US74440DFC39
0.53%
US56035DJJ28
0.52%
Main Street Natural Gas Inc., 5% 1dec2052, USD (2022B)
0.47%
National Finance Authority, 4.25% 20jul2041, USD (2026-1, A-1)
0.47%
Frequently asked questions about SPMB and MMIT
How have the SPMB and MMIT ETFs performed in 2026?
As of September 15, 2026, SPMB is down -1.42% year-to-date (YTD), while MMIT has lost -1.38%. That puts MMIT better performer ahead so far this year.
Which ETF is attracting more investor money: SPMB or MMIT?
Year-to-date, the SPMB ETF saw +$655M in flows, compared to +$210M for MMIT.
Which ETF is more volatile: SPMB or MMIT?
Over the past year, SPMB had a volatility of 4.25%, while MMIT experienced 2.14%.
Which ETF is bigger: SPMB or MMIT?
As of September 15, 2026, SPMB holds $7.02 B in assets under management (AUM), while MMIT manages $1.46 B.
What sectors do the SPMB and MMIT ETFs invest in?
SPMB leans toward sectors like Industrials. Meanwhile, MMIT focuses on Municipal.
What are the top holdings of the SPMB ETF and MMIT ETF?
SPMB top holdings include US3142J6C840, US01F0526800 and FN MA4547, 2% 1feb2052, USD (ABS). MMIT holds in its top three: City of New York, 5.125% 15nov2011, USD, Puerto Rico Sales Tax Financing Corp., 4.329% 1jul2040, USD and Los Angeles Department of Water and Power, 5% 1jul2041, USD (2026).
Which ETF is more diversified: SPMB or MMIT?
SPMB holds 2713 securities with 9.28% of its assets in the top 15. MMIT has 854 securities and a top 15 weight of 10.56%.
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