SPMBvsMMITETF Comparison
ETF 1
SPMB
State Street State Street SPDR Portfolio Mortgage Backed Bond ETF
This fund is part of
MBS & ABS
+0.31%
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 -0.34% year-to-date (YTD) with +$618M in YTD flows. MMIT performs better with 0.22% YTD performance, and +$382M 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 10/30/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SPMB MMIT | +3.07%+3.65% | -0.44%-0.19% | -0.34%+0.22% | +0.34%+0.82% | +20.05%+13.85% | +0.78%+5.10% |
| Flows | SPMB MMIT | +$29M+$171M | +$143M+$201M | +$618M+$382M | +$804M+$493M | +$2.48B+$1.11B | +$3.53B+$1.46B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SPMB MMIT | +6.02%+4.70% | +4.72%+2.97% | +5.73%+3.08% | +6.80%+3.11% |
| Max drawdown | SPMB MMIT | -4.41%-5.10% | -5.57%-5.97% | -5.57%-5.97% | -17.04%-11.87% |
| Max drawdown duration | SPMB MMIT | 66d78d | 243d243d | 243d243d | 1436d997d |
Trading data
SPMB | MMIT | |
Last sale 10/30/2026 at 1:30 PM | $21.70 | $23.65 |
| Previous close 10/29/2026 | $21.61 | $23.64 |
| Consolidated volume 10/29/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of October 30, 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 10/30/2026 at 1:30 PM
Live
Closed
SPMB | MMIT | |
|---|---|---|
| Last price | $21.70 | $23.65 |
| 1D performance | +0.42% | +0.04% |
| AuM | $7.03 B | $1.65 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 | 568 | 188 |
| 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
32.36%
Other
67.64%
MMIT
USA
29.43%
Other
70.57%
Sectors
SPMB
Industrials
32.01%
Other
67.99%
MMIT
Municipal
29.43%
Other
70.57%
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Diversification
SPMB
Total weight of top 15 holdings out of 15
9.74%
MMIT
Total weight of top 15 holdings out of 15
10.45%
Top 15 holdings
Data as of September 30, 2026
SPMB
US01F0526A56
1.42%
US3142J6C840
1.13%
FN MA4547, 2% 1feb2052, USD (ABS)
0.75%
US3142J6DY61
0.74%
US3142J6BK85
0.73%
FR SD8212, 2.5% 1may2052, USD (ABS)
0.58%
US01F0506A92
0.57%
US3132DWMY65
0.53%
G2 MB0424, 5.5% 20jun2055, USD (ABS)
0.52%
US3618N56H72
0.50%
FN MA4701, 4.5% 1aug2052, USD (ABS)
0.49%
FN FA0608, 5.5% 1feb2055, USD (ABS)
0.47%
FN MA4465, 2% 1nov2051, USD (ABS)
0.45%
FR SD8193, 2% 1feb2052, USD (ABS)
0.43%
FN FS2040, 2% 1feb2052, USD (ABS)
0.42%
MMIT
City of New York, 5.125% 15nov2011, USD
0.99%
Energy Southeast, 5% 1nov2033, USD (2026)
0.87%
Hudson Yards Infrastructure Corp., 5% 15feb2042, USD
0.86%
Minnesota Municipal Gas Energy, 5% 1sep2035, USD (2026A)
0.84%
US01065CAM55
0.84%
US70879QQA49
0.80%
Puerto Rico Sales Tax Financing Corp., 4.329% 1jul2040, USD
0.80%
Los Angeles Department of Water and Power, 5% 1jul2043, USD (2026)
0.69%
Tennessee Energy Acquisition Corp., 5% 1dec2035, USD (2025A)
0.61%
US850578UC77
0.58%
Chicago Board of Education, 6% 1apr2046, USD (2017)
0.56%
Black Belt Energy Gas District, 5% 1dec2035, USD (2025 F)
0.52%
Phoenix Industrial Development Authority, 5% 31oct2044, USD (2024)
0.51%
California Community Choice Financing Authority, 5% 1nov2033, USD (2025F)
0.49%
US74440DFC39
0.49%
Frequently asked questions about SPMB and MMIT
How have the SPMB and MMIT ETFs performed in 2026?
As of October 30, 2026, SPMB is down -0.34% year-to-date (YTD), while MMIT has returned 0.22%. 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 +$618M in flows, compared to +$382M for MMIT.
Which ETF is more volatile: SPMB or MMIT?
Over the past year, SPMB had a volatility of 4.72%, while MMIT experienced 2.97%.
Which ETF is bigger: SPMB or MMIT?
As of October 30, 2026, SPMB holds $7.03 B in assets under management (AUM), while MMIT manages $1.65 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 US01F0526A56, US3142J6C840 and FN MA4547, 2% 1feb2052, USD (ABS). MMIT holds in its top three: City of New York, 5.125% 15nov2011, USD, Energy Southeast, 5% 1nov2033, USD (2026) and Hudson Yards Infrastructure Corp., 5% 15feb2042, USD.
Which ETF is more diversified: SPMB or MMIT?
SPMB holds 2752 securities with 9.74% of its assets in the top 15. MMIT has 880 securities and a top 15 weight of 10.45%.
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