SPMBvsBKMIETF 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. BNY Mellon Municipal Intermediate ETF (BKMI) is part of the Municipal Bonds segment. SPMB's top 3 sector exposures are Industrials, Finance and Government Agencies. In contrast, BKMI's top sector exposures are Municipal and Sovereign. SPMB is less expensive with a Total Expense Ratio (TER) of 0.04%, versus 0.35% for BKMI. Run a side-by-side ETF comparison of SPMB and BKMI 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 BKMI performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/14/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SPMB BKMI | -1.67%-2.10% | -2.35%-2.64% | -1.36%n/a | -0.49%n/a | +13.39%n/a | -0.90%n/a |
| Flows | SPMB BKMI | +$64M+$32M | +$236M+$9M | +$655M- | +$936M- | +$2.59B- | +$3.75B- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SPMB BKMI | +4.86%+2.68% | +4.26%n/a | +5.94%n/a | +6.72%n/a |
| Max drawdown | SPMB BKMI | -2.84%-3.15% | -3.45%n/a | -5.40%n/a | -17.37%n/a |
| Max drawdown duration | SPMB BKMI | 77d70d | 197dn/a | 318dn/a | 1492dn/a |
Trading data
SPMB | BKMI | |
Last sale 9/15/2026 at 1:30 PM | $21.55 | $25.42 |
| Previous close 09/14/2026 | $21.53 | $25.48 |
| Consolidated volume 09/14/2026 | ||
| 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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BKMI
is actively managed and doesn’t replicate an indexSPMB | BKMI | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/15/2026 at 1:30 PM
Live
Closed
SPMB | BKMI | |
|---|---|---|
| Last price | $21.55 | $25.42 |
| 1D performance | +0.09% | -0.24% |
| AuM | $7.02 B | $1.67 B |
| E/R | 0.04% | 0.35% |
Characteristics
SPMB | BKMI | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | State Street Investment Management | BNY Mellon |
| Benchmark | Bloomberg U.S. MBS Index | - |
| N° of holdings | 554 | 135 |
| Asset class | Bonds | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | January 15, 2009 | January 9, 2026 |
| ESG | No | No |
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Exposure
Countries
SPMB
USA
32.64%
Other
67.36%
BKMI
USA
34.04%
Other
65.96%
Sectors
SPMB
Industrials
32.31%
Other
67.69%
BKMI
Municipal
33.88%
Other
66.12%
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Diversification
SPMB
Total weight of top 15 holdings out of 15
9.28%
BKMI
Total weight of top 15 holdings out of 15
10.85%
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%
BKMI
US452227VK43
0.96%
New York Liberty Development Corp., 5% 15nov2044, USD
0.93%
US736742ZR10
0.82%
State of Washington, 5% 1jul2038, USD (2023B)
0.76%
Tobacco Settlement Financing Corp. (NJ), 5% 1jun2033, USD (2018A)
0.74%
US56682HDR75
0.71%
US59333APJ42
0.68%
New York Dormitory Authority, 5% 1oct2035, USD (2026A)
0.67%
Connecticut Health and Educational Facilities Authority, 5% 1jul2064, USD (2025B-2)
0.66%
US59261A4U82
0.66%
US87638TJU88
0.65%
US88283KCB26
0.65%
US882725DB74
0.65%
US74445HAL42
0.65%
US56035DHT28
0.65%
Frequently asked questions about SPMB and BKMI
Which ETF is bigger: SPMB or BKMI?
As of September 14, 2026, SPMB holds $7.02 B in assets under management (AUM), while BKMI manages $1.67 B.
What sectors do the SPMB and BKMI ETFs invest in?
SPMB leans toward sectors like Industrials. Meanwhile, BKMI focuses on Municipal.
What are the top holdings of the SPMB ETF and BKMI ETF?
SPMB top holdings include US3142J6C840, US01F0526800 and FN MA4547, 2% 1feb2052, USD (ABS). BKMI holds in its top three: US452227VK43, New York Liberty Development Corp., 5% 15nov2044, USD and US736742ZR10.
Which ETF is more diversified: SPMB or BKMI?
SPMB holds 2713 securities with 9.28% of its assets in the top 15. BKMI has 531 securities and a top 15 weight of 10.85%.
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