WMSBvsSPMBETF Comparison
VS
ETF 2
SPMB
State Street State Street SPDR Portfolio Mortgage Backed Bond ETF
This fund is part of
MBS & ABS
+0.31%
Weitz Multisector Bond ETF (WMSB) belongs to the Intl Aggregate Bonds segment. State Street State Street SPDR Portfolio Mortgage Backed Bond ETF (SPMB) is part of the MBS & ABS segment. WMSB's top 3 sector exposures are Industrials, Finance and Consumer Services. In contrast, SPMB's top sector exposures are Industrials, Finance and Government Agencies. WMSB is more expensive with a Total Expense Ratio (TER) of 0.89%, versus 0.04% for SPMB. WMSB is up 1.23% year-to-date (YTD) with +$20M in YTD flows. SPMB performs worse with -0.34% YTD performance, and +$618M in YTD flows. Run a side-by-side ETF comparison of WMSB and SPMB 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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WMSB vs SPMB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/30/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | WMSB SPMB | +1.79%+3.07% | -0.40%-0.44% | +1.23%-0.34% | +2.85%+0.34% | n/a+20.05% | n/a+0.78% |
| Flows | WMSB SPMB | -+$29M | -+$143M | +$20M+$618M | +$28M+$804M | -+$2.48B | -+$3.53B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | WMSB SPMB | +3.84%+6.02% | +2.97%+4.72% | n/a+5.73% | n/a+6.80% |
| Max drawdown | WMSB SPMB | -2.89%-4.41% | -2.89%-5.57% | n/a-5.57% | n/a-17.04% |
| Max drawdown duration | WMSB SPMB | 66d66d | 66d243d | n/a243d | n/a1436d |
Trading data
WMSB | SPMB | |
Last sale 10/30/2026 at 1:30 PM | $24.45 | $21.70 |
| Previous close 10/29/2026 | $24.41 | $21.61 |
| 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 September 30, 2026
1-year trailing difference
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WMSB
is actively managed and doesn’t replicate an indexWMSB | SPMB | |
|---|---|---|
| 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
WMSB | SPMB | |
|---|---|---|
| Last price | $24.45 | $21.70 |
| 1D performance | +0.18% | +0.42% |
| AuM | $26.91 M | $7.03 B |
| E/R | 0.89% | 0.04% |
Characteristics
WMSB | SPMB | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | Weitz Investment Management | State Street Investment Management |
| Benchmark | - | Bloomberg U.S. MBS Index |
| N° of holdings | 43 | 568 |
| Asset class | - | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | November 4, 2025 | January 15, 2009 |
| ESG | No | No |
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Exposure
Countries
WMSB
USA
28.11%
Other
71.89%
SPMB
USA
32.36%
Other
67.64%
Sectors
WMSB
Industrials
15.39%
Other
84.61%
SPMB
Industrials
32.01%
Other
67.99%
Diversification
WMSB
Total weight of top 15 holdings out of 15
54.36%
SPMB
Total weight of top 15 holdings out of 15
9.74%
Top 15 holdings
Data as of September 30, 2026
WMSB
FN MA5734, 5% 1jun2055, USD (ABS)
8.30%
US3140W6MZ25
7.99%
US3142J6DY61
7.90%
US3140W3KL26
5.29%
US3132DWPG23
3.52%
US81750BAG23
3.42%
US3133KPE612
3.01%
US74345HAL50
2.76%
Canada Cartage, 9.75% 8may2031, USD
2.19%
US3133KPUH99
1.84%
US00489QAB86
1.80%
US629174AC77
1.77%
FN MA5469, 5% 1sep2054, USD (ABS)
1.60%
FN MA5294, 5% 1mar2054, USD (ABS)
1.58%
Midas Opco Holdings, 5.625% 15aug2029, USD
1.39%
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%
Frequently asked questions about WMSB and SPMB
How have the WMSB and SPMB ETFs performed in 2026?
As of October 30, 2026, WMSB is up 1.23% year-to-date (YTD), while SPMB has lost -0.34%. That puts WMSB better performer ahead so far this year.
Which ETF is attracting more investor money: WMSB or SPMB?
Year-to-date, the WMSB ETF saw +$20M in flows, compared to +$618M for SPMB.
Which ETF is more volatile: WMSB or SPMB?
Over the past year, WMSB had a volatility of 2.97%, while SPMB experienced 4.72%.
Which ETF is bigger: WMSB or SPMB?
As of October 30, 2026, WMSB holds $26.91 M in assets under management (AUM), while SPMB manages $7.03 B.
What sectors do the WMSB and SPMB ETFs invest in?
WMSB leans toward sectors like Industrials. Meanwhile, SPMB focuses on Industrials.
What are the top holdings of the WMSB ETF and SPMB ETF?
WMSB top holdings include FN MA5734, 5% 1jun2055, USD (ABS), US3140W6MZ25 and US3142J6DY61. SPMB holds in its top three: US01F0526A56, US3142J6C840 and FN MA4547, 2% 1feb2052, USD (ABS).
Which ETF is more diversified: WMSB or SPMB?
WMSB holds 92 securities with 54.36% of its assets in the top 15. SPMB has 2752 securities and a top 15 weight of 9.74%.
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Latest news about WMSB & SPMB
Weitz Expands Its ETF Lineup with the Launch of the Multisector Bond ETF (WMSB)
November 8, 2025
WMSB
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