VMBSvsSPMBETF Comparison
VS
ETF 2
SPMB
State Street State Street SPDR Portfolio Mortgage Backed Bond ETF
This fund is part of
MBS & ABS
+0.82%
Vanguard Mortgage-Backed Securities ETF (VMBS) and State Street State Street SPDR Portfolio Mortgage Backed Bond ETF (SPMB) belong to the same industry segment: MBS & ABS. Both ETFs have the same top 3 sector exposures: Industrials, Finance and Government Agencies. VMBS is less expensive with a Total Expense Ratio (TER) of 0.03%, versus 0.04% for SPMB. VMBS is down -1.41% year-to-date (YTD) with +$1.65B in YTD flows. SPMB performs better with -0.97% YTD performance, and +$562M in YTD flows. Run a side-by-side ETF comparison of VMBS 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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VMBS vs SPMB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/22/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | VMBS SPMB | +0.10%+0.10% | -0.94%-0.91% | -1.41%-0.97% | -1.15%-0.89% | +19.37%+19.61% | +0.78%+0.54% |
| Flows | VMBS SPMB | +$100M-$115M | +$686M+$105M | +$1.65B+$562M | +$1.59B+$789M | -$1.53B+$2.45B | +$2.95B+$3.57B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | VMBS SPMB | +5.72%+6.05% | +4.39%+4.74% | +5.35%+5.79% | +6.51%+6.79% |
| Max drawdown | VMBS SPMB | -4.22%-4.41% | -5.75%-5.57% | -5.75%-5.57% | -16.74%-17.04% |
| Max drawdown duration | VMBS SPMB | 58d58d | 235d235d | 235d235d | 1398d1436d |
Trading data
VMBS | SPMB | |
Last sale 10/23/2026 at 1:30 PM | $45.23 | $21.54 |
| Previous close 10/22/2026 | $45.30 | $21.56 |
| Consolidated volume 10/22/2026 | ||
| 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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VMBS | 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 10/23/2026 at 1:30 PM
Live
Closed
VMBS | SPMB | |
|---|---|---|
| Last price | $45.23 | $21.54 |
| 1D performance | -0.15% | -0.12% |
| AuM | $15.89 B | $6.93 B |
| E/R | 0.03% | 0.04% |
Characteristics
VMBS | SPMB | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | Vanguard | State Street Investment Management |
| Benchmark | Bloomberg U.S. MBS Float Adjusted Index | Bloomberg U.S. MBS Index |
| N° of holdings | 698 | 566 |
| Asset class | Bonds | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | November 19, 2009 | January 15, 2009 |
| ESG | No | No |
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Exposure
Countries
VMBS
USA
26.03%
Other
73.97%
SPMB
USA
32.14%
Other
67.86%
Sectors
VMBS
Industrials
25.62%
Other
74.38%
SPMB
Industrials
31.8%
Other
68.2%
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Diversification
VMBS
Total weight of top 15 holdings out of 15
3.67%
SPMB
Total weight of top 15 holdings out of 15
9.79%
Top 15 holdings
Data as of August 31, 2026
VMBS
G2 MB0025, 5% 20nov2054, USD (ABS)
0.28%
US3618N56H72
0.28%
US3618N6K636
0.26%
US3618N6BE68
0.26%
US3140Y9B864
0.26%
G2 MB0024, 4.5% 20nov2054, USD (ABS)
0.25%
US21H0606A46
0.25%
US3132E0TL66
0.25%
US3142J6DY61
0.24%
US3618N6HU47
0.23%
FR SD8146, 2% 1may2051, USD (ABS)
0.23%
US3618N6FL65
0.23%
US01F0526982
0.22%
US3142J6C840
0.22%
FR RQ0056, 5.5% 1oct2055, USD (ABS)
0.21%
SPMB
US01F0526982
1.22%
US3142J6C840
1.13%
US01F0506927
0.95%
FN MA4547, 2% 1feb2052, USD (ABS)
0.76%
US3142J6BK85
0.73%
FR SD8212, 2.5% 1may2052, USD (ABS)
0.59%
US01F0606917
0.58%
US21H0526945
0.53%
US3132DWMY65
0.53%
G2 MB0424, 5.5% 20jun2055, USD (ABS)
0.52%
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)
0.43%
Frequently asked questions about VMBS and SPMB
How have the VMBS and SPMB ETFs performed in 2026?
As of October 22, 2026, VMBS is down -1.41% year-to-date (YTD), while SPMB has lost -0.97%. That puts SPMB better performer ahead so far this year.
Which ETF is attracting more investor money: VMBS or SPMB?
Year-to-date, the VMBS ETF saw +$1.65B in flows, compared to +$562M for SPMB.
Which ETF is more volatile: VMBS or SPMB?
Over the past year, VMBS had a volatility of 4.39%, while SPMB experienced 4.74%.
Which ETF is bigger: VMBS or SPMB?
As of October 22, 2026, VMBS holds $15.89 B in assets under management (AUM), while SPMB manages $6.93 B.
What sectors do the VMBS and SPMB ETFs invest in?
VMBS leans toward sectors like Industrials. Meanwhile, SPMB focuses on Industrials.
What are the top holdings of the VMBS ETF and SPMB ETF?
VMBS top holdings include G2 MB0025, 5% 20nov2054, USD (ABS), US3618N56H72 and US3618N6K636. SPMB holds in its top three: US01F0526982, US3142J6C840 and US01F0506927.
Which ETF is more diversified: VMBS or SPMB?
VMBS holds 4834 securities with 3.67% of its assets in the top 15. SPMB has 2738 securities and a top 15 weight of 9.79%.
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