VMBS vs. SPMB
Compare and contrast key facts about Vanguard Mortgage-Backed Securities ETF (VMBS) and SPDR Portfolio Mortgage Backed Bond ETF (SPMB).
VMBS and SPMB are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. VMBS is a passively managed fund by Vanguard that tracks the performance of the Barclays Capital U.S. MBS Index. It was launched on Nov 19, 2009. SPMB is a passively managed fund by State Street that tracks the performance of the Bloomberg US Aggregate Securitized - MBS. It was launched on Jan 15, 2009. Both VMBS and SPMB are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.
Performance
VMBS vs. SPMB - Performance Comparison
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VMBS vs. SPMB - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VMBS Vanguard Mortgage-Backed Securities ETF | 0.41% | 8.36% | 1.70% | 5.34% | -11.90% | -1.28% | 3.76% | 6.19% | 0.91% | 2.47% |
SPMB SPDR Portfolio Mortgage Backed Bond ETF | 0.51% | 8.29% | 1.35% | 5.09% | -12.05% | -1.46% | 4.19% | 6.16% | 1.01% | 2.13% |
Returns By Period
In the year-to-date period, VMBS achieves a 0.41% return, which is significantly lower than SPMB's 0.51% return. Over the past 10 years, VMBS has outperformed SPMB with an annualized return of 1.41%, while SPMB has yielded a comparatively lower 1.29% annualized return.
VMBS
- 1D
- 0.21%
- 1M
- -1.57%
- YTD
- 0.41%
- 6M
- 2.06%
- 1Y
- 5.79%
- 3Y*
- 4.29%
- 5Y*
- 0.49%
- 10Y*
- 1.41%
SPMB
- 1D
- 0.31%
- 1M
- -1.58%
- YTD
- 0.51%
- 6M
- 1.98%
- 1Y
- 5.73%
- 3Y*
- 4.11%
- 5Y*
- 0.37%
- 10Y*
- 1.29%
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VMBS vs. SPMB - Expense Ratio Comparison
Both VMBS and SPMB have an expense ratio of 0.04%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.
Return for Risk
VMBS vs. SPMB — Risk / Return Rank
VMBS
SPMB
VMBS vs. SPMB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Mortgage-Backed Securities ETF (VMBS) and SPDR Portfolio Mortgage Backed Bond ETF (SPMB). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
| VMBS | SPMB | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.16 | 1.18 | -0.02 |
Sortino ratioReturn per unit of downside risk | 1.67 | 1.69 | -0.02 |
Omega ratioGain probability vs. loss probability | 1.21 | 1.21 | 0.00 |
Calmar ratioReturn relative to maximum drawdown | 1.95 | 2.01 | -0.05 |
Martin ratioReturn relative to average drawdown | 6.10 | 5.76 | +0.34 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| VMBS | SPMB | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.16 | 1.18 | -0.02 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.07 | 0.05 | +0.02 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.26 | 0.17 | +0.09 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.46 | 0.34 | +0.12 |
Correlation
The correlation between VMBS and SPMB is 0.70, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.
Dividends
VMBS vs. SPMB - Dividend Comparison
VMBS's dividend yield for the trailing twelve months is around 4.23%, more than SPMB's 4.02% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
VMBS Vanguard Mortgage-Backed Securities ETF | 4.23% | 4.20% | 3.94% | 3.31% | 2.35% | 1.02% | 2.01% | 2.77% | 2.72% | 2.16% | 2.10% | 2.12% |
SPMB SPDR Portfolio Mortgage Backed Bond ETF | 4.02% | 3.98% | 3.76% | 3.21% | 2.98% | 2.59% | 2.95% | 3.24% | 3.36% | 3.13% | 2.99% | 3.05% |
Drawdowns
VMBS vs. SPMB - Drawdown Comparison
The maximum VMBS drawdown since its inception was -17.47%, roughly equal to the maximum SPMB drawdown of -18.03%. Use the drawdown chart below to compare losses from any high point for VMBS and SPMB.
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Drawdown Indicators
| VMBS | SPMB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -17.47% | -18.03% | +0.56% |
Max Drawdown (1Y)Largest decline over 1 year | -3.00% | -2.93% | -0.07% |
Max Drawdown (5Y)Largest decline over 5 years | -17.12% | -17.49% | +0.37% |
Max Drawdown (10Y)Largest decline over 10 years | -17.47% | -18.03% | +0.56% |
Current DrawdownCurrent decline from peak | -1.57% | -1.58% | +0.01% |
Average DrawdownAverage peak-to-trough decline | -2.51% | -2.87% | +0.36% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.96% | 1.02% | -0.06% |
Volatility
VMBS vs. SPMB - Volatility Comparison
Vanguard Mortgage-Backed Securities ETF (VMBS) and SPDR Portfolio Mortgage Backed Bond ETF (SPMB) have volatilities of 1.90% and 1.83%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| VMBS | SPMB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.90% | 1.83% | +0.07% |
Volatility (6M)Calculated over the trailing 6-month period | 2.89% | 2.77% | +0.12% |
Volatility (1Y)Calculated over the trailing 1-year period | 5.00% | 4.88% | +0.12% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.71% | 6.73% | -0.02% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.37% | 7.59% | -2.22% |