SPMB vs VOO
SPMB vs VOO
State Street SPDR Portfolio Mortgage Backed Bond ETF vs Vanguard S&P 500 ETF
Quick Verdict
VOO has a lower expense ratio. VOO delivered stronger 1-year returns. SPMB offers more diversification with 2556 holdings.
Side-by-Side Comparison
| Metric | SPMB | VOO | Winner |
|---|---|---|---|
| Expense Ratio | 0.04% | 0.03% | |
| AUM | $7.0B | $979.0B | |
| Dividend Yield | 4.05% | 1.09% | |
| Holdings | 2,661 | 509 | |
| YTD Return | -0.24% | +9.95% | |
| 1Y Return | +4.10% | +19.58% | |
| 3Y Return (annualized) | +4.32% | +19.43% | |
| 5Y Return (annualized) | -0.01% | +12.89% | |
| Volatility (annualized) | 4.5% | 14.2% | |
| Max Drawdown | -22.8% | -34.3% | |
| Fund Family | State Street Investment Management | Vanguard (US) | |
| Category | Fixed Income | Equity | |
| Inception | Jan 15, 2009 | Sep 7, 2010 |
SPMB vs VOO Performance
State Street SPDR Portfolio Mortgage Backed Bond ETF (SPMB) is a ETF from State Street Investment Management and Vanguard S&P 500 ETF (VOO) is a ETF from Vanguard (US). Over the past year SPMB returned +4.10% while VOO returned +19.58%. Year to date, SPMB is down 0.24% versus a gain of 9.95% for VOO.
Over three years, SPMB compounded at +4.32% per year against +19.43% for VOO; over five years the annualized figures are -0.01% and +12.89% respectively. Across the full 16-year window we track, VOO has the edge at +13.35% annualized vs +0.08%. Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
VOO has been the more volatile fund, with annualized monthly volatility of 14.2% compared with 4.5% for SPMB. Lower volatility generally means a smoother ride, though it often comes with lower long-run returns.
The deepest peak-to-trough decline in our data was -22.8% for SPMB and -34.3% for VOO. Drawdown depth is worth weighing if you expect to sell during market stress rather than ride it out.
The two funds' monthly returns correlate at 0.28. They move independently enough that combining them can meaningfully diversify a portfolio.
Fees and Cost Over Time
SPMB charges 0.04% per year while VOO charges 0.03%. On a $10,000 position that is $4 vs $3 annually, a gap of $1 per year that compounds over a long holding period. On income, SPMB currently yields 4.05% against 1.09% for VOO.
Holdings Overlap
SPMB and VOO share 0 holdings out of 3061 unique holdings combined, representing a 0.0% weight overlap.
Moderate overlap means holding both could provide meaningful diversification benefits.
Frequently Asked Questions
Which is cheaper, SPMB or VOO?
SPMB has an expense ratio of 0.04% while VOO charges 0.03%. VOO is the cheaper option. On a $10,000 investment, that is $1 per year of difference.
Which performed better, SPMB or VOO?
Over the past year SPMB returned +4.10% vs +19.58% for VOO, so VOO leads on 1-year performance. Over the longest common window we track (16 years), SPMB annualized +0.08% vs +13.35% for VOO. Past performance does not guarantee future results.
Which is riskier, SPMB or VOO?
VOO has been the more volatile fund at 14.2% annualized versus 4.5% for SPMB. Worst drawdown: SPMB -22.8% vs VOO -34.3%.
Should I hold both SPMB and VOO?
SPMB and VOO have a monthly-return correlation of 0.28, so combining them can provide real diversification depending on your allocation goals.
What is the holdings overlap between SPMB and VOO?
SPMB and VOO share 0 common holdings with a 0.0% weight overlap. Combined, they hold 3061 unique securities.
Which pays a higher dividend, SPMB or VOO?
SPMB yields 4.05% while VOO yields 1.09%, so SPMB currently pays the higher dividend yield.
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