VIITX vs VOO
Vanguard Institutional Intermediate Term Bond Fund Institutional Plus Class vs Vanguard S&P 500 ETF
Quick Verdict
VIITX has a lower expense ratio. VOO delivered stronger 1-year returns. VIITX offers more diversification with 1185 holdings.
Side-by-Side Comparison
| Metric | VIITX | VOO | Winner |
|---|---|---|---|
| Expense Ratio | 0.02% | 0.03% | |
| AUM | - | $979.0B | |
| Dividend Yield | 4.56% | 1.09% | |
| Holdings | 2,599 | 509 | |
| YTD Return | -2.08% | +13.44% | |
| 1Y Return | -1.49% | +22.62% | |
| 3Y Return (annualized) | +0.49% | +21.47% | |
| 5Y Return (annualized) | -2.31% | +13.27% | |
| Volatility (annualized) | 4.2% | 14.1% | |
| Max Drawdown | -15.0% | -34.3% | |
| Fund Family | Vanguard (US) | Vanguard (US) | |
| Category | Fixed Income | Equity | |
| Inception | Dec 1, 1997 | Sep 7, 2010 |
VIITX vs VOO Performance
Vanguard Institutional Intermediate Term Bond Fund Institutional Plus Class (VIITX) is a mutual fund from Vanguard (US) and Vanguard S&P 500 ETF (VOO) is a ETF from Vanguard (US). Over the past year VIITX returned -1.49% while VOO returned +22.62%. Year to date, VIITX is down 2.08% versus a gain of 13.44% for VOO.
Over three years, VIITX compounded at +0.49% per year against +21.47% for VOO; over five years the annualized figures are -2.31% and +13.27% respectively. Across the full 5-year window we track, VOO has the edge at +13.55% annualized vs -2.31%. Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
VOO has been the more volatile fund, with annualized monthly volatility of 14.1% compared with 4.2% for VIITX. 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 -15.0% for VIITX 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 0.56. They move independently enough that combining them can meaningfully diversify a portfolio.
Fees and Cost Over Time
VIITX charges 0.02% per year while VOO charges 0.03%. On a $10,000 position that is $2 vs $3 annually, a gap of $1 per year that compounds over a long holding period. On income, VIITX currently yields 4.56% against 1.09% for VOO.
Holdings Overlap
VIITX and VOO share 1 holdings out of 1689 unique holdings combined, representing a 0.1% weight overlap.
Moderate overlap means holding both could provide meaningful diversification benefits.
Top Shared Holdings
| Stock | Weight in VIITX | Weight in VOO | Difference |
|---|---|---|---|
| CAH | 0.08% | 0.09% | 0.01% |
Frequently Asked Questions
Which is cheaper, VIITX or VOO?
VIITX has an expense ratio of 0.02% while VOO charges 0.03%. VIITX is the cheaper option. On a $10,000 investment, that is $1 per year of difference.
Which performed better, VIITX or VOO?
Over the past year VIITX returned -1.49% vs +22.62% for VOO, so VOO leads on 1-year performance. Over the longest common window we track (5 years), VIITX annualized -2.31% vs +13.55% for VOO. Past performance does not guarantee future results.
Which is riskier, VIITX or VOO?
VOO has been the more volatile fund at 14.1% annualized versus 4.2% for VIITX. Worst drawdown: VIITX -15.0% vs VOO -34.3%.
Should I hold both VIITX and VOO?
VIITX and VOO have a monthly-return correlation of 0.56, so combining them can provide real diversification depending on your allocation goals.
What is the holdings overlap between VIITX and VOO?
VIITX and VOO share 1 common holdings with a 0.1% weight overlap. Combined, they hold 1689 unique securities.
Which pays a higher dividend, VIITX or VOO?
VIITX yields 4.56% while VOO yields 1.09%, so VIITX currently pays the higher dividend yield.
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