IOO vs VTI
iShares Global 100 ETF vs Vanguard Morningstar Total Stock Market ETF
Quick Verdict
VTI has a lower expense ratio. IOO delivered stronger 1-year returns. VTI offers more diversification with 3,543 holdings.
Side-by-Side Comparison
| Metric | IOO | VTI | Winner |
|---|---|---|---|
| Expense Ratio | 0.40% | 0.03% | |
| AUM | $9.5B | $666.9B | |
| Dividend Yield | 0.84% | 1.07% | |
| Holdings | 117 | 3,543 | |
| YTD Return | +13.26% | +12.65% | |
| 1Y Return | +27.34% | +21.39% | |
| 3Y Return (annualized) | +25.54% | +21.54% | |
| 5Y Return (annualized) | +15.93% | +12.11% | |
| Volatility (annualized) | 15.8% | 15.3% | |
| Max Drawdown | -57.9% | -56.6% | |
| Fund Family | iShares by BlackRock (US) | Vanguard (US) | |
| Category | Equity | Equity | |
| Inception | Dec 5, 2000 | May 24, 2001 |
IOO vs VTI Performance
iShares Global 100 ETF (IOO) is a ETF from iShares by BlackRock (US) and Vanguard Morningstar Total Stock Market ETF (VTI) is a ETF from Vanguard (US). Over the past year IOO returned +27.34% while VTI returned +21.39%. Year to date, IOO is up 13.26% versus a gain of 12.65% for VTI.
Over three years, IOO compounded at +25.54% per year against +21.54% for VTI; over five years the annualized figures are +15.93% and +12.11% respectively. Across the full 25-year window we track, VTI has the edge at +8.07% annualized vs +5.81%. Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
IOO has been the more volatile fund, with annualized monthly volatility of 15.8% compared with 15.3% for VTI. 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 -57.9% for IOO and -56.6% for VTI. 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 0.94. They move almost in lockstep, so holding both mostly duplicates the same exposure.
Fees and Cost Over Time
IOO charges 0.40% per year while VTI charges 0.03%. On a $10,000 position that is $40 vs $3 annually, a gap of $37 per year that compounds over a long holding period. On income, IOO currently yields 0.84% against 1.07% for VTI.
Holdings Overlap
IOO and VTI share 53 holdings out of 2836 unique holdings combined, representing a 42.2% weight overlap.
Moderate overlap means holding both could provide meaningful diversification benefits.
Frequently Asked Questions
Which is cheaper, IOO or VTI?
IOO has an expense ratio of 0.40% while VTI charges 0.03%. VTI is the cheaper option. On a $10,000 investment, that is $37 per year of difference.
Which performed better, IOO or VTI?
Over the past year IOO returned +27.34% vs +21.39% for VTI, so IOO leads on 1-year performance. Over the longest common window we track (25 years), IOO annualized +5.81% vs +8.07% for VTI. Past performance does not guarantee future results.
Which is riskier, IOO or VTI?
IOO has been the more volatile fund at 15.8% annualized versus 15.3% for VTI. Worst drawdown: IOO -57.9% vs VTI -56.6%.
Should I hold both IOO and VTI?
IOO and VTI have a monthly-return correlation of 0.94, so they move almost identically. Holding both adds little diversification - most investors pick one, usually on fees or the specific index tracked.
What is the holdings overlap between IOO and VTI?
IOO and VTI share 53 common holdings with a 42.2% weight overlap. Combined, they hold 2836 unique securities.
Which pays a higher dividend, IOO or VTI?
IOO yields 0.84% while VTI yields 1.07%, so VTI currently pays the higher dividend yield.
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