IYY vs VOO
iShares Dow Jones US ETF vs Vanguard S&P 500 ETF
Which is better, IYY or VOO?
Nearly the same fund. VOO costs less.
VOO has a lower expense ratio. VOO led over 1Y, 3Y, 5Y and the full window. The two have moved almost in lockstep, correlation 1.00. IYY is less concentrated, with 35.2% of the fund in its ten largest positions against 37.6%.
MarketXLS is not an investment adviser. This comparison is generated automatically from market data and is for information only. A Best mark means the better reading on that one measure, not a recommendation to buy.
Side-by-Side Comparison
| Metric | IYY | VOO |
|---|---|---|
| Expense Ratio | 0.20% | 0.03%Best |
| AUM | $3.0B | $997.4B |
| Dividend Yield | 0.85% | 1.04% |
| Holdings | 970 | 509 |
| YTD Return | +11.34% | +11.48%Best |
| 1Y Return | +15.38% | +15.94%Best |
| 3Y Return (annualized) | +20.64% | +21.01%Best |
| 5Y Return (annualized) | +11.73% | +12.66%Best |
| Volatility (annualized) | 14.4% | 14.1%Best |
| Max Drawdown | -34.9% | -34.3%Best |
| $10,000 over 5 years | $17,412 | $18,149Best |
| Top 10 Weight | 35.2%Best | 37.6% |
| Fund Family | iShares by BlackRock (US) | Vanguard (US) |
| Category | Equity | Equity |
| Style | Large Cap Blend | Large Cap Blend |
| Inception | Jun 12, 2000 | Sep 7, 2010 |
Volatility and max drawdown are measured over the window both funds cover: Sep 9, 2010 to Sep 15, 2026 (16 years).
IYY vs VOO growth
Month-end closes. Both lines start at 0% in the first month shown, so the gap between them is the difference in growth across that window. The full view covers the 16 years both funds cover.
IYY vs VOO Performance
iShares Dow Jones US ETF (IYY) is an ETF from iShares by BlackRock (US) and Vanguard S&P 500 ETF (VOO) is an ETF from Vanguard (US). Over the past year IYY returned +15.38% while VOO returned +15.94%. Year to date, IYY is up 11.34% versus a gain of 11.48% for VOO.
Over three years, IYY compounded at +20.64% per year against +21.01% for VOO; over five years the annualized figures are +11.73% and +12.66% respectively. Across the full 16-year window we track, VOO has the edge at +13.34% annualized vs +13.03%.
Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
IYY has been the more volatile fund, with annualized monthly volatility of 14.4% compared with 14.1% for VOO. 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 -34.9% for IYY and -34.3% for VOO. Drawdown depth is what each fund did in the worst stretch of the window measured above.
The two funds' monthly returns correlate at 1.00. They move almost in lockstep, so holding both mostly duplicates the same exposure.
Fees and Cost Over Time
IYY charges 0.20% per year while VOO charges 0.03%. On a $10,000 position that is $20 vs $3 annually, a gap of $17 per year that compounds over a long holding period. On income, IYY currently yields 0.85% against 1.04% for VOO.
Holdings Overlap
91.5% of IYY's money is in holdings VOO also owns. 98.1% of VOO's money is in holdings IYY also owns.
Most of VOO is already inside IYY. Owning both mostly buys the same companies twice.
462 positions in common, counted across the 803 positions we hold weights for in IYY and 494 in VOO, against full books of 970 and 509.
What only one of them owns
Our book lists 29 positions for VOO that do not appear in our book for IYY (1.2% of the fund), and 276 for IYY that do not appear in VOO (5.7%).
Some of those will be the same company recorded under a different code in one of the two books, so the real difference in what you would own is no larger than this and may be smaller. We do not name the individual positions here for that reason.
Top Shared Holdings
| Stock | Weight in IYY | Weight in VOO | Difference |
|---|---|---|---|
| NVDANvidia Corp | 7.53% | 7.55% | 0.02% |
| AAPLApple, Inc | 6.55% | 7.05% | 0.50% |
| MSFTMicrosoft Corp | 5.31% | 5.36% | 0.05% |
| AMZNAmazon.Com Inc | 3.58% | 4.13% | 0.55% |
| GOOGLAlphabet Inc,class A | 2.80% | 3.24% | 0.44% |
| AVGOBroadcom Inc | 2.47% | 2.86% | 0.39% |
| GOOGAlphabet Inc | 2.23% | 2.62% | 0.39% |
| METAMeta Platforms Inc | 1.77% | 1.90% | 0.13% |
| MUMicron Technology, Inc. | 1.52% | 1.44% | 0.08% |
| TSLATesla Inc | 1.46% | 1.36% | 0.10% |
98.1% of VOO is already inside IYY.
You probably hold more than these two. Add the rest and see how much of the whole book is the same companies twice.
Free for up to 10 holdings. No account needed.
Frequently Asked Questions
Which is cheaper, IYY or VOO?
IYY has an expense ratio of 0.20% while VOO charges 0.03%. VOO is the cheaper option, by $17 a year on a $10,000 investment.
Which performed better, IYY or VOO?
Over the past year IYY returned +15.38% vs +15.94% for VOO, so VOO leads on 1-year performance. Over the longest common window we track (16 years), IYY annualized +13.03% vs +13.34% for VOO. Past performance does not guarantee future results. This is information, not a recommendation.
Which is riskier, IYY or VOO?
IYY has been the more volatile fund at 14.4% annualized versus 14.1% for VOO. Worst drawdown: IYY -34.9% vs VOO -34.3%.
Should I hold both IYY and VOO?
IYY and VOO have a monthly-return correlation of 1.00, so they move almost identically. What is left to separate them is the fee and the index each one tracks. This is information, not a recommendation.
What is the holdings overlap between IYY and VOO?
98.1% of VOO's money is in holdings IYY also owns. 98.1% of VOO's is in holdings IYY also owns. They hold 462 positions in common, counted across the 803 positions we hold weights for in IYY and 494 in VOO.
Which pays a higher dividend, IYY or VOO?
IYY yields 0.85% while VOO yields 1.04%, so VOO currently pays the higher dividend yield.
Is VOO better than IYY?
VOO has a lower expense ratio. VOO led over 1Y, 3Y, 5Y and the full window. The two have moved almost in lockstep, correlation 1.00. IYY is less concentrated, with 35.2% of the fund in its ten largest positions against 37.6%. Which one suits a particular account depends on what it is for. This is information, not a recommendation.