IAK vs VOO
iShares US Insurance ETF vs Vanguard S&P 500 ETF
Which is better, IAK or VOO?
All Cap Blend against Large Cap Blend.
VOO has a lower expense ratio. IAK led over 5Y, VOO over 1Y, 3Y and the full window. VOO is less concentrated, with 37.6% of the fund in its ten largest positions against 66.8%.
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 | IAK | VOO |
|---|---|---|
| Expense Ratio | 0.37% | 0.03%Best |
| AUM | $511M | $997.4B |
| Dividend Yield | 2.48% | 1.04% |
| Holdings | 61 | 509 |
| YTD Return | +4.20% | +13.21%Best |
| 1Y Return | +6.93% | +17.37%Best |
| 3Y Return (annualized) | +15.92% | +22.66%Best |
| 5Y Return (annualized) | +13.86%Best | +13.14% |
| Volatility (annualized) | 16.9% | 14.1%Best |
| Max Drawdown | -45.0% | -34.3%Best |
| $10,000 over 5 years | $19,136Best | $18,539 |
| Top 10 Weight | 66.8% | 37.6%Best |
| Fund Family | iShares by BlackRock (US) | Vanguard (US) |
| Category | Equity | Equity |
| Style | All Cap Blend | Large Cap Blend |
| Inception | May 1, 2006 | Sep 7, 2010 |
Volatility and max drawdown are measured over the window both funds cover: Sep 9, 2010 to Sep 24, 2026 (16 years).
IAK 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.
IAK vs VOO Performance
iShares US Insurance ETF (IAK) 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 IAK returned +6.93% while VOO returned +17.37%. Year to date, IAK is up 4.20% versus a gain of 13.21% for VOO.
Over three years, IAK compounded at +15.92% per year against +22.66% for VOO; over five years the annualized figures are +13.86% and +13.14% respectively. Across the full 16-year window we track, VOO has the edge at +13.42% annualized vs +11.03%.
Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
IAK has been the more volatile fund, with annualized monthly volatility of 16.9% 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 -45.0% for IAK 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 0.71. They usually move together, but the gap leaves some room for diversification.
Fees and Cost Over Time
IAK charges 0.37% per year while VOO charges 0.03%. On a $10,000 position that is $37 vs $3 annually, a gap of $34 per year that compounds over a long holding period. On income, IAK currently yields 2.48% against 1.04% for VOO.
Holdings Overlap
79.1% of IAK's money is in holdings VOO also owns. 1.2% of VOO's money is in holdings IAK also owns.
Most of IAK is already inside VOO. Owning both mostly buys the same companies twice.
16 positions in common, counted across the 58 positions we hold weights for in IAK and 494 in VOO, against full books of 61 and 509.
What only one of them owns
Measured across the 58 and 494 positions we hold weights for.
VOO holds 471 positions IAK does not, 98.0% of the fund.
Largest: NVDA 7.55%, AAPL 7.05%, MSFT 5.36%, AMZN 4.13%, GOOGL 3.24%
Top Shared Holdings
| Stock | Weight in IAK | Weight in VOO | Difference |
|---|---|---|---|
| PGRProgressive Corporation | 13.46% | 0.19% | 13.27% |
| CBChubb Ltd Common Stock Usd 24.15 | 12.77% | 0.20% | 12.57% |
| TRVThe Travelers Cos, Inc. | 8.08% | 0.12% | 7.96% |
| ALLAllstate Corp. | 6.93% | 0.11% | 6.82% |
| METMetlife Inc. | 4.61% | 0.08% | 4.53% |
| PRUPrudential Financial Inc | 4.43% | 0.07% | 4.36% |
| AFLAflac Inc. | 4.39% | 0.09% | 4.30% |
| AIGAmerican International Gr | 4.26% | 0.06% | 4.20% |
| HIGHartford Financial Services Group Inc. | 4.09% | 0.06% | 4.03% |
| ACGLArch Capital Group Ltd 5.450% | 3.74% | 0.05% | 3.69% |
79.1% of IAK is already inside VOO.
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, IAK or VOO?
IAK has an expense ratio of 0.37% while VOO charges 0.03%. VOO is the cheaper option, by $34 a year on a $10,000 investment.
Which performed better, IAK or VOO?
Over the past year IAK returned +6.93% vs +17.37% for VOO, so VOO leads on 1-year performance. Over the longest common window we track (16 years), IAK annualized +11.03% vs +13.42% for VOO. Past performance does not guarantee future results. This is information, not a recommendation.
Which is riskier, IAK or VOO?
IAK has been the more volatile fund at 16.9% annualized versus 14.1% for VOO. Worst drawdown: IAK -45.0% vs VOO -34.3%.
Should I hold both IAK and VOO?
IAK and VOO have a monthly-return correlation of 0.71, so their returns are far enough apart for the mix to behave differently from either one alone. This is information, not a recommendation.
What is the holdings overlap between IAK and VOO?
79.1% of IAK's money is in holdings VOO also owns. 1.2% of VOO's is in holdings IAK also owns. They hold 16 positions in common, counted across the 58 positions we hold weights for in IAK and 494 in VOO.
Which pays a higher dividend, IAK or VOO?
IAK yields 2.48% while VOO yields 1.04%, so IAK currently pays the higher dividend yield.
Is VOO better than IAK?
VOO has a lower expense ratio. IAK led over 5Y, VOO over 1Y, 3Y and the full window. VOO is less concentrated, with 37.6% of the fund in its ten largest positions against 66.8%. Which one suits a particular account depends on what it is for. This is information, not a recommendation.