IAK vs. OEF
IAK (iShares U.S. Insurance ETF) and OEF (iShares S&P 100 ETF) are both exchange-traded funds - IAK is a Financials Equities fund tracking the Dow Jones U.S. Select Insurance Index, while OEF is a Large Cap Blend Equities fund tracking the S&P 100 Index. Both are passively managed. Over the past 10 years, IAK returned 12.68%/yr vs 16.78%/yr for OEF. A 0.66 correlation means they provide meaningful diversification when combined. IAK charges 0.43%/yr vs 0.20%/yr for OEF.
Performance
IAK vs. OEF - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, IAK achieves a 0.99% return, which is significantly lower than OEF's 8.71% return. Over the past 10 years, IAK has underperformed OEF with an annualized return of 12.68%, while OEF has yielded a comparatively higher 16.78% annualized return.
IAK
- 1D
- -0.12%
- 1M
- 2.58%
- YTD
- 0.99%
- 6M
- -0.34%
- 1Y
- 5.04%
- 3Y*
- 18.02%
- 5Y*
- 13.43%
- 10Y*
- 12.68%
OEF
- 1D
- 2.03%
- 1M
- 0.66%
- YTD
- 8.71%
- 6M
- 9.60%
- 1Y
- 28.24%
- 3Y*
- 23.02%
- 5Y*
- 15.42%
- 10Y*
- 16.78%
IAK vs. OEF - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
IAK iShares U.S. Insurance ETF | 0.99% | 9.50% | 28.25% | 11.28% | 11.33% | 26.84% | -2.86% | 25.94% | -11.48% | 14.18% |
OEF iShares S&P 100 ETF | 8.71% | 19.80% | 30.74% | 32.71% | -21.03% | 29.18% | 21.21% | 31.87% | -4.16% | 21.82% |
Correlation
The correlation between IAK and OEF is 0.05, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.05 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.20 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.40 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.51 |
Correlation (All Time) Calculated using the full available price history since May 5, 2006 | 0.66 |
Over the past year, the correlation between IAK and OEF has dropped to 0.05 - well below their long-term average of 0.66, suggesting their price drivers have been diverging.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
IAK vs. OEF — Risk / Return Rank
IAK
OEF
IAK vs. OEF - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares U.S. Insurance ETF (IAK) and iShares S&P 100 ETF (OEF). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| IAK | OEF | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.80 | ||
| Sortino ratioReturn per unit of downside risk | -2.30 | ||
| Omega ratioGain probability vs. loss probability | 1.07 | 1.39 | -0.32 |
| Calmar ratioReturn relative to maximum drawdown | 0.66 | 2.57 | -1.90 |
| Martin ratioReturn relative to average drawdown | 1.48 | 10.52 | -9.04 |
Loading charts...
Drawdowns
IAK vs. OEF - Drawdown Comparison
The maximum IAK drawdown since its inception was -77.38%, which is greater than OEF's maximum drawdown of -54.11%. Use the drawdown chart below to compare losses from any high point for IAK and OEF.
Loading charts...
Drawdown Indicators
| IAK | OEF | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -77.38% | -54.11% | -23.27% |
Max Drawdown (1Y)Largest decline over 1 year | -7.62% | -11.06% | +3.44% |
Max Drawdown (3Y)Largest decline over 3 years | -11.58% | -19.80% | +8.22% |
Max Drawdown (5Y)Largest decline over 5 years | -14.76% | -26.47% | +11.71% |
Max Drawdown (10Y)Largest decline over 10 years | -44.95% | -31.44% | -13.51% |
Current DrawdownCurrent decline from peak | -0.34% | -1.67% | +1.33% |
Average DrawdownAverage peak-to-trough decline | -16.11% | -11.74% | -4.37% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.41% | 2.69% | +0.72% |
Volatility
IAK vs. OEF - Volatility Comparison
iShares U.S. Insurance ETF (IAK) has a higher volatility of 5.45% compared to iShares S&P 100 ETF (OEF) at 4.96%. This indicates that IAK's price experiences larger fluctuations and is considered to be riskier than OEF based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| IAK | OEF | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.45% | 4.96% | +0.49% |
Volatility (6M)Calculated over the trailing 6-month period | 10.48% | 10.42% | +0.06% |
Volatility (1Y)Calculated over the trailing 1-year period | 15.04% | 13.29% | +1.75% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 18.14% | 17.79% | +0.35% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 20.92% | 18.49% | +2.43% |
IAK vs. OEF - Expense Ratio Comparison
IAK has a 0.43% expense ratio, which is higher than OEF's 0.20% expense ratio.
Dividends
IAK vs. OEF - Dividend Comparison
IAK's dividend yield for the trailing twelve months is around 2.90%, more than OEF's 1.04% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IAK iShares U.S. Insurance ETF | 2.90% | 1.69% | 1.49% | 1.44% | 1.69% | 2.26% | 2.07% | 1.84% | 2.33% | 1.62% | 1.68% | 1.62% |
OEF iShares S&P 100 ETF | 1.04% | 0.81% | 1.03% | 1.19% | 1.55% | 1.06% | 1.43% | 1.87% | 2.09% | 1.81% | 2.07% | 2.11% |
Frequently Asked Questions
IAK and OEF have a correlation of 0.05, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
IAK has higher volatility (5.45%) compared to OEF (4.96%). In terms of maximum drawdown, IAK dropped -77.38% vs OEF's -54.11%.
On 10-year performance, OEF leads with 16.78% vs 12.68% for IAK. On fees, OEF is cheaper at 0.20% per year. On volatility, OEF has been the lower-risk option at 4.96%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 10-year period, OEF has performed better with a 16.78% return vs 12.68%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
OEF is cheaper with a 0.20% expense ratio, compared with 0.43% for IAK.
IAK has the higher dividend yield at 2.90%, compared with 1.04% for OEF.
IAK is categorized as Financials Equities, while OEF is Large Cap Blend Equities. IAK tracks Dow Jones U.S. Select Insurance Index, while OEF tracks S&P 100 Index. Their fees differ too: 0.43% for IAK and 0.20% for OEF.
OEF currently has the higher Sharpe Ratio (2.14 vs 0.34), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
Find the right allocation for IAK and OEF
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer