AOA vs. AOK
AOA (iShares Core 80/20 Aggressive Allocation ETF) and AOK (iShares Core 30/70 Conservative Allocation ETF) are both Diversified Portfolio funds from iShares - AOA tracks the S&P Target Risk Aggressive Index while AOK tracks the S&P Target Risk Conservative Index. Both are passively managed. Over the past 10 years, AOA returned 10.91%/yr vs 5.26%/yr for AOK. A 0.79 correlation means they provide meaningful diversification when combined. Both charge a 0.15% expense ratio.
Performance
AOA vs. AOK - Performance Comparison
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Returns By Period
In the year-to-date period, AOA achieves a 9.88% return, which is significantly higher than AOK's 4.44% return. Over the past 10 years, AOA has outperformed AOK with an annualized return of 10.91%, while AOK has yielded a comparatively lower 5.26% annualized return.
AOA
- 1D
- -0.12%
- 1M
- 1.38%
- YTD
- 9.88%
- 6M
- 9.74%
- 1Y
- 24.31%
- 3Y*
- 17.27%
- 5Y*
- 9.26%
- 10Y*
- 10.91%
AOK
- 1D
- -0.22%
- 1M
- 0.89%
- YTD
- 4.44%
- 6M
- 4.18%
- 1Y
- 11.77%
- 3Y*
- 9.25%
- 5Y*
- 3.80%
- 10Y*
- 5.26%
AOA vs. AOK - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
AOA iShares Core 80/20 Aggressive Allocation ETF | 9.88% | 19.59% | 13.55% | 18.27% | -16.23% | 15.42% | 12.82% | 22.60% | -7.86% | 20.05% |
AOK iShares Core 30/70 Conservative Allocation ETF | 4.44% | 11.26% | 6.58% | 10.85% | -14.16% | 4.87% | 9.33% | 13.90% | -3.09% | 9.70% |
Correlation
The correlation between AOA and AOK is 0.90, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.90 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.85 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.84 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.82 |
Correlation (All Time) Calculated using the full available price history since Nov 11, 2008 | 0.79 |
The correlation between AOA and AOK shifts across timeframes, from 0.79 (all time) to 0.90 (1 year), reflecting how their relationship changes across market environments.
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Return for Risk
AOA vs. AOK — Risk / Return Rank
AOA
AOK
AOA vs. AOK - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares Core 80/20 Aggressive Allocation ETF (AOA) and iShares Core 30/70 Conservative Allocation ETF (AOK). 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.
| AOA | AOK | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.22 | ||
| Sortino ratioReturn per unit of downside risk | +0.22 | ||
| Omega ratioGain probability vs. loss probability | 1.41 | 1.38 | +0.03 |
| Calmar ratioReturn relative to maximum drawdown | 2.98 | 2.63 | +0.35 |
| Martin ratioReturn relative to average drawdown | 12.96 | 11.08 | +1.88 |
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Drawdowns
AOA vs. AOK - Drawdown Comparison
The maximum AOA drawdown since its inception was -28.38%, which is greater than AOK's maximum drawdown of -18.94%. Use the drawdown chart below to compare losses from any high point for AOA and AOK.
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Drawdown Indicators
| AOA | AOK | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -28.38% | -18.94% | -9.44% |
Max Drawdown (1Y)Largest decline over 1 year | -8.20% | -4.50% | -3.70% |
Max Drawdown (3Y)Largest decline over 3 years | -12.94% | -6.37% | -6.57% |
Max Drawdown (5Y)Largest decline over 5 years | -23.62% | -18.94% | -4.68% |
Max Drawdown (10Y)Largest decline over 10 years | -28.38% | -18.94% | -9.44% |
Current DrawdownCurrent decline from peak | -0.55% | -0.24% | -0.31% |
Average DrawdownAverage peak-to-trough decline | -4.04% | -2.36% | -1.68% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.88% | 1.06% | +0.82% |
Volatility
AOA vs. AOK - Volatility Comparison
iShares Core 80/20 Aggressive Allocation ETF (AOA) has a higher volatility of 4.13% compared to iShares Core 30/70 Conservative Allocation ETF (AOK) at 2.17%. This indicates that AOA's price experiences larger fluctuations and is considered to be riskier than AOK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| AOA | AOK | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.13% | 2.17% | +1.96% |
Volatility (6M)Calculated over the trailing 6-month period | 9.22% | 4.82% | +4.40% |
Volatility (1Y)Calculated over the trailing 1-year period | 11.15% | 5.99% | +5.16% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 13.07% | 7.15% | +5.92% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 13.58% | 6.74% | +6.84% |
AOA vs. AOK - Expense Ratio Comparison
Both AOA and AOK have an expense ratio of 0.15%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.
Dividends
AOA vs. AOK - Dividend Comparison
AOA's dividend yield for the trailing twelve months is around 2.05%, less than AOK's 3.27% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AOA iShares Core 80/20 Aggressive Allocation ETF | 2.05% | 2.18% | 2.30% | 2.22% | 2.10% | 1.67% | 1.71% | 2.50% | 2.37% | 5.09% | 2.26% | 2.15% |
AOK iShares Core 30/70 Conservative Allocation ETF | 3.27% | 3.28% | 3.23% | 2.93% | 2.25% | 1.55% | 2.10% | 2.71% | 2.68% | 2.91% | 2.14% | 2.02% |
Frequently Asked Questions
With a correlation of 0.90, AOA and AOK move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
AOA has higher volatility (4.13%) compared to AOK (2.17%). In terms of maximum drawdown, AOA dropped -28.38% vs AOK's -18.94%.
On 10-year performance, AOA leads with 10.91% vs 5.26% for AOK. Both ETFs have the same 0.15% expense ratio. On volatility, AOK has been the lower-risk option at 2.17%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 10-year period, AOA has performed better with a 10.91% return vs 5.26%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
AOA and AOK have the same expense ratio: 0.15% per year.
AOK has the higher dividend yield at 3.27%, compared with 2.05% for AOA.
AOA tracks S&P Target Risk Aggressive Index, while AOK tracks S&P Target Risk Conservative Index.
AOA currently has the higher Sharpe Ratio (2.19 vs 1.98), 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.
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