AOK vs. AOA
AOK (iShares Core 30/70 Conservative Allocation ETF) and AOA (iShares Core 80/20 Aggressive Allocation ETF) are both Diversified Portfolio funds from iShares - AOK tracks the S&P Target Risk Conservative Index while AOA tracks the S&P Target Risk Aggressive Index. Both are passively managed. Over the past 10 years, AOK returned 5.26%/yr vs 10.91%/yr for AOA. A 0.79 correlation means they provide meaningful diversification when combined. Both charge a 0.15% expense ratio.
Performance
AOK vs. AOA - Performance Comparison
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Returns By Period
In the year-to-date period, AOK achieves a 4.44% return, which is significantly lower than AOA's 9.88% return. Over the past 10 years, AOK has underperformed AOA with an annualized return of 5.26%, while AOA has yielded a comparatively higher 10.91% annualized return.
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
- 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 vs. AOA - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
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% |
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% |
Correlation
The correlation between AOK and AOA 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 AOK and AOA 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
AOK vs. AOA — Risk / Return Rank
AOK
AOA
AOK vs. AOA - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares Core 30/70 Conservative Allocation ETF (AOK) and iShares Core 80/20 Aggressive Allocation ETF (AOA). 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.
| AOK | AOA | 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 | 1.38 | 1.41 | -0.03 |
| Calmar ratioReturn relative to maximum drawdown | 2.63 | 2.98 | -0.35 |
| Martin ratioReturn relative to average drawdown | 11.08 | 12.96 | -1.88 |
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Drawdowns
AOK vs. AOA - Drawdown Comparison
The maximum AOK drawdown since its inception was -18.94%, smaller than the maximum AOA drawdown of -28.38%. Use the drawdown chart below to compare losses from any high point for AOK and AOA.
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Drawdown Indicators
| AOK | AOA | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -18.94% | -28.38% | +9.44% |
Max Drawdown (1Y)Largest decline over 1 year | -4.50% | -8.20% | +3.70% |
Max Drawdown (3Y)Largest decline over 3 years | -6.37% | -12.94% | +6.57% |
Max Drawdown (5Y)Largest decline over 5 years | -18.94% | -23.62% | +4.68% |
Max Drawdown (10Y)Largest decline over 10 years | -18.94% | -28.38% | +9.44% |
Current DrawdownCurrent decline from peak | -0.24% | -0.55% | +0.31% |
Average DrawdownAverage peak-to-trough decline | -2.36% | -4.04% | +1.68% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.06% | 1.88% | -0.82% |
Volatility
AOK vs. AOA - Volatility Comparison
The current volatility for iShares Core 30/70 Conservative Allocation ETF (AOK) is 2.17%, while iShares Core 80/20 Aggressive Allocation ETF (AOA) has a volatility of 4.13%. This indicates that AOK experiences smaller price fluctuations and is considered to be less risky than AOA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| AOK | AOA | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 2.17% | 4.13% | -1.96% |
Volatility (6M)Calculated over the trailing 6-month period | 4.82% | 9.22% | -4.40% |
Volatility (1Y)Calculated over the trailing 1-year period | 5.99% | 11.15% | -5.16% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 7.15% | 13.07% | -5.92% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 6.74% | 13.58% | -6.84% |
AOK vs. AOA - Expense Ratio Comparison
Both AOK and AOA 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
AOK vs. AOA - Dividend Comparison
AOK's dividend yield for the trailing twelve months is around 3.27%, more than AOA's 2.05% 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, AOK and AOA 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, AOK dropped -18.94% vs AOA's -28.38%.
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.
AOK and AOA have the same expense ratio: 0.15% per year.
AOK has the higher dividend yield at 3.27%, compared with 2.05% for AOA.
AOK tracks S&P Target Risk Conservative Index, while AOA tracks S&P Target Risk Aggressive 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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