AOA vs. IWM

Last updated Jun 5, 2026

AOA (iShares Core 80/20 Aggressive Allocation ETF) and IWM (iShares Russell 2000 ETF) are both exchange-traded funds - AOA is a Diversified Portfolio fund tracking the S&P Target Risk Aggressive Index, while IWM is a Small Cap Blend Equities fund tracking the Russell 2000 Index. Both are passively managed. Over the past 10 years, AOA returned 10.53%/yr vs 10.97%/yr for IWM. Their correlation of 0.84 suggests significant overlap in exposure. AOA charges 0.15%/yr vs 0.19%/yr for IWM.

Performance

AOA vs. IWM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Core 80/20 Aggressive Allocation ETF (AOA) and iShares Russell 2000 ETF (IWM). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AOA achieves a 10.13% return, which is significantly lower than IWM's 18.84% return. Both investments have delivered pretty close results over the past 10 years, with AOA having a 10.53% annualized return and IWM not far ahead at 10.97%.

AOA

• 1D: 0.18%
• 1M: 3.39%
• YTD: 10.13%
• 6M: 10.89%
• 1Y: 24.17%
• 3Y*: 17.70%
• 5Y*: 9.19%
• 10Y*: 10.53%

IWM

• 1D: 1.51%
• 1M: 3.34%
• YTD: 18.84%
• 6M: 16.56%
• 1Y: 41.60%
• 3Y*: 19.00%
• 5Y*: 6.43%
• 10Y*: 10.97%

*Multi-year figures are annualized to reflect compound growth (CAGR)

AOA vs. IWM - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
AOA iShares Core 80/20 Aggressive Allocation ETF	10.13%	19.59%	13.55%	18.27%	-16.23%	15.42%	12.82%	22.60%	-7.86%	20.05%
IWM iShares Russell 2000 ETF	18.84%	12.66%	11.38%	16.83%	-20.48%	14.54%	20.03%	25.39%	-11.12%	14.58%

Correlation

The correlation between AOA and IWM is 0.81, 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	0.81
Correlation (3Y) Calculated over the trailing 3-year period	0.81
Correlation (5Y) Calculated over the trailing 5-year period	0.85
Correlation (10Y) Calculated over the trailing 10-year period	0.82
Correlation (All Time) Calculated using the full available price history since Nov 12, 2008	0.84

The correlation between AOA and IWM has been stable across timeframes, ranging from 0.81 to 0.85 - a consistent structural relationship.

AOA vs. IWM - Sectors Allocation Comparison

Sectors	AOA	IWM
Technology	27.4%	19.5%
Financial Services	16.1%	15.8%
Industrials	12.0%	17.1%
Consumer Cyclical	9.5%	7.8%
Communication Services	8.3%	2.0%
Healthcare	8.0%	15.8%
Consumer Defensive	5.0%	2.1%
Energy	4.3%	6.0%
Basic Materials	4.2%	4.5%
Utilities	2.7%	3.0%
Real Estate	2.4%	5.7%

Return for Risk

AOA vs. IWM — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

AOA

AOA Risk / Return Rank: 70
AOA Sharpe Ratio Rank: 71
AOA Sortino Ratio Rank: 72
AOA Omega Ratio Rank: 72
AOA Calmar Ratio Rank: 61
AOA Martin Ratio Rank: 72

IWM

IWM Risk / Return Rank: 68
IWM Sharpe Ratio Rank: 67
IWM Sortino Ratio Rank: 66
IWM Omega Ratio Rank: 59
IWM Calmar Ratio Rank: 76
IWM Martin Ratio Rank: 73

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

AOA vs. IWM - 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 Russell 2000 ETF (IWM). 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.

	AOA	IWM	Difference
Sharpe ratio: Return per unit of total volatility	2.28	2.18	+0.11
Sortino ratio: Return per unit of downside risk	3.22	3.00	+0.22
Omega ratio: Gain probability vs. loss probability	1.42	1.36	+0.07
Calmar ratio: Return relative to maximum drawdown	2.96	3.79	-0.83
Martin ratio: Return relative to average drawdown	13.13	13.45	-0.32
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AOA vs. IWM - Sharpe Ratio Comparison

The current AOA Sharpe Ratio is 2.28, which is comparable to the IWM Sharpe Ratio of 2.18. The chart below compares the historical Sharpe Ratios of AOA and IWM, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	AOA	IWM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.28	2.18	+0.11
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.71	0.29	+0.43
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.78	0.48	+0.30
Sharpe Ratio (All Time) Calculated using the full available price history	0.69	0.37	+0.32

Drawdowns

AOA vs. IWM - Drawdown Comparison

The maximum AOA drawdown since its inception was -28.38%, smaller than the maximum IWM drawdown of -59.05%. Use the drawdown chart below to compare losses from any high point for AOA and IWM.

Drawdown Indicators

	AOA	IWM	Difference
Max Drawdown Largest peak-to-trough decline	-28.38%	-59.05%	+30.67%
Max Drawdown (1Y) Largest decline over 1 year	-8.20%	-11.03%	+2.83%
Max Drawdown (3Y) Largest decline over 3 years	-12.94%	-27.50%	+14.56%
Max Drawdown (5Y) Largest decline over 5 years	-23.62%	-31.91%	+8.29%
Max Drawdown (10Y) Largest decline over 10 years	-28.38%	-41.13%	+12.75%
Current Drawdown Current decline from peak	-0.31%	-0.01%	-0.30%
Average Drawdown Average peak-to-trough decline	-4.05%	-10.77%	+6.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.85%	3.10%	-1.25%

Volatility

AOA vs. IWM - Volatility Comparison

The current volatility for iShares Core 80/20 Aggressive Allocation ETF (AOA) is 3.16%, while iShares Russell 2000 ETF (IWM) has a volatility of 5.70%. This indicates that AOA experiences smaller price fluctuations and is considered to be less risky than IWM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AOA	IWM	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.16%	5.70%	-2.54%
Volatility (6M) Calculated over the trailing 6-month period	8.51%	13.60%	-5.09%
Volatility (1Y) Calculated over the trailing 1-year period	10.63%	19.19%	-8.56%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	12.97%	22.53%	-9.56%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	13.54%	23.04%	-9.50%

AOA vs. IWM - Expense Ratio Comparison

AOA has a 0.15% expense ratio, which is lower than IWM's 0.19% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

AOA vs. IWM - Dividend Comparison

AOA's dividend yield for the trailing twelve months is around 2.04%, more than IWM's 0.87% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AOA iShares Core 80/20 Aggressive Allocation ETF	2.04%	2.18%	2.30%	2.22%	2.10%	1.67%	1.71%	2.50%	2.37%	5.09%	2.26%	2.15%
IWM iShares Russell 2000 ETF	0.87%	1.04%	1.15%	1.35%	1.48%	0.94%	1.04%	1.26%	1.40%	1.26%	1.38%	1.54%

Frequently Asked Questions

Can I hold both AOA and IWM in my portfolio?

AOA and IWM have a correlation of 0.81, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, AOA or IWM?

IWM has higher volatility (5.70%) compared to AOA (3.16%). In terms of maximum drawdown, AOA dropped -28.38% vs IWM's -59.05%.

Which ETF is better, AOA or IWM?

On 10-year performance, IWM leads with 10.97% vs 10.53% for AOA. On fees, AOA is cheaper at 0.15% per year. On volatility, AOA has been the lower-risk option at 3.16%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, AOA or IWM?

Over the 10-year period, IWM has performed better with a 10.97% return vs 10.53%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, AOA or IWM?

AOA is cheaper with a 0.15% expense ratio, compared with 0.19% for IWM.

Which ETF pays a higher dividend yield, AOA or IWM?

AOA has the higher dividend yield at 2.04%, compared with 0.87% for IWM.

What is the main difference between AOA and IWM?

AOA is categorized as Diversified Portfolio, while IWM is Small Cap Blend Equities. AOA tracks S&P Target Risk Aggressive Index, while IWM tracks Russell 2000 Index. Their fees differ too: 0.15% for AOA and 0.19% for IWM.

Which has better risk-adjusted returns?

AOA currently has the higher Sharpe Ratio (2.28 vs 2.18), 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.