AOA ETF Review – iShares Core Aggressive Allocation ETF (80/20)

AOA is an ETF from iShares that is part of their line of Core Allocation ETFs, which provide a well-diversified portfolio in one single fund. But is AOA a good investment? I review it here.

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AOA ETF – What, How, and Why

The AOA ETF from iShares is part of their line of asset allocation ETFs called Core Allocation Funds that launched in late 2008. AOA is called the Core Aggressive Allocation ETF. It has a little over $1.5 billion in assets.

We call these “asset allocation ETFs” because they hold a diversified basket of different assets in one single fund based on a specified asset allocation, which is quite literally the allocation to different assets, expressed as a ratio. In the case of AOA, that ratio is 80/20, meaning 80% stocks and 20% bonds, which iShares calls an “aggressive” allocation.

Whereas a target date fund shifts that asset allocation based on an increasingly conservative glidepath, these funds keep the allocation static over time.

ETFs are typically a single-asset product, but each fund in this line of Core Allocation ETFs from iShares uses 7 of their own vanilla index funds to construct a globally diversified mix of stocks and bonds:

IVV – iShares Core S&P 500 ETF
IDEV – iShares Core MSCI International Developed Markets ETF
IUSB – iShares Core Total USD Bond Market ETF
IEMG – iShares Core MSCI Emerging Markets ETF
IJH – iShares Core S&P Mid-Cap ETF
IAGG – iShares Core International Aggregate Bond ETF
IJR – iShares Core S&P Small-Cap ETF

The relative weights of these assets align with their global market cap weights at any given point in time.

AOA’s current exposure looks like this:

aoa etf allocations

41% U.S. Large Cap Stocks
3% U.S. Mid Cap Stocks
1% U.S. Small Cap Stocks
26% ex-US Developed Markets
10% Emerging Markets
16% Total U.S. Bond Market
3% Total International Bond Market

Historically, exposure like this with one ticker was only available with a mutual fund. These Core Allocation Funds provide a well-diversified index portfolio in a single ETF wrapper, all at a relatively low fee of 0.15%. I discussed here that, compared to mutual funds, ETFs offer greater flexibility, accessibility, control, and tax efficiency. As far as I know, these are the only broad, low-cost asset allocation ETFs available.

This simplicity of a one-fund portfolio can be extremely valuable for the index investor who wants to be completely hands off. You don’t have to worry about choosing investments and you don’t even need to do any rebalancing because the fund does it for you.

These products massively decrease the mental and logistical effort required in portfolio management, and more importantly, mitigate the investor’s own behavioral biases like recency bias, performance chasing, and loss aversion. As a result, it is well documented that investors who hold balanced allocation funds tend to outperform investors who try to manage everything themselves

These funds even have their own proprietary indexes, each for a different target level of risk. For AOA, that’s the S&P Target Risk Aggressive Index. The index is rebalanced semiannually in April and October.

AOA ETF Performance

Going back to their inception in 2008, here is a performance backtest of AOA compared to its sister funds through 2022:

aoa aok aor aom performance

As we would expect, AOA had the greatest return over this time period but also the greatest volatility and max drawdown.

Is AOA a Good Investment?

So is AOA a good investment? Maybe.

As usual, that depends on your personal goal(s), time horizon, and risk tolerance, and specifically whether or not those things align with an 80/20 portfolio of global stocks and bonds. And just because it has outperformed its peers thus far does not mean it will do so in the future.

In general, as mentioned earlier, AOA and rest of the iShares Core Allocation Funds provide a great single-fund solution for the hands-off global index investor at a relatively low fee. For those reasons, they even get the stamp of approval from staunch Bogleheads even though they aren’t Vanguard products.

These ETFs are also portable across brokers if you decide to switch, whereas a target date mutual fund might not be. They don’t offer any magical tax efficiency different from their constituent components, but of course we would consider them to be more tax-efficient than a mutual fund, making them potentially attractive for taxable space.

AOA could of course be used as one’s entire portfolio, or could be used as a core of stocks and bonds alongside other assets like gold.

Conveniently, AOA should be available at any major broker, including M1 Finance, which is the one I’m usually suggesting around here.

Don’t want to do all this investing stuff yourself or feel overwhelmed? Check out my flat-fee-only fiduciary friends over at

Disclosure: None.

Disclaimer:  While I love diving into investing-related data and playing around with backtests, I am in no way a certified expert. I have no formal financial education. I am not a financial advisor, portfolio manager, or accountant. This is not financial advice, investing advice, or tax advice. The information on this website is for informational and recreational purposes only. Investment products discussed (ETFs, mutual funds, etc.) are for illustrative purposes only. It is not a recommendation to buy, sell, or otherwise transact in any of the products mentioned. Do your own due diligence. Past performance does not guarantee future returns. Read my lengthier disclaimer here.

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