This All-in-One ETF Rebalances Itself and May Be the Only Fund Your Retirement Account Needs

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By Tony Dong Updated Published

Quick Read

  • One-fund solution: AOA combines global stocks and investment-grade bonds in an automatically rebalanced 80/20 portfolio, eliminating the need to manage multiple ETFs.

  • Built for accumulation: Regular contributions and reinvested distributions can harness dollar-cost averaging and long-term compounding while keeping the portfolio aligned with its target allocation.

  • Low-cost diversification: AOA currently offers a 2.15% 30-day SEC yield and an effective 0.15% expense ratio after the fee waiver, providing broad global exposure at a competitive cost.

  • Are you ahead, or behind on retirement? SmartAsset's free tool can match you with a financial advisor in minutes to help you answer that today. Each advisor has been carefully vetted, and must act in your best interests. Don't waste another minute; learn more here.

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This All-in-One ETF Rebalances Itself and May Be the Only Fund Your Retirement Account Needs

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One of the biggest mistakes ETF investors make failing to stick with a plan. Markets rise and fall, stocks drift away from their target allocation, people get excited and tinker or chase the latest hot fad, and before long, a portfolio looks nothing like what the investor originally intended.

That’s one reason I’ve always liked all-in-one asset allocation ETFs. They automate the boring but important parts of investing. Diversification is built in, rebalancing happens behind the scenes, and all you have to do is continue contributing regularly and reinvesting your distributions. Over decades, consistently adding new money during both bull and bear markets generally matters far more than trying to time your entries and exits.

For investors still in the accumulation phase who want a growth-oriented portfolio without going all the way to 100% equities, one hands-off and low-cost option worth considering is the iShares Core Aggressive Allocation ETF (AOA).

iShares Core Aggressive Allocation ETF (AOA)

iShares Core Aggressive Allocation ETF (AOA) is an all-in-one asset allocation ETF that tracks the S&P Target Risk Aggressive Index. Rather than purchasing individual stocks and bonds directly, AOA uses a fund-of-funds structure. It owns several underlying iShares ETFs, providing diversified exposure across global equity and fixed-income markets while maintaining an approximate 80% allocation to stocks and 20% to bonds.

On the equity side, investors receive exposure to U.S. large-cap stocks through an S&P 500 ETF, developed international markets such as Japan, the United Kingdom, France, Germany, and Australia, emerging markets including China, India, Brazil, and Taiwan, as well as U.S. small- and mid-cap stocks.

The bond allocation is straightforward, consisting primarily of broad U.S. investment-grade bonds and international investment-grade bonds. The portfolio is automatically rebalanced back to its target weights, removing the need for investors to periodically sell outperforming assets and buy those that have lagged.

While AOA is designed primarily for long-term capital appreciation rather than income, it still provides a 2.15% 30-day SEC yield, giving investors a modest stream of cash flow that can be automatically reinvested to purchase additional shares. The portfolio also carries less risk than a pure equity ETF. Thanks to its 20% bond allocation, volatility has historically been lower.

Why I Like AOA

One of AOA’s biggest strengths is simplicity. Instead of managing multiple ETFs, calculating target allocations, and deciding when to rebalance, investors can accomplish everything through a single holding. That reduces the temptation to tinker with a portfolio based on short-term market movements.

Fees are also competitive. The ETF charges a 0.19% expense ratio, which iShares currently waives down to 0.15%. That’s just $15 annually for every $10,000 invested, an attractive price considering investors receive globally diversified exposure and ongoing portfolio management.

The fund-of-funds structure also offers tax advantages over manually rebalancing a portfolio in a taxable account. When investors rebalance on their own, selling appreciated positions may trigger capital gains taxes. Inside AOA, iShares can often utilize the ETF creation and redemption process when managing the underlying funds, making portfolio maintenance more tax efficient.

For investors still building wealth, AOA works particularly well when paired with automatic contributions. Continuing to invest through market declines allows new money to purchase more shares at lower prices, while automatically reinvesting the ETF’s distributions further compounds long-term returns.

Contact [email protected] for any questions or corrections.

Photo of Tony Dong
About the Author Tony Dong →

Tony Dong is the founder of ETF Portfolio Blueprint. He also serves as Lead ETF Analyst for ETF Central, a partnership between Trackinsight and the NYSE.

Tony’s work focuses on ETF strategy, portfolio construction, and risk management, with an emphasis on making complex investment concepts accessible to everyday investors. His insights and analysis have also appeared in U.S. News & World Report, Kiplinger, MoneySense, and The Motley Fool.

Tony holds a Master of Science degree in enterprise risk management from Columbia University and the Certified ETF Advisor (CETF) designation from The ETF Institute.

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