Investing & Markets

What is Asset Allocation?

Asset allocation is how you divide your investments among stocks, bonds, cash, and other asset classes to balance risk and reward. The goal of asset allocation is to manage risk by spreading capital across asset classes that react differently to market events.

Asset allocation is the single most important factor in determining portfolio return and volatility, overshadowing individual security selection. Investors with long time horizons and high risk tolerance typically allocate more to stocks, which offer high growth potential but high volatility. Those nearing retirement allocate more to bonds and cash to preserve capital.

Because asset prices fluctuate, the portfolio's actual allocation will drift from its target. Investors must conduct periodic rebalancing—selling overperforming assets and buying underperforming ones—to return the portfolio to its target allocation.

Quick Facts

Allocation ClassesEquities (stocks), fixed-income (bonds), cash, and alternatives

Return DriverPrimary driver of portfolio returns and volatility

Alignment GoalBased on investor age, time horizon, and risk tolerance

Maintenance StepRequires periodic rebalancing to manage asset drift

PRACTICAL EXAMPLE

A 30-year-old investor sets a target asset allocation of 80% stocks and 20% bonds to achieve long-term growth. After a market rally, stocks grow to represent 87% of the portfolio. The investor sells 7% of their stocks and buys bonds to rebalance.

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RELATED TERMS

Learn More Key Concepts

StockA financial security representing a fractional share of ownership in a corporation, conveying voting rights and claims on assets.

BondA debt security representing a loan made by an investor to a borrower, typically a corporation or government agency.

PortfolioA collection of financial investments, such as stocks, bonds, cash equivalents, and alternative assets, held by an investor.

DiversificationA risk management technique that mixes a wide variety of investments within a portfolio to reduce volatility and single-stock risk.

YieldThe income return on an investment, expressed as an annual percentage based on the asset's cost or market value.

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