Risk & Return

Risk and Return: Understanding the Investment Trade-Off

Risk and return are two of the most important concepts in investing. Every investment involves uncertainty, and the potential for higher returns is generally accompanied by a greater possibility of loss or volatility. Understanding this relationship helps investors compare opportunities, construct portfolios, and make decisions that reflect their financial goals.

Investment risk is not limited to the possibility of losing all invested capital. It can include temporary market declines, permanent losses, inflation, changing interest rates, business deterioration, liquidity constraints, or returns that fail to meet an investor's objectives.

What Is Investment Return?

Investment return measures the gain or loss produced by an investment over a specific period. Returns can come from changes in market value as well as income generated by the asset.

What Is Investment Risk?

Investment risk is the uncertainty surrounding future outcomes. Actual returns may differ substantially from what an investor expected when the investment was made.

Different investments contain different forms and levels of risk. A stock may experience substantial price volatility, a bond issuer may fail to make required payments, and cash may lose purchasing power because of inflation.

• The possibility of losing part or all of invested capital.
• Uncertainty about future investment returns.
• Changes in market prices and economic conditions.
• The possibility that income or cash flows will decline.
• The risk that investment returns will not achieve financial objectives.

The Relationship Between Risk and Return

Investors generally expect additional potential return when accepting additional risk. Otherwise, there would be little reason to choose a more uncertain investment over a safer alternative offering a similar return.

This relationship does not mean that taking more risk automatically produces higher returns. Risk creates the possibility of higher returns, but it also increases the range of possible outcomes, including substantial losses.

Expected Return vs. Actual Return

Expected return represents an estimate of what an investment might generate based on assumptions, historical information, valuations, interest rates, economic conditions, and other factors.

Actual return is what the investment ultimately produces. The two can be very different because financial markets and business outcomes are uncertain.

• Expected returns are estimates, not guarantees.
• Historical returns do not guarantee future performance.
• Market conditions can change rapidly.
• Investment outcomes can vary significantly across different time periods.

Nominal Return and Real Return

Investment performance can be measured before or after considering inflation. This distinction is important because an investment can increase in nominal value while providing little improvement in purchasing power.

For long-term investors, real return can be particularly important because financial goals such as retirement, education, or future spending depend on what portfolio assets can actually purchase.

Major Types of Investment Risk

Investment risk has many forms. Understanding the source of risk can help investors determine whether it can be diversified, reduced, transferred, or simply accepted as part of the investment strategy.

Interest-Rate Risk

Changes in interest rates can affect many investments, but the impact is particularly important for bonds and other fixed-income securities. When market interest rates rise, existing bonds with lower coupon rates generally become less attractive, which can cause their market prices to fall.

Longer-duration bonds are generally more sensitive to changes in interest rates than shorter-duration bonds. Interest rates can also influence stock valuations, borrowing costs, real estate prices, and economic activity.

Inflation Risk

Inflation risk is the possibility that investment returns will fail to keep pace with rising prices. Even investments with stable nominal values can lose purchasing power over time.

This is one reason why holding only low-volatility assets may not eliminate financial risk. A portfolio can experience little visible price movement while gradually losing real value.

Currency Risk

International investments may expose investors to changes in foreign exchange rates. Even when an overseas investment performs well in its local currency, changes in exchange rates can increase or reduce the return measured in the investor's home currency.

Currency movements can therefore become an additional source of both risk and return within internationally diversified portfolios.

Volatility as a Measure of Risk

Volatility describes the degree to which investment prices or returns fluctuate over time. Investments with larger and more frequent price movements are generally described as more volatile.

Volatility is useful for comparing investments, but it does not capture every form of risk. A stable-looking investment can still contain credit, liquidity, inflation, or permanent-loss risk.

• Higher volatility means a wider range of historical price movements.
• Lower volatility does not mean an investment is risk-free.
• Short-term volatility may be less important for investors with long horizons.
• Volatility becomes especially important when capital may be needed during a market decline.

Permanent Loss vs. Temporary Decline

Not every decline in market value results in a permanent loss. Markets fluctuate, and diversified assets can recover after periods of weakness. However, some losses become permanent because the underlying investment deteriorates or capital must be withdrawn before prices recover.

What Is a Drawdown?

A drawdown measures the decline of an investment or portfolio from a previous peak to a subsequent low. It provides a practical way to understand the magnitude of losses investors may experience during difficult market periods.

Drawdowns are important because recovering from a loss requires a larger percentage gain than the original percentage decline. For example, after losing half of its value, an investment must double from the lower level to return to its original value.

Risk Tolerance and Risk Capacity

Investors should distinguish between their willingness to accept risk and their financial ability to absorb losses. These concepts are related but not identical.

An investor may be emotionally comfortable with substantial market volatility but have limited risk capacity because the money will be needed soon. Conversely, another investor may have substantial financial capacity but little willingness to tolerate large fluctuations.

Time Horizon and Investment Risk

Time horizon can significantly influence the amount and type of risk an investor may be able to accept. Investors with long horizons generally have more time to recover from market declines than investors who need their capital in the near future.

• Short-term goals may require greater emphasis on liquidity and capital stability.
• Long-term goals may allow greater exposure to volatile growth assets.
• Risk exposure may need to decline as a financial goal approaches.
• Different goals can require different investment strategies within the same portfolio.

Diversification and Risk

Diversification spreads capital across multiple investments, asset classes, industries, or geographic regions. Its purpose is to reduce dependence on the performance of any single investment.

Diversification can reduce company-specific and concentration risks, but it cannot eliminate broad market risk. During major market declines, many investments can fall at the same time.

Correlation and Portfolio Risk

Correlation measures how investments tend to move relative to one another. Assets that behave differently under the same market conditions can improve diversification.

A portfolio containing many investments is not necessarily well diversified if all of those investments respond similarly to the same economic factors. Effective diversification depends on the relationship between holdings, not simply the number of positions.

Asset Allocation and the Risk-Return Balance

Asset allocation determines how a portfolio is divided among major asset classes. It is one of the primary tools investors can use to control the overall relationship between risk and expected return.

Risk-Adjusted Return

Comparing investments based only on total return can be misleading because two investments may generate similar results while exposing investors to very different levels of risk.

Risk-adjusted return considers how much return was generated relative to the uncertainty or risk taken to achieve it. This can provide a more useful basis for comparing strategies with different risk profiles.

• Higher return does not automatically mean better investment performance.
• The amount of risk required to generate the return should also be considered.
• Risk-adjusted measures can help compare portfolios with different volatility levels.
• No single risk metric captures every form of investment risk.

Common Measures of Investment Risk

Risk Across Different Asset Classes

Different asset classes respond to different economic conditions and contain different sources of uncertainty. Investors should understand what drives both return and risk before adding an asset to a portfolio.

• Stocks: market, business, valuation, and volatility risk.
• Bonds: interest-rate, credit, inflation, and reinvestment risk.
• Real estate: property, financing, economic, and liquidity risk.
• Cash: inflation and purchasing-power risk.
• Alternative investments: liquidity, complexity, valuation, and strategy-specific risks.
• Cryptocurrency: substantial volatility, regulatory, custody, liquidity, and technology risk.

Why Avoiding All Risk Can Be Risky

Eliminating investment volatility entirely may appear attractive, but an excessively conservative portfolio can create other risks. Returns may fail to keep pace with inflation or may be insufficient to achieve long-term financial objectives.

The objective of investing is therefore not necessarily to eliminate risk. It is to identify which risks are necessary, which risks can be diversified, and how much uncertainty is appropriate for the investor's objectives.

Common Risk and Return Mistakes

• Assuming higher risk guarantees higher returns.
• Selecting investments based only on historical performance.
• Confusing low volatility with low overall risk.
• Ignoring inflation when evaluating long-term returns.
• Taking more risk than the investor can financially tolerate.
• Concentrating too much capital in one investment or market.
• Selling during market declines without considering the original investment plan.
• Focusing on return while ignoring the probability and magnitude of potential losses.

A Framework for Balancing Risk and Return

An appropriate risk-return balance begins with the investor's objectives rather than with a particular investment. Portfolio risk should reflect what the capital is intended to accomplish and when it will be needed.

• Define the financial objective.
• Establish the investment time horizon.
• Assess both risk tolerance and risk capacity.
• Determine the required level of return.
• Build an appropriate asset allocation.
• Diversify across relevant assets and risk sources.
• Maintain sufficient liquidity for near-term needs.
• Evaluate results on a risk-adjusted basis.
• Review and rebalance the portfolio as circumstances change.

Risk and Return FAQ