Risk Adjusted Return: What Mutual Fund Returns Really Reveal
Two mutual funds can deliver the same annual return and still offer very different investment experiences. One may experience sharp fluctuations along the way, while the other may achieve a similar outcome with relatively stable performance. Looking at their returns alone would not reveal this difference. Risk adjusted return provides another way to evaluate performance by considering how much risk an investment took to generate its returns.
Key Takeaways
Risk adjusted return evaluates an investment's returns in relation to the risk taken to achieve them.
The Sharpe Ratio, Sortino Ratio, and Treynor Ratio measure risk-adjusted performance from different perspectives.
A higher risk-adjusted return can indicate more efficient performance, but it should be assessed alongside investment objectives, costs, portfolio composition, and the relevant peer group.
What Is Risk Adjusted Return?
Risk adjusted return measures the return generated by an investment relative to the risk involved in earning it. It helps investors assess whether the performance adequately compensated them for the fluctuations they experienced.
The meaning of risk adjusted return becomes clearer when two investments have similar returns but different levels of volatility. If one investment generates the same return with smaller fluctuations, it may demonstrate better risk efficiency.
Risk can be measured in different ways. It may refer to total volatility, downside fluctuations, or sensitivity to broader market movements. The appropriate measure depends on the aspect of investment risk being evaluated.
Why Does Risk Adjusted Return Matter?
Risk adjusted return adds context to investment performance. Absolute returns show how much an investment gained or lost over a period, but they do not explain the amount of risk involved in achieving that outcome.
This distinction is particularly relevant when comparing mutual funds with similar returns. A fund with higher returns may also have experienced substantially greater volatility. Another fund with slightly lower returns may have achieved its performance with less fluctuation.
Risk-adjusted measures help investors:
Compare investment efficiency: Understand how much return was generated relative to a selected measure of risk.
Evaluate mutual fund performance: Compare funds with similar investment objectives and within the same category.
Understand volatility: Distinguish between investments that experienced different levels or types of fluctuation.
Assess portfolio performance: Examine whether the returns generated are consistent with the risks being taken.
These measures complement return data rather than replace it. A fund's risk-adjusted performance is one part of a broader assessment.
How To Calculate Risk Adjusted Return
There is no single formula that applies to every risk-adjusted return calculation. The formula depends on the type of risk being measured and the investment being evaluated.
The Sharpe Ratio is a common starting point because it measures excess return relative to total volatility.
Sharpe Ratio: Return Relative To Total Risk
The Sharpe Ratio measures the excess return generated above a risk-free rate for each unit of total volatility.
Formula:
Sharpe Ratio = (Portfolio Return − Risk-Free Rate) ÷ Standard Deviation
Where:
Portfolio Return: The return generated by the investment or portfolio.
Risk-Free Rate: The return used as a reference for an investment with minimal risk.
Standard Deviation: A measure of how widely investment returns fluctuate around their average.
For example, assume a mutual fund generates an annual return of 15%, the selected risk-free rate is 6%, and the standard deviation is 12%.
Excess return = 15% − 6% = 9%
Sharpe Ratio = 9% ÷ 12% = 0.75
The resulting Sharpe Ratio is 0.75. It indicates the excess return generated per unit of measured volatility under these assumptions.
A higher Sharpe Ratio generally indicates better return efficiency relative to total volatility, provided the calculations use comparable periods and assumptions.
Sortino Ratio: Return Relative To Downside Risk
The Sortino Ratio evaluates excess return relative to downside deviation. Unlike the Sharpe Ratio, which considers overall volatility, the Sortino Ratio focuses on unfavorable fluctuations.
Formula:
Sortino Ratio = (Portfolio Return − Target or Reference Return) ÷ Downside Deviation
The return used in the numerator must match the reference specified in the calculation methodology. Some calculations use a risk-free rate, while others use a defined target return.
This measure can help when comparing investments where downside fluctuations are a particular concern. It does not penalize upward volatility in the same way as the Sharpe Ratio.
Treynor Ratio: Return Relative To Market Risk
The Treynor Ratio measures excess return relative to systematic market risk, represented by beta.
Formula:
Treynor Ratio = (Portfolio Return − Risk-Free Rate) ÷ Portfolio Beta
Beta indicates an investment's sensitivity to movements in the broader market. The Treynor Ratio therefore evaluates how much excess return an investment generated for each unit of market risk.
It is particularly relevant when evaluating diversified portfolios. It may be less informative when an investment's overall risk is not adequately represented by its market sensitivity.
Other Measures Of Risk-Adjusted Performance
Two other measures provide additional perspectives on investment performance.
Jensen's Alpha: Measures the difference between an investment's actual return and its expected return after accounting for market risk under the selected model. Positive alpha indicates performance above that model-based expectation.
Information Ratio: Measures active return relative to tracking error. It helps assess the consistency of an investment's performance relative to its benchmark.
No single measure captures every dimension of risk. The appropriate choice depends on the question being examined.
Risk Adjusted Return Example: Comparing Two Mutual Funds
Consider two hypothetical mutual funds that each deliver an annual return of 14%. Both use the same risk-free rate of 6%, but their standard deviations differ.
Particulars | Fund A | Fund B |
Annual return | 14% | 14% |
Risk-free rate | 6% | 6% |
Standard deviation | 18% | 10% |
Sharpe Ratio | 0.44 | 0.80 |
Fund A's Sharpe Ratio is calculated as (14% − 6%) ÷ 18%, which is approximately 0.44.
Fund B's Sharpe Ratio is calculated as (14% − 6%) ÷ 10%, which is 0.80.
Both funds generated the same annual return, but Fund B achieved it with lower measured volatility. Its higher Sharpe Ratio indicates greater return efficiency relative to total risk during the period considered.
This example illustrates why absolute returns alone may not provide enough information to compare mutual funds. The calculation does not establish that Fund B will perform better in the future.
Risk-Adjusted Return Vs Absolute Return
Absolute return and risk-adjusted return answer different questions about investment performance.
Basis | Absolute Return | Risk-Adjusted Return |
What it measures | The gain or loss over a period | Return relative to a measure of risk |
Risk consideration | Does not directly account for risk | Explicitly incorporates a risk measure |
Main purpose | Evaluating investment growth | Evaluating return efficiency |
Common use | Tracking gains or losses | Comparing investments with different risk profiles |
Key limitation | Does not explain the risk taken | Depends on the selected measure and underlying data |
Both measures are useful. Absolute return indicates the investment outcome, while risk-adjusted return adds context about the risk involved in achieving it.
How To Evaluate Risk Adjusted Return In Mutual Funds
Risk adjusted return can help compare mutual funds, but the figures become more meaningful when evaluated in context.
Compare funds within the same category. Funds with similar mandates and investment approaches provide a more meaningful comparison than funds with substantially different risk profiles.
Use comparable periods. Risk-adjusted ratios calculated over different periods may reflect different market conditions. The comparison should use consistent timeframes and compatible calculation methods.
Examine more than one measure. The Sharpe Ratio captures total volatility, while the Sortino Ratio focuses on downside deviation. Looking at both can provide a broader understanding of performance.
Consider the portfolio and its costs. A risk-adjusted ratio does not independently explain a fund's holdings, concentration, investment strategy, or expenses. These factors are relevant to interpreting its overall performance.
Relate the findings to investment objectives. A ratio is a performance measure, not a complete assessment of suitability. The investment horizon, financial goals, and tolerance for fluctuations remain relevant.
For a broader understanding of how holdings can overlap across funds, the WealthEase article on mutual fund overlap provides a related perspective on portfolio concentration.
Limitations Of Risk Adjusted Return
Risk-adjusted ratios are useful analytical tools, but their results depend on the assumptions and data used.
Historical data: The ratios describe past performance and do not guarantee future results.
Different definitions of risk: A fund can appear more attractive under one measure and less attractive under another.
Sensitivity to calculation inputs: The reference rate, measurement period, and method used to calculate volatility can influence the result.
Incomplete risk assessment: These ratios do not independently capture every portfolio characteristic or investment risk.
Limited comparability: Comparing funds from unrelated categories can produce misleading conclusions because their investment objectives and risk profiles differ.
Risk-adjusted return is most informative when considered alongside absolute returns, portfolio composition, costs, and the investor's objectives.
Before we conclude the blog, let us invite you for a 1:1 financial planning session.
Conclusion
Investment performance is not fully explained by the final return figure. The amount of volatility or market risk involved in generating that return also matters. Risk-adjusted measures such as the Sharpe, Sortino, and Treynor ratios offer different ways to evaluate this relationship, with each measure suited to a particular analytical purpose.
For investors assessing mutual funds or reviewing an existing portfolio, the value of these measures lies in providing context rather than a standalone ranking. A financial planner in Hyderabad can help interpret these figures alongside portfolio allocation, investment goals, and risk tolerance.
Frequently Asked Questions
What Is A Good Risk Adjusted Return?
There is no universal benchmark for a good risk-adjusted return. A higher ratio generally indicates better return efficiency, but the interpretation depends on the measure used, investment category, period, and prevailing market conditions.
Is A Higher Risk-Adjusted Return Always Better?
A higher ratio can indicate more efficient performance relative to the risk measured. It does not automatically make an investment more suitable. Investment objectives, time horizon, portfolio holdings, and other risks also matter.
Which Ratio Is Best For Measuring Risk-Adjusted Return?
The Sharpe Ratio is commonly used to measure excess return relative to total volatility. The Sortino Ratio focuses on downside risk, while the Treynor Ratio measures excess return relative to market risk. The appropriate measure depends on the purpose of the comparison.
How Is Risk Adjusted Return Calculated For Mutual Funds?
One common method is the Sharpe Ratio, calculated by subtracting the risk-free rate from the fund's return and dividing the result by its standard deviation. Other measures use downside deviation, beta, or benchmark-relative performance.
Can Risk-Adjusted Return Predict Future Mutual Fund Performance?
No. Risk-adjusted return measures historical performance relative to a selected risk measure. It can provide useful context for evaluating a fund, but past ratios do not establish how the fund will perform in future market conditions.
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