- Published on
KembaraXtra-Islamic Finance-Islamic Capital Market
Sortino Ratio
Meaning of Sortino Ratio
The Sortino ratio is a risk-adjusted performance measure that focuses only on downside risk. Unlike the Sharpe ratio, which considers total volatility (both upward and downward movements), the Sortino ratio looks only at harmful volatility—returns that fall below a minimum acceptable or required return.
Why Sortino Ratio Is Used
Investors are usually concerned about losses, not gains. The Sortino ratio was developed to address this concern by ignoring upside volatility and measuring only the risk of negative returns. This makes it more suitable for investors who want to avoid downside risk.
Required Return vs Risk-Free Return
In the Sortino ratio, the required return (also called the minimum acceptable return, MAR) is used instead of the risk-free return. The required return represents the investor’s target or minimum expected return.
Sortino Ratio Formula
Sortino Ratio = (Portfolio Return − Required Return) ÷ Downside Deviation
Simple Example
Sortino ratio = (10% − 5%) ÷ 4% = 1.25
This means the investment generated 1.25 units of excess return for every unit of downside risk.
How to Interpret Sortino Ratio
A higher Sortino ratio indicates better downside risk-adjusted performance. It shows that the investment delivers higher returns while controlling losses. A lower Sortino ratio suggests that downside risk is high relative to returns.
Difference Between Sortino Ratio and Sharpe Ratio
Relevance in Islamic Finance
The Sortino ratio aligns well with Islamic investment principles, as Islamic finance discourages excessive uncertainty (gharar) and speculation. By focusing on downside risk, the Sortino ratio supports prudent, ethical, and risk-aware investment decisions.
Key Takeaway
The Sortino ratio measures how efficiently an investment delivers returns while minimising losses, making it a more focused and investor-friendly risk measure than the Sharpe ratio.
Sortino Ratio
Meaning of Sortino Ratio
The Sortino ratio is a risk-adjusted performance measure that focuses only on downside risk. Unlike the Sharpe ratio, which considers total volatility (both upward and downward movements), the Sortino ratio looks only at harmful volatility—returns that fall below a minimum acceptable or required return.
Why Sortino Ratio Is Used
Investors are usually concerned about losses, not gains. The Sortino ratio was developed to address this concern by ignoring upside volatility and measuring only the risk of negative returns. This makes it more suitable for investors who want to avoid downside risk.
Required Return vs Risk-Free Return
In the Sortino ratio, the required return (also called the minimum acceptable return, MAR) is used instead of the risk-free return. The required return represents the investor’s target or minimum expected return.
Sortino Ratio Formula
Sortino Ratio = (Portfolio Return − Required Return) ÷ Downside Deviation
- Portfolio return: actual return earned
- Required return: minimum acceptable return
- Downside deviation: standard deviation of returns below the required return only
Simple Example
- Portfolio return = 10%
- Required return = 5%
- Downside deviation = 4%
Sortino ratio = (10% − 5%) ÷ 4% = 1.25
This means the investment generated 1.25 units of excess return for every unit of downside risk.
How to Interpret Sortino Ratio
A higher Sortino ratio indicates better downside risk-adjusted performance. It shows that the investment delivers higher returns while controlling losses. A lower Sortino ratio suggests that downside risk is high relative to returns.
Difference Between Sortino Ratio and Sharpe Ratio
- Sharpe ratio considers total risk (upside and downside volatility).
- Sortino ratio considers only downside risk.
- Sortino ratio is more suitable when investors are mainly concerned about losses rather than price fluctuations above the target return.
Relevance in Islamic Finance
The Sortino ratio aligns well with Islamic investment principles, as Islamic finance discourages excessive uncertainty (gharar) and speculation. By focusing on downside risk, the Sortino ratio supports prudent, ethical, and risk-aware investment decisions.
Key Takeaway
The Sortino ratio measures how efficiently an investment delivers returns while minimising losses, making it a more focused and investor-friendly risk measure than the Sharpe ratio.
0 Comments