Sharpe ratio

The Sharpe ratio is a measure of risk-adjusted performance of an investment asset, or a trading strategy. It is defined as:

S = {{<R> - R_f}\over \sigma},

where < R > is the expected value of asset return, Rf is an expected return of another "standard" asset, such as the risk free rate of return, and σ is the standard deviation of the asset returns.

The ratio was developed by William Forsyth Sharpe.

See also


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