Sharpe ratio

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Measures the performance of an investment compared to a risk-free asset, after adjusting for its risk. This is to help investors understand the return of an investment compared to its risk.

Sharpe ratio = (Rp – Rf) / σp

Rp : return of portfolio

Rf: risk-free rate

σp: portfolio standard deviation (measure of portfolio risk)

Compare: Roy’s safety-first ratio