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    risk

    Sharpe Ratio

    A reward-for-risk measure showing how much excess return you earned per unit of total volatility.

    Defined as (return minus risk-free rate) over volatility. Higher is better. A Sharpe above 1 is generally considered good, above 2 very good. The original metric was introduced by William Sharpe in 1966.

    Formula

    Sharpe = \frac{R_p - R_f}{\sigma_p}

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