A risk-adjusted performance metric defined as (strategy return – risk-free rate) divided by the standard deviation of returns. In MetaTrader tests the risk-free rate is assumed zero. A higher Sharpe indicates better reward per unit risk (volatility). Roughly, Sharpe ≥1 is considered acceptable, ≥2 good, ≥3 excellent. A Sharpe of 1.5 means the strategy’s returns are 1.5 standard deviations above a risk-free asset, implying relatively stable profitability.

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