夏普比率是預期回報率減去無風險利率後再除以波動率，表示每單位風險的超額回報。
The Sharpe ratio is expected return minus the risk-free rate, divided by volatility, expressing excess return per unit of risk.
夏普比率是預期回報率減去無風險利率後再除以波動率，表示每單位風險的超額回報。
The Sharpe ratio is expected return minus the risk-free rate, divided by volatility, expressing excess return per unit of risk.