The Sharpe ratio is a measure of the performance of an investment compared to a risk-free asset, after adjusting for its risk. It represents the average return earned in excess of the risk-free rate per unit of volatility or total risk. The higher the Sharpe ratio, the better the investment's risk-adjusted performance. The formula for the Sharpe ratio is: \[ \text{Sharpe Ratio} = \frac{\text{Expected Portfolio Return} - \text{Risk-Free Rate}}{\text{Standard Deviation of Portfolio Return}} \] This ratio was developed by Nobel laureate William F. Sharpe. 夏普比率是衡量投资相对于无风险资产的表现，在调整风险后的一种方式。它代表了每单位波动性或总风险所获得的平均回报超出无风险利率的程度。夏普比率越高，投资的风险调整后的表现就越好。夏普比率的计算公式为： \[ \text{夏普比率} = \frac{\text{预期投资组合回报} - \text{无风险利率}}{\text{投资组合回报的标准差}} \] 这个比率是由诺贝尔奖获得者威廉·F·夏普开发的。 read more >>

The Sharpe ratio is the average return earned in excess of the risk-free rate per unit of volatility or total risk. ... Generally, the greater the value of the Sharpe ratio, the more attractive the risk-adjusted return. The Sharpe Ratio was developed by Nobel laureate William F. Sharpe.read more >>