The Sortino ratio examines the downside risk of returns. It is calculated as the portfolio return minus the minimum acceptable return (MAR) divided by a standard deviation that only uses returns below the MAR. It is similar to the target semivariance. Both remaining responses refer to other measures of risk-adjusted performance. The Sharpe ratio divides the excess return above the risk-free rate by the standard deviation. An example of a risk-adjusted return on invested capital (RAROC) measure would be to divide the portfolio’s expected return by the VAR. The RoMAD (return over maximum drawdown) is the average portfolio return divided by the maximum drawdown. Drawdown refers to the percentage difference between the highest and lowest portfolio values during a period. | 
