I. TheSortino ratio is more appropriate for asymmetrical return distributions.
II. TheSortino ratio compares the portfolio return to the return of a benchmark portfolio.
III. TheSortino ratio allows one to evaluate portfolios obtained through an optimization algorithm that uses variance as a risk metric.
IV. TheSortino ratio is defined on the same principles as the Sharpe ratio, but the Sortino ratio replaces the risk free rate with the minimum acceptable return and the standard deviation of returns with the standard deviation of returns below the minimum acceptable return.