Using a clustering procedure, we classify Italian funds ex-post on the basis of the composition of their portfolios and find that the optimal number of clusters is equal to 4. The four groups which result from the statistical classification closely match the 4-level aggregation of the 20 ex-ante...

We propose a portfolio selection model based on a class of monotone preferences that coincide with mean-variance preferences on their domain of monotonicity, but differ where mean-variance preferences fail to be monotone and are therefore not economically meaningful. The functional associated to...

The act of choosing can influence maximizing behaviour for at least two distinct reasons: 1) process significance and 2) decisional inescapability. The constructive programme of the paper is combined with critical appraisal of the implications of these concerns for rational decisions about...