On the use of optimization models for portfolio selection: A review and some computational resultsOn the use of optimization models for portfolio selection: A review and some computational results Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-10-261994enPortfolio theory deals with the question of how to allocate resources among several competing alternatives (stocks, bonds), many of which have an unknown outcome. In this paper we provide an overview of different portfolio models with emphasis on the corresponding optimization problems. For the classical Markowitz mean-variance model we present computational results, applying a dual algorithm for constrained optimization.http://creativecommons.org/licenses/by/4.0/Computational Economics47227-244 Zopounidis Konstantinos Ζοπουνιδης Κωνσταντινος Pardalos, P. M Mattias Sandström Kluwer Economy