List of Articles risk models Open Access Article Abstract Page Full-Text 1 - THE TORQUE COMPARISON OF THE EXTREME DISTRIBUTION MODELS AND THE DIFFERENCE IN THE RATIO OF FAILURE PATTERNS OF DIFFERENT TIME MODELS OF TEHRAN STOCK EXCHANGE Ali Rezaian Hamidreza Vakilifard Maryam Khalili Araghi Open Access Article Abstract Page Full-Text 2 - Risk and Return Properties of Portfolios Based on Directional Forecasts Vahid Rooholelm