Analyzing the Performance of Symmetrical and Asymmetrical GARCH Models and Presentation of the Optimal Model in Predicting Price Index Fluctuations and Cash Return of Tehran Stock Exchange Delaram Torabi, Akbar Bagheri*, Mohammad Hossein Fatehi Dabanloo, Zahra Houshmand Neghabi, Reza Khoshsima, 10.57647/j.amc.2025.090207 Requires Subscription PDF downloads: 27