Khosravi, R. ., Peikfalak, J., & Fattahi Nafchi , H. . (2026). The Role of Fundamental Factors in Optimal Stock Portfolio Formation Using the Fama–French Five-Factor Model with an Emphasis on Data Mining: Evidence from Pharmaceutical Companies Listed on the Tehran Stock Exchange. Business, Marketing, and Finance Open, 1-20. https://bmfopen.com/index.php/bmfopen/article/view/613