Zlatev, Stoyan; Milev, Mariyan; Velinova-Sokolova, Nadya - In: International Journal of Financial Studies : open … 14 (2026) 5, pp. 1-21
In 1952, Harry Markowitz established the foundations of Modern Portfolio Theory by introducing a mean-variance framework for constructing investment portfolios that optimize the trade-off between risk and expected return. Expanding upon this classical framework, this paper develops an analytical...