NKECHUKWU, G. C.; IFENKWE, G. M.; ONUKA, N. . An Evaluation of Markowitz’s Portfolio Theory and its Applicability in Nigeria’s Investment Environment: : An Empirical Analysis (2010–2025). JOURNAL OF EMERGING TRENDS IN MANAGEMENT SCIENCES AND ENTREPRENEURSHIP, [S. l.], v. 8, n. 2, p. 192–200, 2026. Disponível em: https://jetmase.com/index.php/jetmase/article/view/226. Acesso em: 13 nov. 2026.