Share portfolio advisory: Use of the Markowitz method to optimize the risk/return ratio in individual investor shares portfolio. Research, Society and Development, [S. l.], v. 11, n. 2, p. e26011225921, 2022. DOI: 10.33448/rsd-v11i2.25921. Disponível em: https://rsdjournal.org/rsd/article/view/25921. Acesso em: 6 dec. 2025.