GOMEZ OSORIO, Álvaro; LÓPEZ PEREIRA, Jorge Mario; RODRÍGUEZ NEGRETE, Anderson. IMPACT OF COVID-19 ON OPTIMAL RISK, PROFITABILITY AND PORTFOLIOS AMONG COLCAP INDEX STOCKS. Semestre Económico, [S. l.], v. 26, n. 61, p. 1–24, 2023. DOI: 10.22395/seec.v26n61a4312. Disponível em: https://revistas.udem.edu.co/index.php/economico/article/view/4312. Acesso em: 22 jun. 2026.