Gomez Osorio, Álvaro .; López Pereira, J. M. .; Rodríguez Negrete, A. IMPACT OF COVID-19 ON OPTIMAL RISK, PROFITABILITY AND PORTFOLIOS AMONG COLCAP INDEX STOCKS. Semest. Econ. 2023, 26 (61), 1-24. https://doi.org/10.22395/seec.v26n61a4312.