Reflexión sobre la aplicabilidad del modelo de Makowitz en la gestión de portafolios de inversión; una propuesta alternativa al cálculo de la covarianza entre dos activos financieros, para seleccionar el portafolio óptimo.

Abstract

This project emphasizes three specific objectives regarding portfolio theory, the first is to show, how the predictive accuracy Makowitz model behaves according to the size of the data series, the second is to establish the relationship between the length of the data series and the real portfolio performance, finally, the authors propose an alternative way to calculate the covariance between two financial assets and then contrast the obtained results with conventional calculation results. The results show a greater predictive pressure using sixty data than using thirty data; however thirty data provides on average a higher real return.