It is well known that Markowitz Portfolio Optimization often leads to unreasonable and unbalanced portfolios that are optimal in-sample but perform very poorly out-of-sample. There is a strong relationship between these poor returns and the fact that covariance matrices that are used within the...

This exploratory study identifies key pillars on which innovative business models rely in the Latin American retail landscape. First, using qualitative research methods, we delve into the minds of Latin America's emerging consumers to uncover their needs and paradigms. In a region where retail...

The aim of this work is to establish an interesting connection between the behavior of economic agents by means of complex systems approach and the long memory features that generally occur in a wide set of time series found in economic/financial problems. It is shown that heterogeneity between...

Affirmative action in higher education can lead to mismatch, where students admitted through preferential treatment struggle academically due to inadequate preparation before college. Although some students may face initial challenges, by providing access to quality education for talented...