The Black-Litterman (BL) model has been proposed as an alternative to Markowitz's average-variance model for the structuring of financial asset portfolios, allowing the incorporation of perspectives of fundamental analysts and guaranteeing a high degree of diversification. This model is applied...

Se evalúa el rendimiento ex-dividendo en acciones colombianas entre 1999 y 2007, periodo que incluye la conformación en julio de 2001 de la Bolsa de Valores de Colombia, resultado de la integración de tres bolsas previamente existentes. Contrario a la hipótesis de eficiencia de mercado, se...

We investigate for the role of Foreigners, Local Institutions and Local individuals in days of Contagion in a set of six emerging markets from 2007 to 2016. We propose a new and intuitive continuous measure of Contagion based on the probability of a coincidence of daily negative returns in both...

Cross-sectional models positively relate firm information disclosure with stock liquidity, but dynamic models in news releases days show an opposite relation. We address this puzzle by studying the effects of information arrival on liquidity and its determinants. We use trade and quote data from...

Do all investor types contribute equally to volatility formation? Although stock volatility should ideally originate only from fundamental innovations, it is embedded into prices through the trading process. We compare the relative contributions of trading by local institutions, local...

We propose a method for event studies based on synthetic portfolios that provides a robust data-driven approach to build a credible counterfactual. The method is used to evaluate the effectiveness of volatility auctions using intraday data from the Colombian Stock Exchange. The results indicate...

Spanish Abstract:El modelo de Black-Litterman (BL) ha sido propuesto como alternativa al de media-varianza de Markowitz para la estructuración de portafolios de activos financieros, permitiendo incorporar perspectivas de analistas fundamentales y garantizando un alto grado de diversificación....

This paper examines whether growing up in areas with high homicide rates affects financial risk preferences. Our key conjecture is that individuals who have grown up in violent areas possess more risk averse financial preferences. We find support for this hypothesis using a unique dataset of...

Spanish Abstract: En los últimos 30 años el estudio del Behavioral Finance (“Finanzas comportamentales”)ha ganado importancia tanto en estudios académicos como en la práctica de las Finanzas. En este documento pretendo ofrecer una introducción al tema, orientada para estudiantes y...

Spanish Abstract: El estudio que se presenta permite mostrar evidencia sobre el importante crecimiento de la actividad bursátil del mercado accionario colombiano para la gran mayoría de acciones, durante el período 1997 a 2007. Los resultados demuestran que la fusión de las tres bolsas...