%0 Journal Article %T Modelos de precios de los activos: un ejercicio comparativo basado en redes neuronales aplicado al mercado de valores colombiano %A Charle Augusto Londo£¿o Henao %A Yaneth Mar¨ªa Cuan Jaramillo %J Lecturas de Econom¨ªa %D 2011 %I Universidad de Antioquia %X This study seeks to evaluate the effectiveness that variables like firm size and book-to-market ratio¡ªpresent in the model of Fama and French¡ªhave to capture the average expected return on assets, ascompared to macroeconomic fundamentals or the market index. For this purpose, we used an artificial neural network model (ANN), which departs from a structure of non-linear estimation to capture some irregularities that characterize financial markets. We found that the Fama and French model accounts for the conditions of the Colombian stock market better, which suggests the importance of microeconomic risk factors to explain asset returns. %K Asset pricing mode %K financial and macroeconomic variabl %K stock marke %K artificial neural networks. %U http://aprendeenlinea.udea.edu.co/revistas/index.php/lecturasdeeconomia/article/view/11476/10472