In this paper we investigate portfolio coskewness using a quadratic market model as return generating process. It is shown that portfolios of small (large) firms have negative (positive) coskewness with market. An asset pricing model including coskewness is tested through the restrictions it...

This paper analyzes the determinants of interest margins in the Colombian Financial System. Based on the model by Ho and Saun- ders (1981), interest margins are modelled as a function of the pure spread and bank-speci¯c institutional imperfections using quarterly data for the period...

The financial crisis of the late 2000's highlighted the importance of strengthening risk management systems in financial markets. Consequently, an increasing interest in strategies to quantify risk under extreme scenarios has spawned. One of such techniques is CrashMetrics, a methodology for...

We propose a novel estimator for the stochastic discount factor (SDF) in a panel-data context. Under general conditions it depends exclusively on appropriate averages of asset returns, and its computation is a direct exercise, as long as one has enough observations to our asymptotic results. We...

Informational constraints may turn the Merton Model for corporate credit risk impractical. Applying this framework to the Colombian financial sector is limited to four stock-market-listed firms; more than a hundred banking and non-banking firms are not listed. Within the same framework, firms’...

We study how heterogeneous beliefs affect returns and examine whether heterogeneous beliefs are a priced factor in traditional asset pricing models. To accomplish this task, we suggest new empirical measures based on the disagreement among analysts about expected (short-term and long-term)...

Most investors purchase securities knowing they will resell those securities in the future. Uncertainty about the preferences of future trading counter-parties causes randomness in future resale prices that we call liquidity risk. It is natural to suppose that investors are asymmetrically...

The structure of many models in economics and finance depends on majorization properties of convolutions of distributions. In this paper, we analyze robustness of these properties and the models based on them to heavy-tailedness assumptions. We show, in particular, that majorization properties...

In Colombia, the exposition to market risk has increased significantly since 2009. Nonetheless, the risk codependence among agents has not been analyzed yet from the perspective of this risk. Therefore, this paper presents an approach to estimate such relevance based on CoVaR and quantile...

En este trabajo se analizan algunos aspectos de la regulación relacionada con el manejo del riesgo de mercado establecida por la Superintendencia Financiera de Colombia, donde se propone el valor en riesgo (VaR) como la medida para cuantificar este tipo de riesgo. No obstante, esta regulación...