TY  - JOUR 
TI  - Intraday-patterns in the Colombian Exchange Market Index and VaR: Evaluation of Different Approaches
PB  - Universidad Nacional de Colombia.
PY  - 2012
issn 0120-1751
AB  - This paper evaluates the performance of 16 different parametric, non-parametric and one semi-parametric specifications to calculate the Value at Risk (VaR) for the Colombian Exchange Market Index (IGBC). Using high frequency data (10-minute returns), we model the variance of the returns using GARCH and TGARCH models, that take in account the leverage effect, the day-of-the-week effect, and the hour-of-the-day effect. We estimate those models under two assumptions regarding returns behavior: Normal distribution and t distribution. This exercise is performed using two different ten-minute intraday samples: 2006-2007 and 2008-2009. For the first sample, we found that the best model is a TGARCH(1,1) without day-of the week or hour-of-the-day effects. For the 2008-2009 sample, we found that the model with the correct conditional VaR coverage would be the GARCH(1,1) with the day-of-the-week effect, and the hour-of-the-day effect. Both methods perform better under the t distribution assumption.
KW  - Leverage
KW  - Finance
KW  - Apalancamiento
KW  - Estimación de riesgo
KW  - Finanzas
KW  - Econonomía
KW  - Economics
UR  - http://hdl.handle.net/10906/79122
ER  -