Abstracts
Abstract
Using a Value-at-Risk (VaR) approach and a sample of 2082 stocks on the 2004-2015 period, we measure the impact of SR dimensions (measured by Vigeo ratings) on the risk level and the risk dynamic of stock returns and on their risk predictability. We conclude that good overall socially responsible (SR) ratings reduce the downside risk level of stock returns. We find also that high-rated companies in HR (Human Resources), ENV (Environment), BB (Business Behaviour), CIN (Community Involvement), and HRTS (Human Rights at Workplaces) dimensions better absorb volatility shocks.
Keywords:
- Social Ratings,
- GARCH,
- Predictability Risk,
- Times Series Models,
- Value-at-Risk (VaR)
Résumé
En utilisant une approche par la Value-at-Risk (VaR) et un échantillon de 2082 actions sur la période 2004-2015, nous mesurons l’impact des dimensions socialement responsables (mesurées par les ratings Vigeo) sur le niveau de risque et la dynamique des risques des rentabilités d’action, ainsi que leur prédictibilité du risque. Nous concluons que le rating global RSE réduit le risque downside de la rentabilité des titres. Nous trouvons également que les entreprises bien notées dans les dimensions HR (Ressources Humaines), ENV (Environnement), BB (Comportement sur les Marchés), CIN (Engagement Communautaire), and HRTS (Droits Humains au Travail) absorbent mieux les chocs de volatilité.
Mots-clés :
- Ratings sociaux,
- GARCH,
- prédictibilité du risque,
- Modèles Time Series,
- Value-at-Risk (Var)
Resumen
Usando un enfoque de Value-at-Risk (VaR) y una muestra de 2.082 acciones durante 2004-2015, medimos el impacto de las dimensiones socialmente responsables (medidas con Vigeo ratings) en el nivel de riesgo y la dinámica de los riesgos de la rentabilidad de la acción, así como su predictibilidad del riesgo. Concluimos que la calificación general de CSR reduce el riesgo « downside ». También pensamos que las compañías que están altamente calificadas en HR (Recursos Humanos), ENV (Ambiente), BB (Comportamiento en los Mercados), CIN (Compromiso con la Comunidad) y HRTS (Derechos Humanos en el Trabajo) absorben mejor las crisis de volatilidad.
Palabras clave:
- Clasificaciones sociales,
- GARCH,
- Previsibilidad del riesgo,
- Modelos Time Series,
- Value-at-Risk (Var)
Appendices
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