Econometric analysis of the Colombian oil sector from the perspective of the market efficiency hypothesis [Análisis econométrico del sector petrolero colombiano desde la perspectiva de la hipótesis de eficiencia de mercado]

A study on the Market Efficiency Theory in its weak and semi-strong form, for oil companies listed on the Colombia Stock Exchange is done, considering the effect of WTI in these. The article shows that only profitability series of Ecopetrol can be considered as random walk through a further transfor...

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Autores:

Tipo de recurso:

Fecha de publicación:

2017

Institución:

Universidad de Medellín

Repositorio:

Repositorio UDEM

Idioma:

por

OAI Identifier:

oai:repository.udem.edu.co:11407/4348

Acceso en línea:

http://hdl.handle.net/11407/4348

Palabra clave:

ARMA-GARCH model
Asset pricing
Market efficiency

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http://purl.org/coar/access_right/c_16ec