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Eficiencia de mercado y aplicación de test de estacionariedad al modelo de valoración CAPM en el mercado bursátil chileno

Authors: González, Pedro Antonio;

Eficiencia de mercado y aplicación de test de estacionariedad al modelo de valoración CAPM en el mercado bursátil chileno

Abstract

Los modelos de valoración de activos más reconocidos por la teoría y la práctica como el CAPM Y EL APT presumen que los mercados financieros son eficientes. Esta suposición ha evolucionado con el paso del tiempo encontrándose una amplia diversidad en la eficiencia de los mercados asociada al concepto de igualdad de condiciones de información, pero también dependiendo del nivel de desarrollo o tipo de región donde se realiza el estudio. Así, Ojah y Karamera (1999) no rechazan la eficiencia en los mercados de Argentina, Brasil, Chile y Méjico para el periodo 87-97, mientras otros trabajos encuentran para estos mismos mercados que no hay eficiencia (Urrutia 1995). Este estudio realiza un análisis de las series de tiempo en el mercado financiero chileno, entre los años 2007 y 2017 con el fin de probar la hipótesis de eficiencia. A partir del modelo de valoración CAPM (Capital Asset Pricing Model) obtenemos las correspondientes regresiones para determinar si los precios de las acciones son estacionarios o poseen características de camino aleatorio y la prima de riesgo de la cartera El trabajo somete a un test de estacionariedad este modelo. Para dicho análisis el modelo se someterá a diferentes pruebas, tanto para activos individuales como para carteras de activos.

The asset valuation models most recognized by theory and practice such as CAPM and APT presume that financial markets are efficient. This assumption has evolved over time, finding a wide diversity in the efficiency of the markets associated with the concept of equality of information conditions, but also depending on the level of development or type of region where the study is carried out. Thus, Ojah and Karamera (1999) do not reject the efficiency in the markets of Argentina, Brazil, Chile and Mexico for the period 87-97, while other works find for these same markets that there is no efficiency (Urrutia 1995). This study analyzes the time series in the Chilean financial market between 2007 and 2017 in order to test the efficiency hypothesis. Based on the CAPM (Capital Asset Pricing Model) valuation model, we will obtain the corresponding regressions to determine if the stock prices are stationary or have random path characteristics and the risk premium of the portfolio. The work applies this model to a stationarity test. For this analysis, the model will be subject to different tests, both for individual assets and asset portfolios.

Keywords

Finances -- Xile, Valoración CAPM, CAPM (Capital Asset Pricing Model), Borsa de valors -- Xile

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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