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El teorema de la separación de Tobin: información del primer semestre de 2008 del mercado accionario colombiano.

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  • Additional Information
    • Alternate Title:
      Tobin's Separation Theorem: Information from the Colombian Stock Market for the First Half of 2008.
    • Subject Terms:
    • Abstract:
      This paper shows a special situation where a portfolio created based on Tobin's separation theorem does not match the Markowitz efficient set. Next a review of Markowitz's portfolio selection theory is offered, followed by a review of Tobin's separation theorem. Next, these models are used as tools for the individual investor with data on the Colombian stock market of the first half of 2008. Finally, the conclusions are shown. It is important to emphasize that the objective of this paper is not to make predictions upon expected returns, variances and covariances of these returns, nor to suggest an optimal portfolio for an investor with a particular utility function, but to expose a concrete scenario in which Tobin's theorem leads to a portfolio located outside Markowitz's efficient set. [ABSTRACT FROM AUTHOR]
    • Abstract:
      El artículo muestra una situación especial en donde el portafolio surgido del teorema de la separación de Tobin no se encuentra en la frontera eficiente de Markowitz. El desarrollo del mismo inicia con una revisión del modelo de selección de carteras de Harry Markowitz seguido del teorema de la separación de Tobin. A continuación, se hace uso de los modelos como herramientas para el inversionista individual, con datos sobre el mercado accionario colombiano del primer semestre de 2008. Finalmente se muestran las conclusiones. Es importante enfatizar que el objetivo del artículo no es hacer predicciones sobre los rendimientos esperados, varianzas o covarianzas de los mismos rendimientos, ni sugerir un portafolio óptimo para un inversionista con una función de utilidad particular, sino mostrar un escenario concreto en el que el teorema de la separación de Tobin conlleva a un portafolio ubicado por fuera de la frontera eficiente. [ABSTRACT FROM AUTHOR]
    • Abstract:
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