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Modelos GARCH y la tasa de interés nominal de corto plazo en Chile: Una evidencia empírica

Author

Listed:
  • Parisi, Franco

    (Department of Banking and Finance, University of Georgia)

  • Parisi, Antonino

    (Ilades-Loyola College)

Abstract

This paper uses GARCH models to analize the relation between short term interest rates levels and their volatility. The finance literature show that this relation is not only positive but critical to explain the dynamics of nominal interest rate changes in the short run. However, when considering conditional volatility in GARCH models such relation vanishes for the Chilean case, wich is a similar result than other countries. Furthermore, these results are consistent when combining BHK (1996) and CKLS (1992) models. This does not mean volatility is unimportant in the estimation of the dynamics of short term interest rates in Chile, but that it has a non-direct impact, throug its conditional mean innovations. The explanation power of the new models is superior to Parisi (1998) and they are robust, even when the realinterest rate remain constant. The mean reversal phenomena obtained in previous studies is maintained, which means a strong grip on interest rates by the central bank. This instruments is a tool in attaining annual inflation targets.// En este artículo estudiamos la relación entre la tasa de interés de corto plazo con su volatilidad, por medio de modelos GARCH. La bibliografía financiera indica que esta relación no sólo es positiva, sino también determinante al explicar la dinámica del cambio en la tasa nominal de corto plazo. Sin embargo, al momento de considerar una volatilidad condicional, por medio de los modelos GARCH, dicha relación desaparece para el caso chileno, resultado similar a los logrados en otras economías. Más aún, estos resultados son congruentes al combinar los modelos sugeridos por Brenner, Harjes y Kroner (1996) con los de Chjan Karolyi Longstaff y Sanders (1992). Lo anterior no significa que la volatilidad deje de ser importante al momento de estimar la dinámica de la tasa de interés de corto plazo en Chile, sino que su efecto en el nivel de ésta es indirecto, a través de las innovaciones de su media condicional. Asimismo, la explicabilidad de los modelos estudiados aquí son mayores que los arrojados en Parisi (1998). Además estos modelos son robustos, incluso en situaciones en que la tasa de interés real de mediano plazo se mantuvo constante. Cabe recordar que el fenómeno de reversión a la media identificado en otras investigaciones en Chile se mantiene en nuestro caso, lo que demuestra el fuerte control de la tasa de interés por parte del Banco Central, el cual la utiliza como instrumento para lograr la meta de inflación anual, autofijada por dicha autoridad.

Suggested Citation

  • Parisi, Franco & Parisi, Antonino, 1998. "Modelos GARCH y la tasa de interés nominal de corto plazo en Chile: Una evidencia empírica," El Trimestre Económico, Fondo de Cultura Económica, vol. 65(260), pages 519-534, : octubre.
  • Handle: RePEc:elt:journl:v:65:y:1998:i:260:p:519-534
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    Cited by:

    1. Muñoz, Jorge & Recabal, Claudio & Acuña, Andrés, 2007. "La política monetaria y su impacto sobre los retornos reales del mercado bursátil chileno
      [Monetary Policy and its impact over the Chilean stock market's real returns]
      ," MPRA Paper 14392, University Library of Munich, Germany.

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