Linear and nonlinear interest rate sensitivity of Spanish banks

  1. Ballester, Laura
  2. Ferrer Lapeña, Román
  3. González Baixauli, Cristóbal
Revista:
The Spanish Review of Financial Economics

ISSN: 2173-1268

Año de publicación: 2011

Volumen: 9

Número: 2

Páginas: 35-48

Tipo: Artículo

DOI: 10.1016/J.SRFE.2011.09.002 DIALNET GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: The Spanish Review of Financial Economics

Resumen

Interest rate risk is one of the major financial risks faced by banks due to the very nature of the banking business. The most common approach in the literature has been to estimate the impact of interest rate risk on banks using a simple linear regression model. However, the relationship between interest rate changes and bank stock returns does not need to be exclusively linear. This article provides a comprehensive analysis of the interest rate exposure of the Spanish banking industry employing both parametric and non-parametric estimation methods. Its main contribution is to use, for the first time in the context of banks� interest rate risk, a nonparametric regression technique that avoids the assumption of a specific functional form. On the one hand, it is found that the Spanish banking sector exhibits a remarkable degree of interest rate exposure, although the impact of interest rate changes on bank, stock returns have significantly declined following the introduction of the euro. Further, a pattern of positive exposure emerges during the post-euro period. On the other hand, the results corresponding to the nonparametric model support the expansion of the conventional linear model in an attempt to gain a greater insight into the actual degree of exposure.

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