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Tarificación de bonos sobre catástrofes (cat bonds) con desencadenantes de índices de pérdidas. Modelación mediante un proceso de Ornstein-Uhlenbeck || Pricing Loss Index Triggered Cat Bonds. An Ornstein-Uhlenbeck Process-Based Model

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  • Pérez-Fructuoso, María José

    (Departamento de Economía y Administración de Empresas. Universidad a Distancia de Madrid (España))

Abstract

Este artículo propone un modelo aleatorio en tiempo continuo para calcular el índice de pérdidas desencadenante de los bonos sobre catástrofes a partir de la cuantía declarada de siniestros hasta el momento de su vencimiento. Bajo la hipótesis de que la cuantía total de una catástrofe se define como la suma de la cuantía declarada de siniestros y la cuantía de siniestros pendiente de declarar, modelizamos la dinámica lineal decreciente de esta última cuantía mediante un proceso browniano aditivo o proceso de Ornstein-Uhlenbeck. La cuantía declarada de siniestros, entonces, se obtiene por diferencia entre la cuantía total de los siniestros y la cuantía de siniestros pendiente de declarar. Finalmente, se comprueba la validez del modelo propuesto estimando sus parámetros fundamentales y contrastando la bondad del ajuste realizado sobre una muestra de series de datos de seis inundaciones ocurridas en diferentes localidades españolas propensas a sufrir este tipo de catástrofes. || This paper develops a continuous-time random model of loss index triggers for cat bonds on the basis of the loss amount incurred until their maturity. Assuming that total loss amount due to a catastrophe is defined as the sum of the incurred loss amount plus the incurred-but-not-yet reported loss amount, we model the decreasing linear dynamics of the latter amount by means of an additive Brownian process (or Ornstein Uhlenbeck process); and get the former by the difference between the total loss amount and the incurred-but-not-yet-reported loss amount. Finally, we test the validity of the model by estimating its core parameters and by contrasting the goodness of fit through a data series of six floods occurred in several Spanish cities prone to suffer such kind of catastrophes.

Suggested Citation

  • Pérez-Fructuoso, María José, 2017. "Tarificación de bonos sobre catástrofes (cat bonds) con desencadenantes de índices de pérdidas. Modelación mediante un proceso de Ornstein-Uhlenbeck || Pricing Loss Index Triggered Cat Bonds. An Ornst," Revista de Métodos Cuantitativos para la Economía y la Empresa = Journal of Quantitative Methods for Economics and Business Administration, Universidad Pablo de Olavide, Department of Quantitative Methods for Economics and Business Administration, vol. 24(1), pages 340-361, Diciembre.
  • Handle: RePEc:pab:rmcpee:v:24:y:2018:i:1:p:340-361
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    References listed on IDEAS

    as
    1. Nowak, Piotr & Romaniuk, Maciej, 2013. "Pricing and simulations of catastrophe bonds," Insurance: Mathematics and Economics, Elsevier, vol. 52(1), pages 18-28.
    2. repec:fth:geneec:99.01 is not listed on IDEAS
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    More about this item

    Keywords

    bonos sobre catástrofes; cuantía de siniestros pendiente de declarar; cuantía declarada de siniestros; tasa de declaración de siniestros; índice de pérdidas por catástrofes; proceso de Ornstein-Uhlenbeck; catastrophe bonds; incurred-but-not-yet-reported loss amount; incurred loss amount; claim reporting rate; loss index trigger; OrnsteinUhlenbeck process;
    All these keywords.

    JEL classification:

    • C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation
    • C52 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Evaluation, Validation, and Selection

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