Modelling Stock Returns with AR-GARCH Processes

• Autores: E. Ferenstein, M. Gasowski
• Localización: Sort: Statistics and Operations Research Transactions, ISSN 1696-2281, Vol. 28, Nº. 1, 2004, págs. 55-68
• Idioma: inglés
• Títulos paralelos:
  • Modelado de rentabilidades de acciones mediante procesos AR-GARCH.
• Enlaces
  • Texto completo (pdf)
• Resumen

  • Financial returns are often modelled as autoregressive time series with random disturbances having conditional heteroscedastic variances, especially with GARCH type processes. GARCH processes have been intensely studied in financial and econometric literature as risk models of many financial time series. Analyzing two data sets of stock prices we try to fit AR(1) processes with GARCH or EGARCH errors to the log returns. Moreover, hyperbolic or generalized error distributions occur to be good models of white noise distributions.

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