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The effect of realised volatility on stock returns risk estimates

  • Aurea Grane

    ()

  • Helena Veiga

    ()

In this paper, we estimate minimum capital risk requirements for short, long positions and three investment horizons, using the traditional GARCH model and two other GARCH-type models that incorporate the possibility of asymmetric responses of volatility to price changes; and, most importantly, we analyse the models performance when realised volatility is included as an explanatory variable into the models' variance equations. The results suggest that the inclusion of realised volatility improves the models forecastability and their capacity to calculate accurate measures of minimum capital risk requirements.

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File URL: http://e-archivo.uc3m.es/bitstream/10016/947/1/ws076316.pdf
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Paper provided by Universidad Carlos III, Departamento de Estadística y Econometría in its series Statistics and Econometrics Working Papers with number ws076316.

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Date of creation: Sep 2007
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Handle: RePEc:cte:wsrepe:ws076316
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