Forecasting the weekly time-varying beta of UK firms: GARCH models vs. Kalman filter method

Taufiq Choudhry and Hao Wu

European Journal of Finance, 2009, vol. 15, issue 4, pages 437-444

Abstract: This paper investigates the forecasting ability of three different Generalised Autoregressive Conditional Heteroscedasticity (GARCH) models and the Kalman filter method. The three GARCH models applied are: bivariate GARCH, BEKK GARCH, and GARCH-GJR. Forecast errors based on 20 UK company's weekly stock return (based on time-varying beta) forecasts are employed to evaluate the out-of-sample forecasting ability of both the GARCH models and the Kalman method. Measures of forecast errors overwhelmingly support the Kalman filter approach. Among the GARCH models, GJR appears to provide somewhat more accurate forecasts than the two other GARCH models.

Keywords: forecasting; Kalman filter; GARCH; volatility (search for similar items in EconPapers)
Date: 2009

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