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--vis three GARCH models (GARCH (1,1), GARCH-M (1,1) and EGARCH (1,1)) as well as the random walk model. The Kalman filter model …
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Recent research on time-varying systematic-risk (beta) modeling reveals significant advantages in utilizing daily financial data and unobserved-component models. This research proposes a state-space market model with conditional heteroscedastic errors, thus addressing the leptokurtosis of the...
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This paper investigates three techniques for the estimation of conditional timeâ€dependent betas: (a) a multivariate generalised ARCH approach; (b) a timeâ€varying beta market model approach suggested by Schwert and Seguin (1990); and (c) the Kalman filter technique. These approaches are...
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—are defined and derived by using a time-varying parameter model with a GARCH specification. It is found that both the structural …
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