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Semiparametric inference in a GARCH-in-mean model

Bent Jesper Christensen (), Christian Dahl () and Emma Iglesias ()

Journal of Econometrics, 2012, vol. 167, issue 2, 458-472

Abstract: A new semiparametric estimator for an empirical asset pricing model with general nonparametric risk-return tradeoff and GARCH-type underlying volatility is introduced. Based on the profile likelihood approach, it does not rely on any initial parametric estimator of the conditional mean function, and it is under stated conditions consistent, asymptotically normal, and efficient, i.e., it achieves the semiparametric lower bound. A sampling experiment provides finite sample comparisons with the parametric approach and the iterative semiparametric approach with parametric initial estimate of Conrad and Mammen (2008). An application to daily stock market returns suggests that the risk-return relation is indeed nonlinear.

Keywords: Efficiency bound; GARCH-M model; Profile likelihood; Risk-return relation; Semiparametric inference (search for similar items in EconPapers)
JEL-codes: C13 C14 C22 G12 (search for similar items in EconPapers)
Date: 2012
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Working Paper: Semiparametric Inference in a GARCH-in-Mean Model (2008) Downloads
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