A bootstrap approach for generalized Autocontour testing Implications for VIX forecast densities

João Henrique G. Mazzeu, Gloria Gonzalez-Rivera, Esther Ruiz () and Helena Veiga

Econometric Reviews, 2020, vol. 39, issue 10, 971-990

Abstract: We propose an extension of the Generalized Autocontour tests for dynamic specification (evaluation) of in-sample (out-of-sample) conditional densities. The new tests are based on probability integral transforms computed from bootstrap conditional densities that incorporate parameter uncertainty without relying on parametric assumptions of the error distribution. Their finite sample distributions are well approximated using standard asymptotic distributions while they are easy to implement and provide information about potential sources of misspecification. We apply the new tests to the Heterogeneous Autoregressive and the Multiplicative Error models of the VIX index and find strong evidence against the parametric assumptions of the conditional densities.

Date: 2020
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Working Paper: A Bootstrap Approach for Generalized Autocontour Testing. Implications for VIX Forecast Densities (2017)
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DOI: 10.1080/07474938.2020.1761150

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