In this paper, we develop a two-step maximum likelihood estimator of time-varying loadings in high-dimensional factor models. We specify the loadings to evolve as stationary vector autoregressions (VAR) and show that consistent estimates of the loadings parameters can be obtained. In the first step, principal components are extracted from the data to form factor estimates. In the second step, the parameters of the loadings VARs are estimated as a set of linear regression models with time-varying coefficients. We document the finite-sample properties of the maximum likelihood estimator through an extensive simulation study and illustrate the empirical relevance of the time-varying loadings structure using a large quarterly dataset for the US economy.

(2019). Consistent Estimation of Time-Varying Loadings in High-Dimensional Factor Models [journal article - articolo]. In JOURNAL OF ECONOMETRICS. Retrieved from http://hdl.handle.net/10446/134368

Consistent Estimation of Time-Varying Loadings in High-Dimensional Factor Models

Urga, Giovanni
2019

Abstract

In this paper, we develop a two-step maximum likelihood estimator of time-varying loadings in high-dimensional factor models. We specify the loadings to evolve as stationary vector autoregressions (VAR) and show that consistent estimates of the loadings parameters can be obtained. In the first step, principal components are extracted from the data to form factor estimates. In the second step, the parameters of the loadings VARs are estimated as a set of linear regression models with time-varying coefficients. We document the finite-sample properties of the maximum likelihood estimator through an extensive simulation study and illustrate the empirical relevance of the time-varying loadings structure using a large quarterly dataset for the US economy.
articolo
Mikkelsen, Jakob Guldbæk; Hillebrand, Eric; Urga, Giovanni
(2019). Consistent Estimation of Time-Varying Loadings in High-Dimensional Factor Models [journal article - articolo]. In JOURNAL OF ECONOMETRICS. Retrieved from http://hdl.handle.net/10446/134368
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