Template-type: ReDif-Paper 1.0 Author-Name: Karabiyik, H. Author-workplace-name: Quantitative Economics Author-Name: Urbain, J.R.Y.J. Author-workplace-name: Quantitative Economics Author-Name: Westerlund, J. Author-workplace-name: Externe publicaties SBE Title: CCE estimation of factor-augmented regression models with more factors than observables Abstract: This paper considers estimation of factor-augmented panel data regression models with homogenous slope coefficients. One of the most popular approaches towards this end is the pooled common correlated effects (CCE) estimator of Pesaran (2006). For this estimator to be consistent at the usual sqrt-NT rate, where N and N denote the number of cross-section and time series observations, respectively, the number of factors cannot be larger than the number of observables. This is a problem in the typical application involving only a small number of regressors. The current paper proposes a simple extension to the CCE procedure by which the requirement can be relaxed. The CCE approach is based on taking the cross-section average of the observables as an estimator of the common factors. The idea put forth in the current paper is to consider not only the average but also other cross-section combinations. The asymptotic properties of the resulting combination-augmented CCE (C3E) estimator are provided and verified in small samples using Monte Carlo simulation. Series: GSBE Research Memoranda Creation-Date: 20140101 Number: 007 File-URL: https://cris.maastrichtuniversity.nl/ws/files/1445457/guid-318c01f7-57dc-41fa-ac7d-c7c0dc611fcb-ASSET1.0.pdf File-Format: application/pdf File-Size: 480405 Handle: Repec:unm:umagsb:2014007 DOI: 10.26481/umagsb.2014007