This paper analyzes predictive regressions in a panel data setting. The standard fixed effects estimator suffers from a small sample bias, which is the analogue of the Stambaugh bias in time-series predictive regressions. Monte Carlo evidence shows that the bias and resulting size distortions can be severe. A new bias-corrected estimator is proposed, which is shown to work well in finite samples and to lead to approximately normally distributed t-statistics. Overall, the results show that the econometric issues associated with predictive regressions when using time-series data to a large extent also carry over to the panel case. The results are illustrated with an application to predictability in international stock indices.
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Randolph B. Cohen & Christopher Polk & Tuomo Vuolteenaho, 2003.
"The Value Spread,"
Journal of Finance,
American Finance Association, vol. 58(2), pages 609-642, 04.
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Randolph B. Cohen & Christopher Polk & Tuomo Vuolteenaho, 2001.
"The Value Spread,"
NBER Working Papers
8242, National Bureau of Economic Research, Inc.
[Downloadable!] (restricted)