A New Test on Asset Return Predictability with Structural Breaks
提出一种基于经验似然的检验方法，允许在未知日期发生结构突变，用于判断资产收益是否可预测，对金融经济学和计量经济学研究者有参考价值。
Abstract This article considers predictive regressions in which a structural break is allowed on an unknown date. We establish novel testing procedures for asset return predictability using empirical likelihood (EL) methods based on weighted score equations. The theoretical results are useful in practice because our unified framework does not require distinguishing whether the predictor variables are stationary or non-stationary. Monte Carlo simulation studies show that the EL-based tests perform well in terms of size and power in finite samples. Finally, as an empirical analysis, we test the predictability of the monthly S&P 500 value-weighted log excess return using various predictor variables.