Small-sample tests for stock return predictability with possibly non-stationary regressors and GARCH-type effects
可能非平稳回归变量与 GARCH 型效应下的股票收益可预测性小样本检验AI 解读 ↓
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可能非平稳回归变量与 GARCH 型效应下的股票收益可预测性小样本检验AI 解读 ↓
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We develop a simulation-based procedure to test for stock return predictability with multiple regressors. The process governing the regressors is left completely free and the test procedure remains valid in small samples even in the presence of non-normalities and GARCH-type effects in the stock returns. The usefulness of the new procedure is demonstrated in a simulation study and by examining the ability of a group of financial variables to predict excess stock returns. We find some evidence of predictability during the period 1948–2014, driven entirely by the term spread. This empirical evidence, however, is much weaker over subsamples.