Interpreting the predictive power of the consumption-wealth ratio

Jaehoon Hahn, Hangyong Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Lettau and Ludvigson [Lettau, M., Ludvigson, S.C., 2001a. Consumption, aggregate wealth and expected stock returns. Journal of Finance 56, 815-849] find that the estimated consumption-wealth ratio (cay) is a strong predictor of U.S. stock returns, while Brennan and Xia [Brennan, M.J., Xia, Y., 2005. tay's as good as cay. Finance Research Letters 2, 1-14] argue that the predictive power of cay arises from a look-ahead bias. In a unified framework, we examine how the presence of deterministic time trends affects the estimation and forecasting power of cay. We show that ignoring the presence of a deterministic time trend in estimating the cointegrating relationship among consumption, asset wealth, and labor income leads to a biased estimate of the consumption-wealth ratio. In the presence of a deterministic time trend, cay is a combination of the highly persistent bias component and the unbiased cointegrating residual, and most of the predictive power of cay is attributable to the bias component, casting doubt on the robustness of the forecasting power of cay.

Original languageEnglish
Pages (from-to)183-202
Number of pages20
JournalJournal of Empirical Finance
Volume13
Issue number2
DOIs
Publication statusPublished - 2006 Mar 1

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Consumption-wealth ratio
Predictive power
Time trends
Wealth
Stock returns
Finance
Aggregate consumption
Predictors
Labor income
Assets
Robustness

All Science Journal Classification (ASJC) codes

  • Finance
  • Economics and Econometrics

Cite this

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Interpreting the predictive power of the consumption-wealth ratio. / Hahn, Jaehoon; Lee, Hangyong.

In: Journal of Empirical Finance, Vol. 13, No. 2, 01.03.2006, p. 183-202.

Research output: Contribution to journalArticle

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