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Modeling Stock Prices without Knowing How to Induce Stationarity

Published online by Cambridge University Press:  11 February 2009

David N. DeJong  and
Charles H. Whiteman
David N. DeJong
Affiliation:
University of Pittsburgh
Charles H. Whiteman
Affiliation:
University of Iowa
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Abstract

Bayesian procedures for evaluating linear restrictions imposed by economic theory on dynamic econometric models are applied to a simple class of presentvalue models of stock prices. The procedures generate inferences that are not conditional on ancillary assumptions regarding the nature of the nonstationarity that characterizes the data. Inferences are influenced by prior views concerning nonstationarity, but these views are formally incorporated into the analysis, and alternative views are easily adopted. Viewed in light of relatively tight prior distributions that have proved useful in forecasting, the present-value model seems at odds with the data. Researchers less certain of the interaction between dividends and prices would find little reason to look beyond the present-value model.

Type
Articles
Information
Econometric Theory , Volume 10 , Issue 3-4 , August 1994 , pp. 701 - 719
Copyright
Copyright © Cambridge University Press 1994

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