Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/62168
Authors: 
Caporale, Guglielmo Maria
Gil-Alaña, Luis A.
Year of Publication: 
2000
Series/Report no.: 
Discussion Papers, Interdisciplinary Research Project 373: Quantification and Simulation of Economic Processes 2000,15
Abstract: 
This paper tests the validity of Present Value (PV) models of stock prices by employing a two-step strategy for testing the null hypothesis of no cointegration against alternatives which are fractionally cointegrated. Monte Carlo simulations are conducted to evaluate the power and size properties of this test, which is shown to outperform existing ones, and to compute appropriate critical values for finite samples. It is found that stock prices and dividends are both I(1) nonstationary series, but they are fractionally cointegrated. This implies that, although there exists a long-run relationship which is consistent with PV models, the equilibrium errors exhibit slow mean reversion. As the error correction term possesses long memory, deviations from equilibrium are highly persistent.
Subjects: 
fractional integration
Efficient Markets Hypothesis (EMH)
Present Value (PV) models
fractional cointegration
JEL: 
C32
C22
G12
G14
Persistent Identifier of the first edition: 
Document Type: 
Working Paper

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