NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Comovements in Stock Prices and Comovements in Dividends

Robert J. Shiller

NBER Working Paper No. 2846
Issued in February 1989
NBER Program(s):   ME

Simple efficient markets models imply that the covariance between prices of speculative assets cannot exceed the covariance between their respective fundamentals unless there is positive information pooling. Positive information pooling occurs when there is more information, in a sense defined here, about the aggregate of the fundamentals than there is about the individual fundamentals. With constant discount rates, the covariance between prices (detrended by dividing by a moving average of lagged dividends) in the U. K. and the U. S. exceeds the covariance of the measure of fundamentals, and there is no evidence of positive information pooling. Regression tests of forecast errors in one country on a real price variable in another country show significantly negative coefficients. When the present value formula uses short rates to discount, there is less evidence of excess comovement.

download in pdf format
   (164 K)

download in djvu format
   (110 K)

email paper

Machine-readable bibliographic record - MARC, RIS, BibTeX

Document Object Identifier (DOI): 10.3386/w2846

Published: Journal of Finance, vol.44, pp719-729, July 1989 citation courtesy of

 
Publications
Activities
Meetings
NBER Videos
Themes
Data
People
About

National Bureau of Economic Research, 1050 Massachusetts Ave., Cambridge, MA 02138; 617-868-3900; email: info@nber.org

Contact Us