Technological Revolutions and Stock Prices

50 Pages Posted: 6 Oct 2006 Last revised: 14 Jun 2021

See all articles by Lubos Pastor

Lubos Pastor

University of Chicago - Booth School of Business; Centre for Economic Policy Research (CEPR); National Bureau of Economic Research (NBER)

Pietro Veronesi

University of Chicago - Booth School of Business; Centre for Economic Policy Research (CEPR); National Bureau of Economic Research (NBER)

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Date Written: December 2005

Abstract

We develop a general equilibrium model in which stock prices of innovative firms exhibit "bubbles" during technological revolutions. In the model, the average productivity of a new technology is uncertain and subject to learning. During technological revolutions, the nature of this uncertainty changes from idiosyncratic to systematic. The resulting "bubbles" in stock prices are observable ex post but unpredictable ex ante, and they are most pronounced for technologies characterized by high uncertainty and fast adoption. We find empirical support for the model's predictions in 1830-1861 and 1992-2005 when the railroad and Internet technologies spread in the United States.

Suggested Citation

Pastor, Lubos and Veronesi, Pietro, Technological Revolutions and Stock Prices (December 2005). Available at SSRN: https://ssrn.com/abstract=875727

Lubos Pastor (Contact Author)

University of Chicago - Booth School of Business ( email )

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Centre for Economic Policy Research (CEPR)

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National Bureau of Economic Research (NBER)

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Pietro Veronesi

University of Chicago - Booth School of Business ( email )

5807 S. Woodlawn Avenue
Chicago, IL 60637
United States
773-702-6348 (Phone)
773-702-0458 (Fax)

Centre for Economic Policy Research (CEPR)

London
United Kingdom

National Bureau of Economic Research (NBER)

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

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