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Technological Revolutions and Stock Prices

Author

Listed:
  • Lubo? P?tor
  • Pietro Veronesi

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. (JEL G12, L86, L92, N21, N22, N71, N72)

Suggested Citation

  • Lubo? P?tor & Pietro Veronesi, 2009. "Technological Revolutions and Stock Prices," American Economic Review, American Economic Association, vol. 99(4), pages 1451-1483, September.
    • Handle: RePEc:aea:aecrev:v:99:y:2009:i:4:p:1451-83
    DOI: 10.1257/aer.99.4.1451
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    More about this item

    JEL classification:

    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • L86 - Industrial Organization - - Industry Studies: Services - - - Information and Internet Services; Computer Software
    • L92 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Railroads and Other Surface Transportation
    • N21 - Economic History - - Financial Markets and Institutions - - - U.S.; Canada: Pre-1913
    • N22 - Economic History - - Financial Markets and Institutions - - - U.S.; Canada: 1913-
    • N71 - Economic History - - Economic History: Transport, International and Domestic Trade, Energy, and Other Services - - - U.S.; Canada: Pre-1913
    • N72 - Economic History - - Economic History: Transport, International and Domestic Trade, Energy, and Other Services - - - U.S.; Canada: 1913-

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