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La bulle « Internet », un remake de la bulle de 1929 ?

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  • Patrick Bisciari
  • Alain Durré

Abstract

[fre] La bulle Internet présente des similitudes avec la bulle financière de 1929, notamment des variations substantielles des cours en termes réels sur les marchés d’actions de New York, à la hausse puis à la baisse. Cet article propose une comparaison de certains aspects de ces deux épisodes. Il fait ainsi ressortir trois différences majeures dans le cas de la bulle Internet par rapport à celle de 1929. Premièrement, si la hausse des cours réels a duré plus longtemps et a, partant, été d’une ampleur plus importante, la correction subséquente a été bien moins impressionnante. Deuxièmement, l’effondrement des bénéfices réels par action a contribué à porter le rapport cours-bénéfice (P/E) à des sommets historiques. Troisièmement, le P/E a donné un signal plus précoce et plus intense de surévaluation exubérante et, quatre ans après le point haut atteint par le S&P 500, une surévaluation est toujours présente. . Classification JEL : G10, C32, C53 [eng] The Internet bubble, a remake of the 1929 bubble ? . The Internet bubble shows similarities with the 1929 financial bubble, among others substantial variations in the stock prices in real terms on the New York equity markets, first upwards then downwards. This article proposes a comparison of certain features of both episodes. Three major differences stand out in the case of the Internet bubble when compared to the 1929 bubble. First, the increase in the real stock prices lasted for a longer period and was thus more impressive in extent, but the subsequent correction was less pronounced. Second, the slump in real earnings per share contributed to bring the price earnings ratio (P/E) to historical peaks. Third, P/E gave an earlier and more intense signal of exuberant overvaluation and, four years after the S& P 500 has reached a peak, overvaluation is still present. . JEL classification : G10, C32, C53

Suggested Citation

  • Patrick Bisciari & Alain Durré, 2005. "La bulle « Internet », un remake de la bulle de 1929 ?," Revue d'Économie Financière, Programme National Persée, vol. 81(4), pages 157-169.
  • Handle: RePEc:prs:recofi:ecofi_0987-3368_2005_num_81_4_4017
    DOI: 10.3406/ecofi.2005.4017
    Note: DOI:10.3406/ecofi.2005.4017
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    1. Patrick BISCIARI & Alain DURRE & Alain NYSSENS, 2003. "Stock Market Valuation In The United States," Finance 0312011, University Library of Munich, Germany.
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    More about this item

    JEL classification:

    • G10 - Financial Economics - - General Financial Markets - - - General (includes Measurement and Data)
    • C32 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes; State Space Models
    • C53 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Forecasting and Prediction Models; Simulation Methods
    • G10 - Financial Economics - - General Financial Markets - - - General (includes Measurement and Data)
    • C32 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes; State Space Models
    • C53 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Forecasting and Prediction Models; Simulation Methods

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