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Can overpricing of technology stocks be good for welfare? Positive spillovers vs. equity market losses

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  • Tinn, K
  • Vourvachaki, E

Abstract

This paper examines the real impact of booms-and-busts of equity prices of technology-intensive firms, such as the late 1990s episode. We emphasize that what makes such episodes different from booms-and-busts related to other assets is the presence of knowledge spillovers. Such spillovers imply underinvestment in R&D at the aggregate level. Therefore, when temporarily high equity prices create incentives to invest more in R&D there are permanent wage and productivity gains. Sufficient conditions for these gains to always offset the direct negative effects from losses of equity trading and firm-level overinvestment are that overpricing is small and lasts longer.

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  • Tinn, K & Vourvachaki, E, 2012. "Can overpricing of technology stocks be good for welfare? Positive spillovers vs. equity market losses," Working Papers 12192, Imperial College, London, Imperial College Business School.
    • Handle: RePEc:imp:wpaper:12192
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