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Can Optimism about Technology Stocks Be Good for Welfare? Positive Spillovers vs. Equity Market Losses

  • Katrin Tinn
  • Evangelia Vourvachaki

This paper analyzes the impact of equity market information imperfections on R&D driven growth. The mechanism proposed is built on two premises. First, the R&D-sector relies largely on equity finance, because of its production features. Second, equity can be persistently mispriced. This is due to investors rationally taking into account both private and public information. This paper shows that optimism in equity market can generate long-run consumption gains, despite the excess capital losses realized in the short-run. This result arises from the externalities in R&D production that result in uderinvestment in R&D in a market economy with perfect information.

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Paper provided by The Center for Economic Research and Graduate Education - Economics Institute, Prague in its series CERGE-EI Working Papers with number wp383.

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Date of creation: Apr 2009
Date of revision:
Handle: RePEc:cer:papers:wp383
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  1. Colin Mayer & Wendy Carlin, 1999. "Finance, Investment and Growth," Economics Series Working Papers 1999-FE-09, University of Oxford, Department of Economics.
  2. Culter, D.M. & Poterba, J.M. & Summers, L.H., 1990. "Speculative Dynamics," Working papers 544, Massachusetts Institute of Technology (MIT), Department of Economics.
  3. Evangelia Vourvachaki, 2006. "Information and Communication Technologies in a Multi-Sector Endogenous Growth Model," CEP Discussion Papers dp0750, Centre for Economic Performance, LSE.
  4. Diego Comin & Mark Gertler, 2003. "Medium Term Business Cycles," NBER Working Papers 10003, National Bureau of Economic Research, Inc.
  5. Katrin Tinn, 2010. "Technology Adoption with Exit in Imperfectly Informed Equity Markets," American Economic Review, American Economic Association, vol. 100(3), pages 925-57, June.
  6. Franklin Allen & Stephen Morris & Hyun Song Shin, 2006. "Beauty Contests and Iterated Expectations in Asset Markets," Review of Financial Studies, Society for Financial Studies, vol. 19(3), pages 719-752.
  7. Chan, Louis K C & Jegadeesh, Narasimhan & Lakonishok, Josef, 1996. " Momentum Strategies," Journal of Finance, American Finance Association, vol. 51(5), pages 1681-1713, December.
  8. Ricardo Caballero & Emmanuel Farhi & Mohamad L. Hammour, 2004. "Speculative Growth: Hints from the US Economy," NBER Working Papers 10518, National Bureau of Economic Research, Inc.
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