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Wettbewerb bei unvollständiger Information: Informationsaustausch oder stillschweigende Kollusion?

  • Stadler, Manfred
  • Hornig, Stephan O.

Der Beitrag sollte verdeutlichen, dass sich seit den Pioniermodellen mit unvollständiger Information mittlerweile eine recht heterogene Klasse von Ansätzen etabliert hat, die sich unter alternativen Grundannahmen mit der Frage auseinandersetzen, ob Unternehmen angesichts diverser Unsicherheiten auf ihren Märkten einen Anreiz besitzen, ihre privaten Informationen mit Konkurrenten zu teilen (Informationsaustausch) oder diese für sich zu behalten (stillschweigende Kollusion). Auf der Basis der bestehenden Literatur demonstrierte der vorliegende Beitrag ausgehend von einem Referenzmodell mit vollständiger Information die einfachst mögliche Modellierung unvollständiger Kosten- und Nachfrageinformation, mit der sich die Frage des Informationsaustausches zwischen Unternehmen in oligopolistischen Marktstrukturen modelltheoretisch erfassen lässt. Er liefert eine einleuchtende Erklärung für das immer wieder festzustellende Phänomen, dass die Unternehmen einer Branche zwar ihre jeweiligen Informationen über die Nachfragesituation bereitwillig den Konkurrenten zur Verfügung stellen, jedoch keinerlei Informationen über die verwendete Produktionstechnologie preisgeben. Die optimale Informationspolitik eines erfolgreichen Unternehmens obliegt folglich der Kunst zu wissen, worüber man spricht und worüber man besser schweigt.

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Paper provided by University of Tübingen, School of Business and Economics in its series Tübinger Diskussionsbeiträge with number 177.

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Date of creation: 2000
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Handle: RePEc:zbw:tuedps:177
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  1. Fried, Dov, 1984. "Incentives for Information Production and Disclosure in a Duopolistic Environment," The Quarterly Journal of Economics, MIT Press, vol. 99(2), pages 367-81, May.
  2. Li, Lode & McKelvey, Richard D. & Page, Talbot, 1987. "Optimal research for cournot oligopolists," Journal of Economic Theory, Elsevier, vol. 42(1), pages 140-166, June.
  3. Bulow, Jeremy I & Geanakoplos, John D & Klemperer, Paul D, 1985. "Multimarket Oligopoly: Strategic Substitutes and Complements," Journal of Political Economy, University of Chicago Press, vol. 93(3), pages 488-511, June.
  4. Gal-Or, Esther, 1985. "Information Sharing in Oligopoly," Econometrica, Econometric Society, vol. 53(2), pages 329-43, March.
  5. Hornig, Stephan O., 1999. "Informationsaustausch und trotzdem Wettbewerb? Unternehmensverhalten bei Nachfrageunsicherheit," Tübinger Diskussionsbeiträge 160, University of Tübingen, School of Business and Economics.
  6. Hviid, Morten, 1989. "Risk-Averse Duopolists and Voluntary Information Transmission," Journal of Industrial Economics, Wiley Blackwell, vol. 38(1), pages 49-64, September.
  7. Vives, Xavier, 1984. "Duopoly information equilibrium: Cournot and bertrand," Journal of Economic Theory, Elsevier, vol. 34(1), pages 71-94, October.
  8. Raith, Michael, 1996. "A General Model of Information Sharing in Oligopoly," Journal of Economic Theory, Elsevier, vol. 71(1), pages 260-288, October.
  9. Yasuhiro Sakai & Akihiko Yoshizumi, 1991. "The impact of risk aversion on information transmission between firms," Journal of Economics, Springer, vol. 53(1), pages 51-73, February.
  10. Shapiro, Carl, 1986. "Exchange of Cost Information in Oligopoly," Review of Economic Studies, Wiley Blackwell, vol. 53(3), pages 433-46, July.
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